US20020096910A1 - Tonneau cover end plate securing mechanism having a radial engaging surface - Google Patents
Tonneau cover end plate securing mechanism having a radial engaging surface Download PDFInfo
- Publication number
- US20020096910A1 US20020096910A1 US09/930,680 US93068001A US2002096910A1 US 20020096910 A1 US20020096910 A1 US 20020096910A1 US 93068001 A US93068001 A US 93068001A US 2002096910 A1 US2002096910 A1 US 2002096910A1
- Authority
- US
- United States
- Prior art keywords
- end plate
- locking member
- tonneau cover
- fixed stretching
- engagement member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J7/00—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs
- B60J7/08—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of non-sliding type, i.e. movable or removable roofs or panels, e.g. let-down tops or roofs capable of being easily detached or of assuming a collapsed or inoperative position
- B60J7/10—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of non-sliding type, i.e. movable or removable roofs or panels, e.g. let-down tops or roofs capable of being easily detached or of assuming a collapsed or inoperative position readily detachable, e.g. tarpaulins with frames, or fastenings for tarpaulins
- B60J7/102—Readily detachable tarpaulins, e.g. for utility vehicles; Frames therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J7/00—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs
- B60J7/08—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of non-sliding type, i.e. movable or removable roofs or panels, e.g. let-down tops or roofs capable of being easily detached or of assuming a collapsed or inoperative position
- B60J7/10—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of non-sliding type, i.e. movable or removable roofs or panels, e.g. let-down tops or roofs capable of being easily detached or of assuming a collapsed or inoperative position readily detachable, e.g. tarpaulins with frames, or fastenings for tarpaulins
- B60J7/102—Readily detachable tarpaulins, e.g. for utility vehicles; Frames therefor
- B60J7/104—Fastening means for tarpaulins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P7/00—Securing or covering of load on vehicles
- B60P7/02—Covering of load
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P7/00—Securing or covering of load on vehicles
- B60P7/02—Covering of load
- B60P7/04—Covering of load by tarpaulins or like flexible members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/02—Platforms; Open load compartments
- B62D33/023—Sideboard or tailgate structures
- B62D33/027—Sideboard or tailgate structures movable
- B62D33/0273—Movable tailboards for vehicles comprising non-movable sideboards, e.g. pick-up trucks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S135/00—Tent, canopy, umbrella, or cane
- Y10S135/907—Cover stretcher
Definitions
- Tonneau Covers particularly Tonneau Covers including a flexible cover and an apparatus for attaching the flexible cover to a cargo box of a pick up truck;
- the apparatus includes a rear bar or end plate and end plate engagement members cooperating to impart tension to the flexible cover when the end plate pivots into or is positioned in a closed position with respect to the end plate engagement members; and, preferably a locking member or members preventing unauthorized detachment of the end plate from the end plate engagement members.
- covers for preventing rain, debris and wind from damaging or disrupting the contents of a pickup truck bed are currently available.
- the covers are made of some sort of fabric, often coated with a polymeric material, which is detachably fastenable to a rigid frame so as to enclose and protect a given area.
- the covering materials used are generally stretchable to the extent that once they are in a position, they are pulled taut and then attached to the frame by numerous methods such as snaps, grommets, or hook-and-loop fasteners and stretcher bars.
- an edge portion of a covering fabric is attached to a generally L-shaped end plate or stretcher bar.
- the end plate is provided with a peak or crest, which pivotally contacts ends of the frame structure as the end plate is rotated into a fixed, stretching position.
- an enlarged ridge of the end plate is either captured by a spring loaded lock element as depicted in a first embodiment, or engages and deflects a biased pawl element as depicted in a second embodiment. After the enlarged ridge passes the lock or pawl element, the lock or pawl element springs back to it's undeflected state thereby maintaining the end plate in the fixed, stretching position.
- the biasing force of the lock or the pawl element In order to move the end plate out of the fixed stretching position, the biasing force of the lock or the pawl element must be overcome. In the first embodiment, this biasing force may be overcome by the movement of the enlarged ridge as the end plate is pivoted out of the fixed stretching position. In the second embodiment, deflection of the pawl is best accomplished by manipulating a release member which projects from a portion of a latching member, or by opening the tailgate and manually disengaging the pawl from the enlarged ridge.
- Schmeichel patents teach a number of significant improvements over the prior art, there are several limitations of the prior art, which are addressed and improved upon by the present invention.
- the lock element comprises a pawl element, which is attached to one end of an elongated leaf spring.
- the other end of the leaf spring is attached to a connector, which in turn is connected to a side rail of the support frame structure. While this embodiment functions to lock the end plate and support frame structure in the fixed stretching position, it would appear that absent support, the pawl element may be forcibly disengaged and/or damaged by forcible movement of the end plate out of the fixed, stretching position.
- a limitation common to both the first and second embodiments of the Schmeichel et al. patents regards the attachment point and the design of the engagement member (or strike) which engages the end plate.
- the strike is attached to the frame structure by a fastening element located a substantial distance from the inclined portion of the strike. This allows the strike to be flexed or bent upwardly in reaction to the stress forces exerted on the strike when the end plate is pivoted into and out of the fixed stretching position. Repeated flexure and/or bending may result in loosening and/or premature failure of the strike.
- strike includes a relatively thin lip portion which extends beyond the body of the strike and which rotatingly contacts the end plate as it is pivoted into and out of the fixed stretching position.
- This lip portion is subject to high amounts of stress and is subject to flexure and/or bending which may lead to premature failure.
- Schmeichel et al. Another limitation common to both the first and second embodiments of the Schmeichel et al. patents is in the attachment of the support frame about the perimeter of a cargo box of the vehicle.
- a support frame is attached to an inner side-wall by a C-shaped clamp.
- the effectiveness of the clamp may, however, become compromised by overtightening the clamping bolt and may lead to deformation and/or failure the body of the clamp.
- due to the tapered vertical attachment portion of the frame support there is a tendency for the clamp to become dislodged from the clamping position.
- the present invention relates to a tonneau cover apparatus for attaching and locking a flexible cover about a cargo box of a vehicle such as a pickup truck.
- the apparatus preferably includes a support frame, which is removably attached about the perimeter of the cargo box of the vehicle.
- the flexible cover is attached both to the support frame and to an end plate.
- the end plate is configured to pivotally engage an end plate engagement member, preferably two end plate engagement members, which are attached to the support frame. As the end plate pivots about the end plate engagement member to a fixed stretching position, the flexible cover is suitably stretched or tensed.
- An object of the present invention is to improve the attachment of the support frame to an inner side-wall of a vehicle.
- Another object of the present invention is to reduce the risk of over tightening in an attachment clamp.
- Another object of the present invention is to maximize and simplify securement of the end plate engagement member to the support frame.
- Yet another object of the present invention is to reduce areas of high stress concentrations in the end plate engagement member.
- Another object of the present invention is to minimize deflection of the engagement portion of the latching member in response to force exerted by the end plate.
- Yet another object of the present invention is to provide a superior side bar securing clamp which withstands the normal stresses associated with securing the support frame to side walls of the pickup truck.
- Still another object of the present invention is to reduce inadvertent and/or unauthorized disengagement of a flexible cover from a cargo box of a vehicle.
- FIG. 1 is a partially broken away perspective view of a preferred embodiment of a tonneau cover apparatus 8 of the present application, including a flexible cover 10 in accordance with the present invention, attached to a pickup truck 6 (shown in broken lines) with the cover 10 being disposed in a covered or fixed stretching position;
- FIG. 5 is a simplified fragmentary perspective view of a side rail 106 of the preferred apparatus, partially shown in FIG. 3, with the latch member attached;
- FIG. 6 is an enlarged perspective view of the locking member 60 of the preferred apparatus, which illustrates the position of the locking finger and the location of the frictional elements;
- FIG. 7 is an enlarged fragmentary perspective view of the locking member 60 as it is being inserted into a channel 38 in the end plate 20 and illustrates the interaction between the end plate channel 38 and the frictional imparting element 74 and the guide strips 80 (not shown) and 82 ;
- FIG. 9 is an enlarged fragmentary sectional view of the latching member illustrating the range of motion as the release member 196 is depressed from the position shown in phantom so that the end plate 20 (not shown) can be disengaged from the end plate engagement member 170 (not shown) and showing the adjustability of the latching member relative to the inwardly extending flange 118 of the side rail;
- FIG. 13 is an enlarged fragmentary sectional view of a further alternate embodiment of the present tonneau cover apparatus, showing only a very small portion of an alternate pickup truck 506 in phantom, and showing the end plate 520 in a fixed stretching position;
- FIG. 15 is a fragmentary sectional view of the further embodiment shown in FIG. 13 as generally seen from line 15 - 15 of FIG. 13 showing the side rail 606 clamped to the sidewall 512 of the pickup truck 506 and showing the locking member 560 in a locking position where the finger portion 568 of the locking member 560 is engaged with an inwardly extending flange 618 of the side rail 606 to hold the end plate 520 in the fixed stretching position;
- FIG. 16 is a fragmentary section view similar to that shown in FIG. 8, but of a portion of yet another alternate embodiment which is the same as the preferred embodiment shown in FIG. 8 except that there is no latch member and the locking member 760 , while it is similar to the locking member 60 shown in FIG. 8, is shown in a disengaged position where the locking member 760 is in contact with the inwardly extending flange 818 , furthermore, the locking member 760 does not have guide strips or a friction imparting element as disclosed in association with locking member 60 and locking member 760 slides easily within channel 738 which is the same as channel 38 in end plate 20 of the preferred embodiment shown in FIG. 8; the locking member 760 differing from locking member 60 also because it is secured within the end plate 720 with a tension spring 774 which biases the locking member 760 toward a position consistent with a latched or locked position shown in FIG. 17;
- FIG. 1 illustrates a flexible cover 10 in use on a cargo box 1 1 of a pickup truck 6 having two outer sidewalls 12 , each having an inner sidewall 14 (shown in FIG.
- FIG. 2 shows the preferred tonneau cover apparatus 8 , including the flexible, stretchable fabric cover 10 , separated from the pickup truck.
- the rearward end of the flexible cover is attached to an elongated end plate 20 having an end plate cap 90 with an exterior surface 92 .
- the other end of the flexible cover 10 is preferably attached to the front plate 19 (shown in FIG. 1) in a manner similar to that disclosed in U.S. Pat. No. 5,906,407 to Schmeichel ('407 patent), the disclosure of which is hereby incorporated herein by reference.
- the front plate 19 is preferably secured to the respective side rails 106 in an equivalent or similar manner that is disclosed in U.S. Pat. No.
- the flexible cover 10 is preferably made of a resilient fabric material, which is preferably laminated to a polyester sheet to give it strength, flexibility, additional resilience, and water resistance.
- the preferred tonneau cover apparatus 8 is secured to the sidewalls 12 of the pickup truck 6 using clamps 130 (see FIGS. 3 and 8), which secure the respective side rails 106 to the inner wall 14 , which is an extension of the sidewall 12 .
- the front plate 19 is secured to the respective side rails 106 as described above and the end plate 20 is engaged to a pair of end plate engagement members 170 (see FIGS. 3 and 5). When the end plate 20 is engaged it will initially occupy a position with respect to the respective engagement members 170 similar to that shown in phantom in FIG. 3.
- the distal end 32 of the end plate 20 is then pushed downward and the peak or crest 26 of the proximate end 20 will then pivot against the pivot point 176 of the respective engagement member 170 such that the foot 30 of the end plate 20 will push the pawl element 200 of the latch member 190 downward and out of its path, so that the end plate 20 can become fully engaged within the respective engagement members 170 and the foot 30 becomes fully engaged within the inclined portion 178 (see FIG. 5) of the engagement member 170 , as shown in FIG. 3.
- the end plate 20 is in a closed or a fixed stretching position, where the end plate 20 preferably exerts a tensile force upon the flexible cover 10 so that the flexible cover 10 will stretch and remain taught over the cargo box 11 .
- locking members 60 can be pushed into a closed or locking position to prevent the end plate 20 from being disengaged from the respective engagement members 170 .
- the locking members 60 slide, when pushed, within a second channel 38 in the end plate 20 . Because locking members 60 are designed to create friction when moved within the second channel 38 , it takes some force to move the locking members 60 into a locking position like that shown in phantom in FIG. 8. This requirement for force to slide the locking members is designed to prevent the locking members from accidentally sliding into such a position when they are meant to be disengaged, and from sliding into an unlocked or disengaged position similar to that shown in FIG. 8 when they are meant to be in the fully engaged or locked position shown in phantom in FIG. 8.
- the end plate 20 is disengaged from a pawl element 200 on a latching member 190 and a locking member 60 is disengaged from a raised longitudinal portion 118 of a side rail 106 (shown in FIG. 8) prior to pivoting or rotating the end plate 20 about an end plate engagement member 170 and out of a fixed stretching position shown in FIG. 1.
- a generally rectangularly shaped end plate 20 is depicted in the drawings, it is understood that the end plate 20 may have other configurations without departing from the spirit and scope of the invention. Moreover, it is understood that only selected portions of the end plate 20 are necessary to normal operation and that unnecessary portions may be omitted, if desired.
- the end plate is made of an aluminum alloy material.
- FIGS. 2, 3, 5 and 8 - 10 also illustrate attachment of the flexible cover 10 to the support frame 104 .
- the support frame 104 preferably includes side rails 106 having a vertical attachment portion 108 including a sidewall contacting surface 110 , an inwardly extending portion 114 , and an inclined portion 116 onto which one half of a two part, hook and loop type fastener 124 has been attached.
- the flexible cover 10 has been provided with the other half of the two part, hook and loop type fastener 124 to enable the sides of the flexible cover 10 to be removably attached to the inclined portion 116 of the side rail 106 .
- the strap 86 is attached to a locking member 60 rather than a portion of the end plate itself. It will be appreciated that this strap might be just as effective if it were attached directly to the end plate (not shown) in other embodiments and that it need not be attached to the locking members 60 .
- the flexible cover material can be secured in such a way that additional material creates a flap 123 which covers the top of the tailgate 16 and provides a further seal or covering to limit the passage of dust and moisture into the cargo box 11 .
- FIGS. 3 and 10 illustrate the apparatus as it pivots or rotates position into and out of a fixed stretching position and when in the fixed stretching position.
- end plate 20 includes a distal end 32 , which terminates in a first channel 36 , which receives an end of the flexible cover 10 .
- the end plate 20 also includes a second channel 38 , which is sized to slidingly receive a locking member 60 .
- the second channel 38 is generally T-shaped and includes opposing sidewalls 40 , 42 an upper wall 44 and opposing flanges 46 , 48 .
- the end plate or stretcher bar 20 also includes cavities, which are sized to receive plugs 94 , 96 that extend from an end plate cap 90 .
- the plugs 94 , 96 are provided with ribs 98 , 100 which allow the end plate cap 90 to be frictionally attached to the end plate 20 .
- a peak or crest 26 of the end plate 20 contacts a pivot point 176 of an end plate engagement member, or strike 170 .
- a ridge 28 on the base portion 24 of the end plate 20 then sweeps an upper surface 182 of an extension portion 174 of the end plate engagement member 170 .
- the ridge 28 then contacts and deflects the pawl element 200 of the engagement portion 194 of a latching member 190 .
- the latching member 190 is deflected from a first position where the end plate is prevented from being disengaged from the fixed stretching position to a second position, which permits the apparatus to be disengaged from the fixed stretching position.
- the ridge 28 passes the pawl element 200 .
- the base portion 24 is moved into a base portion receiving area 180 in the end plate engagement member 170
- the latching member 190 moves from the second position to the first position wherein the pawl element 200 of the latching member 190 is biased into a pawl receiving area 50 of the end plate where it confronts a foot 30 on the end plate 20 .
- the pawl element 200 may be disengaged from the foot 30 and withdrawn from the pawl receiving area 50 by placing downward pressure on a release member 196 or pulling downward on a grip element 236 .
- the latching member 190 has a body portion 192 , an engagement portion 194 , a release member 196 and an attachment portion 198 .
- the engagement portion 198 includes a pawl element 200 having a ridge engagement surface 202 and a foot engagement surface 204 . Adjacent the foot engagement surface 204 is a recess or relief 206 which accommodates a fastening element 186 used to attach the end plate engagement member or strike 170 to the support frame 104 (see FIG. 3).
- the angle “A” between the foot engagement surface 204 and a top surface 207 of the recess 206 of the body portion 192 is preferably less than or equal to 90 degrees, preferably less than 90 degrees and preferably around 88 degrees to prevent the end plate 20 from being forced out of the fixed stretching position when lifting force is applied upwardly upon the bottom of end plate 20 when it is in the fixed stretching position as shown in FIG. 3.
- the upper surface 212 of the latch member 20 is generally parallel with the top surface 207 of the recess 206 , so the angle “A” will be the same as an angle (not shown) between the foot engagement surface 204 and the upper surface 212 of the latch member 190 .
- the latching member 190 includes a release member 196 , which is preferably an upright member 208 with an enlarged head 210 .
- the release member 196 is manipulated by placing downward pressure on the enlarged head 210 of the release member 196 through the flexible cover 10 and is used to disengage the pawl element 200 from the foot 30 of the end plate 20 .
- an upwardly extending recess 214 having a throat portion 216 , partially delineates or separates the attachment portion 198 from the body portion 192 .
- the attachment portion 198 is connected to the body portion 192 by a thinned portion 218 .
- the attachment portion 198 includes a slot 226 , which receives a fastener 220 and a threaded aperture 228 , which receives an adjustment member or element 230 .
- the attachment portion 198 also includes a limiter or stop 232 , which controls the range of motion of the latching member 190 as it moves from the first position to the second position.
- the upper and lower surfaces 198 a, the attachment portion 198 that are parallel to broken line 198 c (shown schematically in FIG. 4), reside at an angle, B, with respect to upper and lower surfaces 192 a, 192 b of the body portion 192 , respectively, when the latch member 190 is disengaged from the side rail 106 .
- This angle “B” is preferably about 1 to about 7, more preferably about 3 to about 5, more preferably about 4 degrees and ensures that the upper surface 212 of the latching member 190 biasingly contacts an inwardly extending flange 118 on a side rail 106 when the latching member 190 is attached thereto as shown in FIGS. 3 and 5.
- the latching member 190 is preferably manufactured from a glass filled nylon resin material.
- the body portion 172 of the end plate engagement member 170 includes an integrally attached fastening element 186 , a portion of which extends beyond the body portion 172 and through an aperture 126 in the flange 118 and which is secured by an appropriately sized nut 127 .
- the end plate engagement member 170 is formed so that the lower surface 184 is slightly concave. This allows the extension portion 174 to biasingly contact the upper surface 120 of the flange 118 when the end plate engagement member 170 is attached thereto.
- the end plate engagement member 170 is preferably manufactured from a glass filled nylon resin material.
- FIG. 6 illustrates a locking member 60 in isolation prior to use.
- the locking member 60 generally comprises an upper portion 62 , a lower portion 64 and a web 66 therebetween.
- the upper portion 62 includes a top surface 72 onto which a friction-imparting element 74 has been affixed.
- the term friction-imparting element in the context of this invention is understood to mean a material, which is capable of causing friction between the locking member 60 and the end plate 20 when the locking member is moved within the end plate.
- the preferred friction imparting element 74 in this instance is a loop portion of a hook and loop type fastening element.
- the upper portion 62 also includes opposing side surfaces 76 , 78 and corresponding opposite guide strips 80 , 82 .
- guide strip in the context of this invention is understood to mean a structure, which is preferably relatively rigid in comparison to the friction-imparting element, although it need not be so.
- the preferred guide strip in this instance is composed of the same material as the locking member.
- the upper portion 62 has the same general cross-sectional T-shape as the channel 38 into which it is inserted. While a T-shape is illustrated, it is understood that the channel 38 and upper portion 62 may be formed in other complimentary configurations without departing from the spirit and scope of the invention.
- one end of the lower portion includes a finger 68 , which extends beyond the body of the lower portion 64 .
- the finger portion 68 includes an engagement surface 70 , which is configured to slidingly engage the flange 118 of a side rail 106 (see FIG. 8).
- the lower portion 64 is also provided with a slot 84 through which a strap 86 may be threaded, the strap 86 serving to position and align the base portion 24 of the end plate 20 adjacent the end plate engagement member or strike 170 prior to pivoting the end plate into the fixed stretching position shown in FIGS. 1 and 3.
- FIG. 7 illustrates a locking member 60 as it is being installed into a channel 38 of an end plate 20 .
- the friction-imparting element 74 is compressed and comes into sliding contact with the upper surface 44 of the channel 38 (see FIG. 3).
- the guide strips 80 , 82 are engaged by sidewalls 42 , 40 of channel 38 (see also FIG. 3).
- the sidewalls 42 , 40 being constructed of relatively harder material, modify the opposite guide strips as the locking member is inserted into the channel 38 .
- a portion 83 of the opposite guide strips are planed away or shaved during assembly.
- the width of the upper portion 62 and attendant guide strips 80 , 82 is then sized to friction fit within the width of the channel 38 .
- the resin material of the preferred locking member 60 and the aluminum alloy of the preferred end plate both contract, but the locking member 60 will contract somewhat more than the end plate 20 .
- both the preferred locking member 60 , made of resin material, and the preferred end plate 20 made of aluminum alloy, will expand, but it is believed that the expansion of the aluminum alloy will be greater.
- the preferred locking member 60 and the preferred end plate 20 will contract or expand at different rates and this will cause some looseness of the sliding locking member 60 within the end plate 20 .
- the use of the friction-imparting element 74 is intended to compensate for this variation and to prevent the locking member 60 from sliding into a locked position when it has been placed, and is intended to remain in, an open position.
- the friction imparting element 74 and the guide strips 80 , 82 are all in sliding contact with the walls 44 , 42 , 40 , respectively, while the remaining surfaces of the upper portion 66 are in sliding contact with flanges 46 , 48 of the second channel 38 .
- These sliding contacts combine to provide a relatively constant resistive force over a wide range of temperatures as the locking element is manipulated along the channel. While the preferred embodiment features one friction imparting element and a plurality of guide strips elements, it is understood that other combinations may be used.
- the locking member 60 is preferably manufactured from a glass filled nylon resin material.
- FIG. 8 illustrates a portion of the apparatus attached to an inner sidewall 14 of the pickup truck. More specifically, a side rail 106 of the support frame is attached to the inner sidewall 14 preferably by a plurality of clamps 130 .
- the clamp 130 has a first arm 132 and a second arm 150 . As illustrated, the first arm 132 and the second arm 150 engage each other at contact surfaces 139 and 157 , respectively.
- the contact surfaces 139 and 157 serve several different functions. First, the contact surfaces 139 and 157 provide a point about which the arms 132 and 150 may pivot with respect to each other.
- the contact surfaces 139 and 157 serve to align and guide the arms 132 and 150 so that they are brought into confronting relation with each other when the clamp 130 is tightened.
- the first arm 132 includes a proximal end 134 , a transition portion 136 and a distal end 138 .
- the proximal end 134 includes a contact surface 139 having a recess 140 , which is configured to receive and rotatingly support a pivot or projection 158 on the second arm 150 .
- the preferred configuration of the recess 140 is generally oriented orthogonally to the longitudinal axis of the arm 132 .
- the proximal end 134 also includes a transversely aligned cavity 144 , which is coaxially aligned with an aperture 166 in a nut 167 .
- the cavity 144 is sized to securely retain the nut 167 of a fastening element 169 , which includes nut 167 and bolt 164 .
- the cavity 144 is sized to loosely receive the shaft of a bolt 164 of the fastening element 169 .
- the aperture 166 is sized to fit the bolt 164 , the cavity is much larger which allows the clamp to fall open easily at the end nearest the distal end 138 and distal non-parallel side joint between two surfaces similar to that shown in FIG. 8.
- the distal end 138 of the first arm 132 includes a sidewall-contacting portion 148 , which is preferably provided with a grip element 148 .
- the grip element 148 has an irregular shaped surface and may be suitably affixed to the sidewall-contacting portion 146 .
- the preferred grip element 148 has an irregular surface similar to course sandpaper and the preferred method of affixing is by using an adhesive.
- the second arm 150 includes a proximal end 152 , a transition portion 154 and a distal end 156 .
- the proximal end includes a contact surface 157 having a pivot or projection 158 , which is configured to be rotatingly supported within a recess 140 in the proximal end 134 of the first arm 132 .
- the preferred configuration of the projection is generally oriented orthogonally to the longitudinal axis of the arm 150 .
- the proximal end 152 of the second arm also includes a transversely aligned cavity 145 , which is sized to loosely receive the shaft of a bolt 164 of the fastening element 169 .
- the distal end 156 includes a side rail-contacting portion 162 . As depicted, the siderail-contacting portion 162 is configured to mesh with a similarly configured surface on a vertical attachment portion 108 of a side rail 106 .
- the respective side rail and sidewall contact portions 146 , 162 can pass through a range of non-parallel orientations with respect to one another especially enabling the clamp 130 to forcibly held together a pair of relatively flat objects whose opposite surfaces when joined together present non parallel surfaces.
- a side rail 106 is brought into contact with an inner sidewall 14 of a truck 6 .
- a clamp 130 is then positioned so that it straddles the inner sidewall 14 and the side rail 106 .
- the fastening element is then snugged up so that the distal ends 138 and 156 contact the sidewall 14 and side rail 106 , respectively.
- the fastening element is then manipulated to gradually increase the clamping force. As the force is increased several things occur. First, the arms 132 and 150 are aligned and guided by the cooperative interaction of the contact surfaces 139 and 157 .
- limiter surfaces 142 and 160 on the first and second arms 132 , 150 , respectively, converge towards each other, and third, the arms 132 , 150 flex slightly, at the transition portions 136 , 154 , respectively, where they have some give due to the materials used to make them and the design of respective first and second arms 132 , 150 which include the narrower transition portions 136 , 154 , respectively.
- the limiter surfaces 142 and 160 contact each other, attachment of the side rail 106 to an inner sidewall 14 is essentially completed. This is because the clamp may not be easily over tightened. With this preferred embodiment, not only is possibility overtightening substantially reduced, but the clamp 130 provides a relatively constant clamping force, which compensates for differences in thickness of the material to be clamped together and also differences in attachment points.
- FIG. 8 also illustrates the operation of the locking member 60 as it may be manipulated between a first position where it operatively connects an end plate 20 to a side rail 106 of a support frame 104 (shown in phantom lines) and a second position where the locking member 60 is disengaged from the side rail 106 of the support frame 104 . Note in the first position, that engagement surface 70 of the finger portion 68 engages the lower surface 122 of the side rail flange 118 .
- FIG. 9 illustrates in broken line a position of the latching member 190 at the point where either the release member 196 has been manipulated by placing a downward force upon it, or by pulling downward on the body portion 192 or the chord 236 secured to the far end of body portion 192 and the pawl element 200 (see FIG. 4) has been disengaged from the pawl element receiving area 50 of the end plate 20 (see FIG. 3). That is, the latching member 190 has been moved to the second position. Note that the throat portion 216 has been effectively closed and the body portion 192 is in contact with the limiter 232 .
- the release member 196 As the release member 196 is manipulated, it is contained within or encircled by an appropriately over-sized opening 128 in the inwardly extending flange 118 of a side rail 106 .
- the latching member 190 is attached to the flange 118 by a fastening element 219 , such as a bolt 220 and attendant washer 222 and nut 224 .
- the bolt 220 is inserted through an appropriately sized aperture 126 and through the latching member 190 , after which it is secured with a washer 222 and nut 224 .
- the latching member 190 may be adjusted relative to the flange 118 and bolt 220 by the provision of a somewhat oversized slot 226 , which slidingly admits the shaft of a bolt 220 of the fastening element 219 . Positioning of the shaft of the bolt 220 within the slot 226 may be achieved by manipulating an adjustment bolt 230 , which is threadably received in a threaded aperture 228 within the attachment portion 198 of the latch member 190 .
- an end plate 20 is shown in the fixed stretching position in which the pawl element 200 (see FIGS. 3 and 5) of the latching member 190 projects through the flange 118 of a side rail 106 and into the pawl receiving area 50 of the end plate 20 .
- the locking member 60 has been manipulated or moved to the second position so that it lies inboard of the flange 118 . In this position, the finger 68 does not operatively connect the end plate 20 to the support frame.
- the strap 86 has one end, which is attached to the locking member 60 , and another end which is attached to a mid bar or bow 250 . Such an arrangement serves to guide the peak/crest 26 of the end plate 20 into operative contact with the pivot point 176 of the end plate engagement member 170 prior to rotating the end plate 20 into the fixed stretching position.
- FIGS. 11 and 12 a further embodiment of the tonneau cover apparatus 408 is depicted.
- This embodiment differs from the preferred embodiment in that an end plate 420 is provided with generally radially shaped base portion 422 and the end plate engagement member 440 is provided with a reciprocally similarly shaped base portion receiving area 442 so that the base portion 422 can slidably pivot within the base portion receiving area 442 when fully engaged therewith as shown in FIG. 11 where the end plate 420 has been lifted away from the fixed stretching position shown in FIG. 12 and the base portion 422 has pivoted within the receiving area 442 slightly away from the fixed, stretching position. As shown in phantom in FIG. 12, when the base portion 422 is pivoted further, it will come away from the base portion receiving area 442 , but not before it has slidingly pivoted somewhat within the receiving area 442 .
- the reciprocating radial base portion 422 and base portion receiving area 442 of the end plate engagement member 440 compliment each other so that the base portion 422 can pivot smoothly within the engagement member 440 through a limited but significant radius.
- the base portion 422 has pivoted far enough that the catch point 424 of the end plate 420 engagements the pivot point 444 of the engagement member 440 , the notch or dip 426 between the catch point 424 and the arcuate surface 428 of the base portion 422 will rotate or slide over the rounded surface 446 of the pivot point 444 , enabling the base portion 422 to disengage from the base portion receiving area 442 of the end plate engagement member 440 .
- the end plate 520 again has a radial base portion 522 that engages a reciprocating radial base portion receiving area 542 .
- the base portion 522 can slide smoothly within the base portion receiving area 542 in a manner similar to that disclosed with respect to the embodiment disclosed in FIGS. 11 and 12, but the arcuate catch point 424 and the arcuate surface 428 , in the embodiment disclosed in FIGS. 11 and 12, are replaced with a flat catch surface 524 .
- This surface joins to a portion of the radial surface 525 to form a notch or dip 526 at the junction thereof.
- the notch or dip 526 becomes engaged with the preferably round surface of the pivot point 676 of the engagement member 670 , the notch 526 will slide over or partially around the pivot point 676 , as the end plate 520 pivots further and the base portion 522 disengages from the radial base portion receiving area 542 .
- the alternate embodiment shown in FIGS. 13, 14 and 15 also includes a locking member 560 that engages an inward extending flange 618 of a side rail 606 in a manner similar to that disclosed in the preferred embodiment, except that the locking member 560 is configured differently and the finger portion 568 is configured somewhat differently.
- the locking member 560 is secured within a channel 538 by securing a bolt 539 to the locking member 560 with a nut 541 .
- the bolt 539 slides easily within the channel 538 to engage the inwardly extending flange 618 of the side rail 606 .
- the end plate 520 will have a pair of radial base portions 522 proximate the respective ends of the end plate 520 which are configured to reciprocally engage a pair of engagement members 670 secured to each of a pair of side rails 606 attached to respective sidewalls (not shown) of the pickup truck 506 .
- the other features of this alternate inventions are similar to or the equivalent to those features of the preferred embodiment disclosed in FIGS. 1 - 10 .
- FIGS. 16 and 17 yet another alternate embodiment of the present invention is disclosed in which the alternate embodiment differs from the preferred embodiment disclosed in FIGS. 1 - 10 , but providing an alternate locking member 760 which slides easily within a channel 738 similar to the second channel 38 of the preferred embodiment.
- the locking member 760 does not include the friction imparting elements or guide strips of the preferred embodiment.
- the alternate end plate 720 includes a tension spring 774 secured at each end of the elongated end plate 720 to bias each of two locking members toward a position consistent with a closed or locked position similar to that shown in FIG. 17.
- the beveled bottom surface 781 is no longer engaged with the upper side of the end 821 of the inwardly extending flange 818 , and the spring biased locking member will engage the flange 818 as shown in FIG. 17.
- the spring biased locking member 720 will slide to the same position shown in FIG. 17, because it will spring biased against the stop bolt 819 which is positioned within the end plate 720 such that the locking member 760 will stop against the stop bolt 819 is the same position it will occupy within the end plate 720 when the locking member 760 is biased up against the end 821 of the flange 818 .
- FIG. 18 Yet another alternate embodiment is shown in FIG. 18 where an embodiment like that shown in FIGS. 16 and 17 is shown, but which differs primarily only because the tension springs 774 of the embodiment shown in FIGS. 16 and 17 are replaced by compression springs 974 which pushes, rather than pulls the locking member 960 or members, if there are more than one, which there preferably are, against the flange 1018 and/or the stop bolt 1019 .
- the compression spring 974 slides over and is engaged by a first spring guide protrusion 977 extending away from the locking member 960 and a second spring guide protrusion 979 extending away from a spring stop 983 . All the other features of this embodiment are preferably the same as the features of the alternate embodiment shown in FIGS. 16 and 17 and this embodiment operates generally in the same way with the exception of the operation of the compression spring 974 as compared to the tension spring 774 .
Abstract
A tonneau cover apparatus for attaching a flexible cover about a cargo box of a vehicle, preferably a pickup truck. The apparatus preferably includes, a support frame removably attached about the perimeter of a cargo box of the vehicle, an elongated end plate attached to an end of the flexible cover and an end plate engagement member attached to the support frame, preferably one on each side of the support frame. The end plate is preferably attached to an end of the flexible cover and is configured to cooperatively engage and pivot with respect to the end plate engagement member and into and out of a fixed stretching position wherein the flexible cover can be correspondingly be tensed and relaxed. The end plate engagement member preferably has a radial receiving surface and the end plate has a radial engaging surface, which engages the radial receiving surface when the end plate pivots into the fixed stretching position.
Description
- The present application claims priority to co-pending U.S. Provisional Patent Application Serial No. 60/225,109 filed Aug. 14, 2000 and entitled TONNEAU COVER HAVING REAR BAR LOCK.
- The present invention relates to Tonneau Covers, particularly Tonneau Covers including a flexible cover and an apparatus for attaching the flexible cover to a cargo box of a pick up truck; the apparatus includes a rear bar or end plate and end plate engagement members cooperating to impart tension to the flexible cover when the end plate pivots into or is positioned in a closed position with respect to the end plate engagement members; and, preferably a locking member or members preventing unauthorized detachment of the end plate from the end plate engagement members.
- Numerous protective covers for preventing rain, debris and wind from damaging or disrupting the contents of a pickup truck bed are currently available. Generally, the covers are made of some sort of fabric, often coated with a polymeric material, which is detachably fastenable to a rigid frame so as to enclose and protect a given area. The covering materials used are generally stretchable to the extent that once they are in a position, they are pulled taut and then attached to the frame by numerous methods such as snaps, grommets, or hook-and-loop fasteners and stretcher bars.
- The use of hook-and-loop type fasteners and stretcher bars to fasten a cover to a frame structure forms the subject matter of U.S. Pat. Nos. 5,076,338 ('338 patent) and 5,174,353 ('353 patent) issued to Steven Schmeichel et al., the disclosures of which are incorporated herein by reference.
- In the Schmeichel et al. patents, an edge portion of a covering fabric is attached to a generally L-shaped end plate or stretcher bar. The end plate is provided with a peak or crest, which pivotally contacts ends of the frame structure as the end plate is rotated into a fixed, stretching position. As the end plate rotates into the fixed, stretching position, an enlarged ridge of the end plate is either captured by a spring loaded lock element as depicted in a first embodiment, or engages and deflects a biased pawl element as depicted in a second embodiment. After the enlarged ridge passes the lock or pawl element, the lock or pawl element springs back to it's undeflected state thereby maintaining the end plate in the fixed, stretching position. In order to move the end plate out of the fixed stretching position, the biasing force of the lock or the pawl element must be overcome. In the first embodiment, this biasing force may be overcome by the movement of the enlarged ridge as the end plate is pivoted out of the fixed stretching position. In the second embodiment, deflection of the pawl is best accomplished by manipulating a release member which projects from a portion of a latching member, or by opening the tailgate and manually disengaging the pawl from the enlarged ridge.
- Although the Schmeichel patents teach a number of significant improvements over the prior art, there are several limitations of the prior art, which are addressed and improved upon by the present invention.
- One limitation of the first embodiment of the Schmeichel et al. patents, as depicted, is that the L-shaped lock member, by virtue of it's resilient nature, merely imparts a dynamic force, which tends to maintain the end plate in the fixed stretching position. This force, however, can be overcome by the action of the enlarged ridge as it moves past the inclined portion of the L-shaped lock. Thus, the L-shaped lock does not function as a lock in a conventional sense.
- A limitation of the second embodiment of the Schmeichel et al. patents is in the location and construction of the lock element. As depicted, the lock element comprises a pawl element, which is attached to one end of an elongated leaf spring. The other end of the leaf spring is attached to a connector, which in turn is connected to a side rail of the support frame structure. While this embodiment functions to lock the end plate and support frame structure in the fixed stretching position, it would appear that absent support, the pawl element may be forcibly disengaged and/or damaged by forcible movement of the end plate out of the fixed, stretching position.
- Another limitation of the second embodiment of the Schmeichel et al. patents is that the end plate may be disengaged from the lock member by a person with knowledge of the location of the release member.
- A limitation common to both the first and second embodiments of the Schmeichel et al. patents regards the attachment point and the design of the engagement member (or strike) which engages the end plate. As depicted in the drawings the strike is attached to the frame structure by a fastening element located a substantial distance from the inclined portion of the strike. This allows the strike to be flexed or bent upwardly in reaction to the stress forces exerted on the strike when the end plate is pivoted into and out of the fixed stretching position. Repeated flexure and/or bending may result in loosening and/or premature failure of the strike. Additionally, strike includes a relatively thin lip portion which extends beyond the body of the strike and which rotatingly contacts the end plate as it is pivoted into and out of the fixed stretching position. This lip portion is subject to high amounts of stress and is subject to flexure and/or bending which may lead to premature failure.
- Another limitation common to both the first and second embodiments of the Schmeichel et al. patents is in the attachment of the support frame about the perimeter of a cargo box of the vehicle. In Schmeichel et al., a support frame is attached to an inner side-wall by a C-shaped clamp. The effectiveness of the clamp may, however, become compromised by overtightening the clamping bolt and may lead to deformation and/or failure the body of the clamp. Additionally, due to the tapered vertical attachment portion of the frame support, there is a tendency for the clamp to become dislodged from the clamping position.
- The present invention provides improvements which address these and other limitations associated with the prior art.
- The present invention relates to a tonneau cover apparatus for attaching and locking a flexible cover about a cargo box of a vehicle such as a pickup truck. The apparatus preferably includes a support frame, which is removably attached about the perimeter of the cargo box of the vehicle. The flexible cover is attached both to the support frame and to an end plate. The end plate is configured to pivotally engage an end plate engagement member, preferably two end plate engagement members, which are attached to the support frame. As the end plate pivots about the end plate engagement member to a fixed stretching position, the flexible cover is suitably stretched or tensed. The apparatus preferably includes, a support frame removably attached about the perimeter of a cargo box of the vehicle, an elongated end plate attached to an end of the flexible cover and an end plate engagement member attached to the support frame, preferably one on each side of the support frame. The end plate is preferably attached to an end of the flexible cover and is configured to cooperatively engage and pivot with respect to the end plate engagement member and into and out of a fixed stretching position wherein the flexible cover can be correspondingly be tensed and relaxed. The end plate engagement member preferably has a radial receiving surface and the end plate has a radial engaging surface, which slidingly engages the radial receiving surface when the end plate pivots into and out of the fixed stretching position.
- An object of the present invention is to improve the attachment of the support frame to an inner side-wall of a vehicle.
- Another object of the present invention is to reduce the risk of over tightening in an attachment clamp.
- Another object of the present invention is to maximize and simplify securement of the end plate engagement member to the support frame.
- Yet another object of the present invention is to reduce areas of high stress concentrations in the end plate engagement member.
- Still another object of the present invention is to lessen the exposure of the latching member relative to the support frame.
- Another object of the present invention is to minimize deflection of the engagement portion of the latching member in response to force exerted by the end plate.
- Yet another object of the present invention is to provide a superior side bar securing clamp which withstands the normal stresses associated with securing the support frame to side walls of the pickup truck.
- Still another object of the present invention is to reduce inadvertent and/or unauthorized disengagement of a flexible cover from a cargo box of a vehicle.
- These and various other advantages and features of novelty which characterize the present invention are pointed out with particularity in the claims annexed hereto and forming a part hereof. However, for a better understanding of the invention, its advantages and objects obtained by its use, reference should be made to the drawings which form a further part hereof, and to the accompanying descriptive matter, in which there is illustrated and described a preferred embodiment of the present invention.
- FIG. 1 is a partially broken away perspective view of a preferred embodiment of a
tonneau cover apparatus 8 of the present application, including aflexible cover 10 in accordance with the present invention, attached to a pickup truck 6 (shown in broken lines) with thecover 10 being disposed in a covered or fixed stretching position; - FIG. 2 is a fragmentary perspective view of the preferred
tonneau cover apparatus 8 shown in FIG. 1 (but separated from the pickup truck), illustrating the end plate and flexible cover after they have been rotated out of the covered or fixed stretching position shown in FIG. 1; - FIG. 3 is an enlarged fragmentary sectional view which illustrates (1) the preferred apparatus in the fixed stretching position, shown in FIG. 1, in which the end plate exerts a tensile force on the flexible cover, and (2) (in phantom lines) the preferred apparatus as it is unlatched and rotated out of the fixed stretching position in which the flexible cover is relatively loose or relaxed;
- FIG. 4 is an enlarged simplified side view of a
latch member 190 of the preferred apparatus, when disengaged from the apparatus partial or complete views of the latch member, or parts thereof, shown in situ in various; - FIG. 5 is a simplified fragmentary perspective view of a
side rail 106 of the preferred apparatus, partially shown in FIG. 3, with the latch member attached; - FIG. 6 is an enlarged perspective view of the
locking member 60 of the preferred apparatus, which illustrates the position of the locking finger and the location of the frictional elements; - FIG. 7 is an enlarged fragmentary perspective view of the
locking member 60 as it is being inserted into achannel 38 in theend plate 20 and illustrates the interaction between theend plate channel 38 and the frictionalimparting element 74 and the guide strips 80 (not shown) and 82; - FIG. 8 is an enlarged fragmentary sectional view as seen generally along line8-8 of FIG. 3 which shows a portion of the preferred apparatus as it is attached to an
inner side wall 12 of a cargo box of a pickup truck and which illustrates in phantom lines the locking member as it moves into engagement with theside rail 106; - FIG. 9 is an enlarged fragmentary sectional view of the latching member illustrating the range of motion as the
release member 196 is depressed from the position shown in phantom so that the end plate 20 (not shown) can be disengaged from the end plate engagement member 170 (not shown) and showing the adjustability of the latching member relative to the inwardly extendingflange 118 of the side rail; - FIG. 10 is a fragmentary perspective view from inside a cargo box of the pickup truck when the tailgate is in an open position (not shown), the view showing the preferred apparatus in the fixed stretching position with the latching member operatively engaging the end plate, and the locking member disengaged from the inwardly extending flange;
- FIG. 11 is a fragmentary perspective view showing an alternate embodiment of the invention, which is similar to the preferred embodiment, but has
different end plate 420 which engages in a somewhat different way with the endplate engagement member 440, wherein theend plate 420 is shown in an engaged position, but not in a fixed stretching position similar to that shown in FIG. 3; - FIG. 12 is an enlarged fragmentary sectional view of the alternate embodiment of FIG. 11 which illustrates the alternate apparatus in a fixed stretching position in which the
end plate 420 exerts a tensile force to aflexible cover 10, and which illustrates in phantom lines the apparatus as it is unlatched and rotated out of the fixed stretching position in which the flexible cover is relatively relaxed; - FIG. 13 is an enlarged fragmentary sectional view of a further alternate embodiment of the present tonneau cover apparatus, showing only a very small portion of an
alternate pickup truck 506 in phantom, and showing theend plate 520 in a fixed stretching position; - FIG. 14 is an enlarged fragmentary sectional view of the further alternate embodiment shown in FIG. 13, shown separate from the pickup truck, but showing the
end plate 520 pivoted out of the fixed stretching position such that theflexible cover 510 is relatively loose or relaxed; - FIG. 15 is a fragmentary sectional view of the further embodiment shown in FIG. 13 as generally seen from line15-15 of FIG. 13 showing the
side rail 606 clamped to thesidewall 512 of thepickup truck 506 and showing the lockingmember 560 in a locking position where thefinger portion 568 of the lockingmember 560 is engaged with an inwardly extendingflange 618 of theside rail 606 to hold theend plate 520 in the fixed stretching position; - FIG. 16 is a fragmentary section view similar to that shown in FIG. 8, but of a portion of yet another alternate embodiment which is the same as the preferred embodiment shown in FIG. 8 except that there is no latch member and the locking
member 760, while it is similar to the lockingmember 60 shown in FIG. 8, is shown in a disengaged position where the lockingmember 760 is in contact with the inwardly extendingflange 818, furthermore, the lockingmember 760 does not have guide strips or a friction imparting element as disclosed in association with lockingmember 60 and lockingmember 760 slides easily withinchannel 738 which is the same aschannel 38 inend plate 20 of the preferred embodiment shown in FIG. 8; the lockingmember 760 differing from lockingmember 60 also because it is secured within theend plate 720 with atension spring 774 which biases the lockingmember 760 toward a position consistent with a latched or locked position shown in FIG. 17; - FIG. 17 is a further fragmentary sectional view of the alternate embodiment shown in FIG. 16 except the locking
member 760 is shown in a locked or latched position where thefinger portion 768 is fully engaged with the inwardly extendingflange 818 and abuts againststop bolt 819 which prevents lockingmember 760 from being drawn in further by thetension spring 774; and - FIG. 18 is a fragmentary sectional view similar to that shown in FIG. 17, but of a further alternate embodiment the same as that shown in FIG. 17 except that the locking member960 is biased toward a position consistent with a locked or a latched position by a compression spring 980 pushing the locking member 960 to such position rather than operating in the manner the
tension spring 774 shown in FIG. 17, that biases the lockingmember 760 by pulling on it. - Referring now to the drawings, and specifically FIGS.1-10, there is illustrated a preferred embodiment of the present invention, wherein
reference numeral 6 designates a vehicle, preferably a pickup truck,reference numeral 8 designates a preferred tonneau cover apparatus andreference numeral 10 designates the flexible cover. FIG. 1 illustrates aflexible cover 10 in use on acargo box 1 1 of apickup truck 6 having twoouter sidewalls 12, each having an inner sidewall 14 (shown in FIG. 8), aforward end 13 and atailgate 16, preferably with a release handle andlock mechanism 18, actuated with a key (not shown) or, alternatively, a remotely actuated lock mechanism, having a remote keyless actuator (not shown), like those which are now well known in the art. As depicted, theflexible cover 10 is covering a top of a perimeter the cargo box 11 of thepickup truck 8. Theflexible cover 10 is secured to a front plate 19 and anend plate 20 each of which are secured to supportframe 104 that includesrails 106 which are clamped to therespective sidewalls 12 of thepickup truck 6. - FIG. 2 shows the preferred
tonneau cover apparatus 8, including the flexible,stretchable fabric cover 10, separated from the pickup truck. The rearward end of the flexible cover is attached to anelongated end plate 20 having anend plate cap 90 with anexterior surface 92. The other end of theflexible cover 10 is preferably attached to the front plate 19 (shown in FIG. 1) in a manner similar to that disclosed in U.S. Pat. No. 5,906,407 to Schmeichel ('407 patent), the disclosure of which is hereby incorporated herein by reference. The front plate 19 is preferably secured to therespective side rails 106 in an equivalent or similar manner that is disclosed in U.S. Pat. No. 5,076,338, the disclosure of which is hereby incorporated by reference, or in other Schmeichel patents that are incorporated herein by reference. In preferred embodiments, the front plate 19 will be secured to therespective side rails 106 in the manner disclosed in the '407 patent. Theflexible cover 10 is preferably made of a resilient fabric material, which is preferably laminated to a polyester sheet to give it strength, flexibility, additional resilience, and water resistance. - The preferred
tonneau cover apparatus 8 is secured to thesidewalls 12 of thepickup truck 6 using clamps 130 (see FIGS. 3 and 8), which secure therespective side rails 106 to theinner wall 14, which is an extension of thesidewall 12. The front plate 19 is secured to therespective side rails 106 as described above and theend plate 20 is engaged to a pair of end plate engagement members 170 (see FIGS. 3 and 5). When theend plate 20 is engaged it will initially occupy a position with respect to therespective engagement members 170 similar to that shown in phantom in FIG. 3. Thedistal end 32 of theend plate 20 is then pushed downward and the peak orcrest 26 of theproximate end 20 will then pivot against thepivot point 176 of therespective engagement member 170 such that thefoot 30 of theend plate 20 will push thepawl element 200 of thelatch member 190 downward and out of its path, so that theend plate 20 can become fully engaged within therespective engagement members 170 and thefoot 30 becomes fully engaged within the inclined portion 178 (see FIG. 5) of theengagement member 170, as shown in FIG. 3. In this position, theend plate 20 is in a closed or a fixed stretching position, where theend plate 20 preferably exerts a tensile force upon theflexible cover 10 so that theflexible cover 10 will stretch and remain taught over the cargo box 11. - When the
end plate 20 is in the fixed stretching position, lockingmembers 60 can be pushed into a closed or locking position to prevent theend plate 20 from being disengaged from therespective engagement members 170. The lockingmembers 60 slide, when pushed, within asecond channel 38 in theend plate 20. Because lockingmembers 60 are designed to create friction when moved within thesecond channel 38, it takes some force to move the lockingmembers 60 into a locking position like that shown in phantom in FIG. 8. This requirement for force to slide the locking members is designed to prevent the locking members from accidentally sliding into such a position when they are meant to be disengaged, and from sliding into an unlocked or disengaged position similar to that shown in FIG. 8 when they are meant to be in the fully engaged or locked position shown in phantom in FIG. 8. - When the
end plate 20 is in the closed or fixed stretching position shown in FIG. 3, and it is desirable to open thetonneau cover apparatus 8 to gain access to the cargo box 11, the lockingmembers 60 must be moved to a position where they are not engaged with the inwardly extendingflange 118 of thesupport structure 104. Thelatch member 190 must then be depressed to a position consistent with that shown in phantom in FIG. 3 so that thepawl element 200 is disengaged from thefoot 30 of theend plate 20 so that the foot can pivot out of the cavity proximate theinclined portion 178 of theengagement member 170 without being impeded by thepawl element 200. This can be accomplished either by pushing downward on therelease member 196 or pulling downward on thegrip element 236 with enough force to bend thelatch member 190. In this way, theend plate 20 is freed to pivot out of the fully engaged relationship with therespective engagement members 170 and release the tension on the flexible cover and even roll the flexible cover up around the end plate in a manner similar to this described in the previously described and incorporated Schmeichel patents. - As depicted in FIG. 2, the
end plate 20 is disengaged from apawl element 200 on a latchingmember 190 and a lockingmember 60 is disengaged from a raisedlongitudinal portion 118 of a side rail 106 (shown in FIG. 8) prior to pivoting or rotating theend plate 20 about an endplate engagement member 170 and out of a fixed stretching position shown in FIG. 1. Although a generally rectangularlyshaped end plate 20 is depicted in the drawings, it is understood that theend plate 20 may have other configurations without departing from the spirit and scope of the invention. Moreover, it is understood that only selected portions of theend plate 20 are necessary to normal operation and that unnecessary portions may be omitted, if desired. In preferred embodiments the end plate is made of an aluminum alloy material. - FIGS. 2, 3,5 and 8-10 also illustrate attachment of the
flexible cover 10 to thesupport frame 104. As depicted, thesupport frame 104 preferably includes side rails 106 having avertical attachment portion 108 including asidewall contacting surface 110, an inwardly extendingportion 114, and aninclined portion 116 onto which one half of a two part, hook andloop type fastener 124 has been attached. Theflexible cover 10 has been provided with the other half of the two part, hook andloop type fastener 124 to enable the sides of theflexible cover 10 to be removably attached to theinclined portion 116 of theside rail 106. One method by which an end of theflexible cover 10 is attached to a portion of theend plate 20 shown in FIG. 2 is described in U.S. Pat. Nos. 5,076,338 and 5,174,353, the disclosures of which are incorporated by reference. Note that in the embodiment shown in FIG. 2 thestrap 86 is attached to a lockingmember 60 rather than a portion of the end plate itself. It will be appreciated that this strap might be just as effective if it were attached directly to the end plate (not shown) in other embodiments and that it need not be attached to the lockingmembers 60. As shown in FIG. 12, which discloses an alternate embodiment, the flexible cover material can be secured in such a way that additional material creates aflap 123 which covers the top of thetailgate 16 and provides a further seal or covering to limit the passage of dust and moisture into the cargo box 11. - FIGS. 3 and 10 illustrate the apparatus as it pivots or rotates position into and out of a fixed stretching position and when in the fixed stretching position. As best seen in phantom lines,
end plate 20 includes adistal end 32, which terminates in afirst channel 36, which receives an end of theflexible cover 10. Theend plate 20 also includes asecond channel 38, which is sized to slidingly receive a lockingmember 60. Thesecond channel 38 is generally T-shaped and includes opposingsidewalls upper wall 44 and opposingflanges stretcher bar 20 also includes cavities, which are sized to receiveplugs end plate cap 90. Theplugs ribs end plate cap 90 to be frictionally attached to theend plate 20. When theend plate 20 is rotated or pivoted into a fixed stretching position, a peak orcrest 26 of theend plate 20 contacts apivot point 176 of an end plate engagement member, orstrike 170. Aridge 28 on thebase portion 24 of theend plate 20 then sweeps an upper surface 182 of anextension portion 174 of the endplate engagement member 170. Referring now also to FIGS. 4-5 and 8-9, theridge 28 then contacts and deflects thepawl element 200 of theengagement portion 194 of a latchingmember 190. That is to say, the latchingmember 190 is deflected from a first position where the end plate is prevented from being disengaged from the fixed stretching position to a second position, which permits the apparatus to be disengaged from the fixed stretching position. After theridge 28 passes thepawl element 200, two things occur. First, thebase portion 24 is moved into a baseportion receiving area 180 in the endplate engagement member 170, and second, the latchingmember 190 moves from the second position to the first position wherein thepawl element 200 of the latchingmember 190 is biased into apawl receiving area 50 of the end plate where it confronts afoot 30 on theend plate 20. Thepawl element 200 may be disengaged from thefoot 30 and withdrawn from thepawl receiving area 50 by placing downward pressure on arelease member 196 or pulling downward on agrip element 236. - Turning more specifically to FIG. 4, the latching
member 190 has abody portion 192, anengagement portion 194, arelease member 196 and anattachment portion 198. Theengagement portion 198 includes apawl element 200 having aridge engagement surface 202 and afoot engagement surface 204. Adjacent thefoot engagement surface 204 is a recess orrelief 206 which accommodates afastening element 186 used to attach the end plate engagement member or strike 170 to the support frame 104 (see FIG. 3). Note that the angle “A” between thefoot engagement surface 204 and a top surface 207 of therecess 206 of thebody portion 192 is preferably less than or equal to 90 degrees, preferably less than 90 degrees and preferably around 88 degrees to prevent theend plate 20 from being forced out of the fixed stretching position when lifting force is applied upwardly upon the bottom ofend plate 20 when it is in the fixed stretching position as shown in FIG. 3. Theupper surface 212 of thelatch member 20 is generally parallel with the top surface 207 of therecess 206, so the angle “A” will be the same as an angle (not shown) between thefoot engagement surface 204 and theupper surface 212 of thelatch member 190. The latchingmember 190 includes arelease member 196, which is preferably anupright member 208 with anenlarged head 210. In operation, therelease member 196 is manipulated by placing downward pressure on theenlarged head 210 of therelease member 196 through theflexible cover 10 and is used to disengage thepawl element 200 from thefoot 30 of theend plate 20. Referring now also to FIG. 9, an upwardly extendingrecess 214, having athroat portion 216, partially delineates or separates theattachment portion 198 from thebody portion 192. Theattachment portion 198 is connected to thebody portion 192 by a thinnedportion 218. Theattachment portion 198 includes aslot 226, which receives afastener 220 and a threadedaperture 228, which receives an adjustment member orelement 230. Theattachment portion 198 also includes a limiter or stop 232, which controls the range of motion of the latchingmember 190 as it moves from the first position to the second position. Note that the upper and lower surfaces 198 a, theattachment portion 198, that are parallel to broken line 198 c (shown schematically in FIG. 4), reside at an angle, B, with respect to upper andlower surfaces 192 a, 192 b of thebody portion 192, respectively, when thelatch member 190 is disengaged from theside rail 106. This angle “B” is preferably about 1 to about 7, more preferably about 3 to about 5, more preferably about 4 degrees and ensures that theupper surface 212 of the latchingmember 190 biasingly contacts an inwardly extendingflange 118 on aside rail 106 when the latchingmember 190 is attached thereto as shown in FIGS. 3 and 5. The latchingmember 190 is preferably manufactured from a glass filled nylon resin material. - FIG. 5 illustrates the juxtaposition between a
side rail 106 an end plate engagement member or strike 170 and a latchingmember 190. As can be seen, theside rail 106 includes aninclined portion 116 and an inwardly extendingflange 118 with anupper surface 120. The endplate engagement member 170 generally includes abody portion 172 and anextension portion 174. More specifically, thebody portion 172 includes apivot point 176, aninclined portion 178 and an end plate baseportion receiving area 180. Theextension portion 174 is somewhat tapered and includes anupper surface 177 and anaperture 188. Referring now also to FIG. 3, the endplate engagement member 170 has alower surface 184 common to thebody portion 172 and theextension portion 174. Also referring to FIG. 3, thebody portion 172 of the endplate engagement member 170 includes an integrally attachedfastening element 186, a portion of which extends beyond thebody portion 172 and through anaperture 126 in theflange 118 and which is secured by an appropriatelysized nut 127. Like theaforementioned latching element 190, the endplate engagement member 170 is formed so that thelower surface 184 is slightly concave. This allows theextension portion 174 to biasingly contact theupper surface 120 of theflange 118 when the endplate engagement member 170 is attached thereto. As with the aforementioned latching member, the endplate engagement member 170 is preferably manufactured from a glass filled nylon resin material. - The bolt or
fastening element 186 preferably has an axis “b” which passes through the center of thebolt 186. This axis “b” is preferably located a distance from thepivot point 176 and denoted by line “a” in FIG. 3, by a distance “d1” which is preferably equal to or less than 4 inches, more preferably 3 inches, even more preferably 2.5 inches, even more preferably 2.0 inches, even more preferably 1.5 inches, even more preferably 1.25 inches, more preferably 1.0 inch, and even more preferably seven-eighths of an inch. In a more preferred embodiment, this distance will be about {fraction (13/16)}ths of an inch. - FIG. 6 illustrates a locking
member 60 in isolation prior to use. The lockingmember 60 generally comprises anupper portion 62, alower portion 64 and aweb 66 therebetween. In particular, theupper portion 62 includes atop surface 72 onto which a friction-impartingelement 74 has been affixed. The term friction-imparting element in the context of this invention is understood to mean a material, which is capable of causing friction between the lockingmember 60 and theend plate 20 when the locking member is moved within the end plate. The preferredfriction imparting element 74 in this instance is a loop portion of a hook and loop type fastening element. Theupper portion 62 also includes opposing side surfaces 76, 78 and corresponding opposite guide strips 80, 82. The term guide strip in the context of this invention is understood to mean a structure, which is preferably relatively rigid in comparison to the friction-imparting element, although it need not be so. The preferred guide strip in this instance is composed of the same material as the locking member. As illustrated, theupper portion 62 has the same general cross-sectional T-shape as thechannel 38 into which it is inserted. While a T-shape is illustrated, it is understood that thechannel 38 andupper portion 62 may be formed in other complimentary configurations without departing from the spirit and scope of the invention. When lockingmember 60 is first placed into thechannel 38, the guide strips 80, 82 are generally shaved off a bit to fit the channel. Once the resultingshavings 83 fall away, the lockingmember 60 will be friction fit in thechannel 38. This is important so that the locking member will not inadvertently slide closed when it is intended to be open or slide open when it is intended to be closed. Turning to thelower portion 64, one end of the lower portion includes afinger 68, which extends beyond the body of thelower portion 64. Thefinger portion 68 includes anengagement surface 70, which is configured to slidingly engage theflange 118 of a side rail 106 (see FIG. 8). Thelower portion 64 is also provided with aslot 84 through which astrap 86 may be threaded, thestrap 86 serving to position and align thebase portion 24 of theend plate 20 adjacent the end plate engagement member or strike 170 prior to pivoting the end plate into the fixed stretching position shown in FIGS. 1 and 3. - FIG. 7 illustrates a locking
member 60 as it is being installed into achannel 38 of anend plate 20. As the lockingmember 60 is inserted into thechannel 38, the friction-impartingelement 74 is compressed and comes into sliding contact with theupper surface 44 of the channel 38 (see FIG. 3). At the same time, the guide strips 80, 82 are engaged bysidewalls sidewalls channel 38. As depicted aportion 83 of the opposite guide strips are planed away or shaved during assembly. Thus, the width of theupper portion 62 and attendant guide strips 80, 82 is then sized to friction fit within the width of thechannel 38. In especially cold weather, the resin material of the preferred lockingmember 60 and the aluminum alloy of the preferred end plate both contract, but the lockingmember 60 will contract somewhat more than theend plate 20. In especially hot weather, both thepreferred locking member 60, made of resin material, and thepreferred end plate 20, made of aluminum alloy, will expand, but it is believed that the expansion of the aluminum alloy will be greater. In each case, therefore, in both especially cold temperatures and in especially hot temperatures, thepreferred locking member 60 and thepreferred end plate 20 will contract or expand at different rates and this will cause some looseness of the sliding lockingmember 60 within theend plate 20. The use of the friction-impartingelement 74 is intended to compensate for this variation and to prevent the lockingmember 60 from sliding into a locked position when it has been placed, and is intended to remain in, an open position. - In the preferred embodiment, the
friction imparting element 74 and the guide strips 80, 82, are all in sliding contact with thewalls upper portion 66 are in sliding contact withflanges second channel 38. These sliding contacts combine to provide a relatively constant resistive force over a wide range of temperatures as the locking element is manipulated along the channel. While the preferred embodiment features one friction imparting element and a plurality of guide strips elements, it is understood that other combinations may be used. As with the aforementioned latching member and end plate engagement member, the lockingmember 60 is preferably manufactured from a glass filled nylon resin material. - FIG. 8 illustrates a portion of the apparatus attached to an
inner sidewall 14 of the pickup truck. More specifically, aside rail 106 of the support frame is attached to theinner sidewall 14 preferably by a plurality ofclamps 130. Theclamp 130 has afirst arm 132 and asecond arm 150. As illustrated, thefirst arm 132 and thesecond arm 150 engage each other atcontact surfaces arms arms clamp 130 is tightened. Thefirst arm 132 includes aproximal end 134, atransition portion 136 and adistal end 138. Theproximal end 134 includes acontact surface 139 having arecess 140, which is configured to receive and rotatingly support a pivot orprojection 158 on thesecond arm 150. The preferred configuration of therecess 140 is generally oriented orthogonally to the longitudinal axis of thearm 132. Theproximal end 134 also includes a transversely alignedcavity 144, which is coaxially aligned with an aperture 166 in anut 167. Thecavity 144 is sized to securely retain thenut 167 of afastening element 169, which includesnut 167 andbolt 164. Thecavity 144 is sized to loosely receive the shaft of abolt 164 of thefastening element 169. Although the aperture 166 is sized to fit thebolt 164, the cavity is much larger which allows the clamp to fall open easily at the end nearest thedistal end 138 and distal non-parallel side joint between two surfaces similar to that shown in FIG. 8. Thedistal end 138 of thefirst arm 132 includes a sidewall-contactingportion 148, which is preferably provided with agrip element 148. Thegrip element 148 has an irregular shaped surface and may be suitably affixed to the sidewall-contactingportion 146. Thepreferred grip element 148 has an irregular surface similar to course sandpaper and the preferred method of affixing is by using an adhesive. Thesecond arm 150 includes aproximal end 152, atransition portion 154 and adistal end 156. As mentioned above, the proximal end includes acontact surface 157 having a pivot orprojection 158, which is configured to be rotatingly supported within arecess 140 in theproximal end 134 of thefirst arm 132. As with therecess 140, the preferred configuration of the projection is generally oriented orthogonally to the longitudinal axis of thearm 150. Theproximal end 152 of the second arm also includes a transversely alignedcavity 145, which is sized to loosely receive the shaft of abolt 164 of thefastening element 169. Thedistal end 156 includes a side rail-contactingportion 162. As depicted, the siderail-contactingportion 162 is configured to mesh with a similarly configured surface on avertical attachment portion 108 of aside rail 106. Since theoversized cavities second arms pivot 158 into thepivot receiving recess 140, the respective side rail andsidewall contact portions clamp 130 to forcibly held together a pair of relatively flat objects whose opposite surfaces when joined together present non parallel surfaces. - In operation, to secure a
side rail 106 to aninner wall 14 of a truck, aside rail 106 is brought into contact with aninner sidewall 14 of atruck 6. Aclamp 130 is then positioned so that it straddles theinner sidewall 14 and theside rail 106. With therecess 140 and theprojection 158 of the respective contact surfaces 139 and 157 in communication with each other, the fastening element is then snugged up so that the distal ends 138 and 156 contact thesidewall 14 andside rail 106, respectively. The fastening element is then manipulated to gradually increase the clamping force. As the force is increased several things occur. First, thearms second arms arms transition portions second arms narrower transition portions side rail 106 to aninner sidewall 14 is essentially completed. This is because the clamp may not be easily over tightened. With this preferred embodiment, not only is possibility overtightening substantially reduced, but theclamp 130 provides a relatively constant clamping force, which compensates for differences in thickness of the material to be clamped together and also differences in attachment points. - FIG. 8 also illustrates the operation of the locking
member 60 as it may be manipulated between a first position where it operatively connects anend plate 20 to aside rail 106 of a support frame 104 (shown in phantom lines) and a second position where the lockingmember 60 is disengaged from theside rail 106 of thesupport frame 104. Note in the first position, thatengagement surface 70 of thefinger portion 68 engages thelower surface 122 of theside rail flange 118. - FIG. 9 illustrates in broken line a position of the latching
member 190 at the point where either therelease member 196 has been manipulated by placing a downward force upon it, or by pulling downward on thebody portion 192 or thechord 236 secured to the far end ofbody portion 192 and the pawl element 200 (see FIG. 4) has been disengaged from the pawlelement receiving area 50 of the end plate 20 (see FIG. 3). That is, the latchingmember 190 has been moved to the second position. Note that thethroat portion 216 has been effectively closed and thebody portion 192 is in contact with thelimiter 232. As therelease member 196 is manipulated, it is contained within or encircled by an appropriatelyover-sized opening 128 in the inwardly extendingflange 118 of aside rail 106. The latchingmember 190 is attached to theflange 118 by afastening element 219, such as abolt 220 andattendant washer 222 andnut 224. Thebolt 220 is inserted through an appropriatelysized aperture 126 and through the latchingmember 190, after which it is secured with awasher 222 andnut 224. The latchingmember 190 may be adjusted relative to theflange 118 and bolt 220 by the provision of a somewhatoversized slot 226, which slidingly admits the shaft of abolt 220 of thefastening element 219. Positioning of the shaft of thebolt 220 within theslot 226 may be achieved by manipulating anadjustment bolt 230, which is threadably received in a threadedaperture 228 within theattachment portion 198 of thelatch member 190. - Referring now specifically to FIG. 10, an
end plate 20 is shown in the fixed stretching position in which the pawl element 200 (see FIGS. 3 and 5) of the latchingmember 190 projects through theflange 118 of aside rail 106 and into thepawl receiving area 50 of theend plate 20. The lockingmember 60 has been manipulated or moved to the second position so that it lies inboard of theflange 118. In this position, thefinger 68 does not operatively connect theend plate 20 to the support frame. Note that thestrap 86 has one end, which is attached to the lockingmember 60, and another end which is attached to a mid bar or bow 250. Such an arrangement serves to guide the peak/crest 26 of theend plate 20 into operative contact with thepivot point 176 of the endplate engagement member 170 prior to rotating theend plate 20 into the fixed stretching position. - Referring now also to FIGS. 11 and 12, a further embodiment of the
tonneau cover apparatus 408 is depicted. This embodiment differs from the preferred embodiment in that anend plate 420 is provided with generally radially shapedbase portion 422 and the endplate engagement member 440 is provided with a reciprocally similarly shaped baseportion receiving area 442 so that thebase portion 422 can slidably pivot within the baseportion receiving area 442 when fully engaged therewith as shown in FIG. 11 where theend plate 420 has been lifted away from the fixed stretching position shown in FIG. 12 and thebase portion 422 has pivoted within the receivingarea 442 slightly away from the fixed, stretching position. As shown in phantom in FIG. 12, when thebase portion 422 is pivoted further, it will come away from the baseportion receiving area 442, but not before it has slidingly pivoted somewhat within the receivingarea 442. - In this embodiment, the reciprocating
radial base portion 422 and baseportion receiving area 442 of the endplate engagement member 440 compliment each other so that thebase portion 422 can pivot smoothly within theengagement member 440 through a limited but significant radius. When thebase portion 422 has pivoted far enough that thecatch point 424 of theend plate 420 engagements thepivot point 444 of theengagement member 440, the notch or dip 426 between thecatch point 424 and thearcuate surface 428 of thebase portion 422 will rotate or slide over therounded surface 446 of thepivot point 444, enabling thebase portion 422 to disengage from the baseportion receiving area 442 of the endplate engagement member 440. - Referring now also to FIGS. 13, 14, and15, a further alternate embodiment of the present invention is disclosed. In this embodiment, the
end plate 520 again has aradial base portion 522 that engages a reciprocating radial baseportion receiving area 542. Thebase portion 522 can slide smoothly within the baseportion receiving area 542 in a manner similar to that disclosed with respect to the embodiment disclosed in FIGS. 11 and 12, but thearcuate catch point 424 and thearcuate surface 428, in the embodiment disclosed in FIGS. 11 and 12, are replaced with aflat catch surface 524. This surface joins to a portion of theradial surface 525 to form a notch or dip 526 at the junction thereof. In this case, however, when the notch or dip 526 becomes engaged with the preferably round surface of thepivot point 676 of theengagement member 670, the notch 526 will slide over or partially around thepivot point 676, as theend plate 520 pivots further and thebase portion 522 disengages from the radial baseportion receiving area 542. - The alternate embodiment shown in FIGS. 13, 14 and15 also includes a locking
member 560 that engages an inward extendingflange 618 of aside rail 606 in a manner similar to that disclosed in the preferred embodiment, except that the lockingmember 560 is configured differently and thefinger portion 568 is configured somewhat differently. In addition the lockingmember 560 is secured within achannel 538 by securing abolt 539 to the lockingmember 560 with anut 541. Thebolt 539 slides easily within thechannel 538 to engage the inwardly extendingflange 618 of theside rail 606. In preferred embodiments, theend plate 520 will have a pair ofradial base portions 522 proximate the respective ends of theend plate 520 which are configured to reciprocally engage a pair ofengagement members 670 secured to each of a pair ofside rails 606 attached to respective sidewalls (not shown) of thepickup truck 506. The other features of this alternate inventions are similar to or the equivalent to those features of the preferred embodiment disclosed in FIGS. 1-10. - Referring now also to FIGS. 16 and 17, yet another alternate embodiment of the present invention is disclosed in which the alternate embodiment differs from the preferred embodiment disclosed in FIGS.1-10, but providing an
alternate locking member 760 which slides easily within achannel 738 similar to thesecond channel 38 of the preferred embodiment. In the alternate embodiment shown in FIGS. 16 and 17, the lockingmember 760 does not include the friction imparting elements or guide strips of the preferred embodiment. Instead, thealternate end plate 720 includes atension spring 774 secured at each end of theelongated end plate 720 to bias each of two locking members toward a position consistent with a closed or locked position similar to that shown in FIG. 17. The tension springs 774 are secured to the respective interior surfaces (not shown) ofrespective end caps 790 at each of theends 793 of thealternate end plate 720 and to therespective locking members 760, thereby biasing each of the lockingmembers 760 toward a pair ofstop bolts 819 secured to theend plate 720 proximate each of the respective ends 793 of theend plate 720. A draw cord orcable 765 is also attached to each of the respective locking members. Each of the respective draw cords are preferably passed through aneyebolt guide 767 and gathered together in aguide actuator 769. - During use, the
alternate end plate 720 provides a locking or latch mechanism because the chamfered or beveledbottom surface 781 of each of thefinger portions 768 of each lockingmember 760 will be displaced when theendplate 720 pivots with respect to the engagement members (not shown) into a closed or fixed stretching position from a position in which theend plate 720 is engaged with the respective engagement members (not shown), but has not pivoted into the position shown in FIG. 17. In FIG. 16, the lockingmembers 760 are just beginning to be displaced as theend plate 720 pivots down to a closed position shown in FIG. 17. When the lockingmembers 760 rest against thestop bolts 819, against which they are biased by thetension spring 774, they will engage theflange 818 if theend plate 720 is in the closed or fixed stretching position. As theend plate 720 is pivoted with respect to the engagement members (not shown), the beveledbottom surface 781 will first contact the upper side of theend 821 of the respective inwardly extendingflange 818, will be forced away from thestop bolt 819 until thefinger portion 768 passes below theflange 818 andend plate 720 is fully engaged as shown in FIG. 17. In FIG. 17, the beveledbottom surface 781 is no longer engaged with the upper side of theend 821 of the inwardly extendingflange 818, and the spring biased locking member will engage theflange 818 as shown in FIG. 17. When theend plate 720 is not engaged as shown in FIG. 17 the spring biased lockingmember 720 will slide to the same position shown in FIG. 17, because it will spring biased against thestop bolt 819 which is positioned within theend plate 720 such that the lockingmember 760 will stop against thestop bolt 819 is the same position it will occupy within theend plate 720 when the lockingmember 760 is biased up against theend 821 of theflange 818. - In order to lift the
end plate 720 and pivot it out of the fixed stretching position in which it resides in FIG. 17, a user can draw the draw cords orcables 765 by pulling on thepull actuator 769, thereby drawing the lockingmembers 760 away from each of therespective flanges 818, thereby disengaging therespective finger portions 768 from therespective flanges 818 as shown in phantom in FIG. 17 when the lockingmembers 760 are in this position, theend plate 720 can be pivoted out of the respective engagement members, and thecover 710 can be rolled up in order to gain better access to the cargo box. - Yet another alternate embodiment is shown in FIG. 18 where an embodiment like that shown in FIGS. 16 and 17 is shown, but which differs primarily only because the tension springs774 of the embodiment shown in FIGS. 16 and 17 are replaced by
compression springs 974 which pushes, rather than pulls the locking member 960 or members, if there are more than one, which there preferably are, against theflange 1018 and/or thestop bolt 1019. In this case, thecompression spring 974 slides over and is engaged by a first spring guide protrusion 977 extending away from the locking member 960 and a secondspring guide protrusion 979 extending away from a spring stop 983. All the other features of this embodiment are preferably the same as the features of the alternate embodiment shown in FIGS. 16 and 17 and this embodiment operates generally in the same way with the exception of the operation of thecompression spring 974 as compared to thetension spring 774. - It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (16)
1. A tonneau cover apparatus for removably attaching a flexible cover about a perimeter of a cargo box and tailgate of a pickup truck, the tonneau cover apparatus comprising:
a support frame, the support frame removably attached about the cargo box of the pickup truck;
an end plate engagement member, the end plate engagement member being attached to the support frame, the end plate engagement member configured to engage and receive a portion of the end plate as the end plate is translated and pivoted into and out of a fixed stretching position in which a tension is placed upon the flexible cover;
an end plate, the end plate being attached to an end of a flexible cover, the end plate configured to cooperatively engage and pivot with respect to the end plate engagement member and into and out of the fixed stretching position wherein the flexible cover can be correspondingly be tensed and relaxed; the end plate having a radial engaging surface and the end plate engagement member having a receiving surface which engages the radial engaging surface when the end plate pivots into the fixed stretching position.
2. The tonneau cover apparatus of claim 1 , wherein the end plate engagement member has a radial receiving surface which engages the radial engaging surface when the end plate pivots into the fixed stretching position.
3. The tonneau cover apparatus of claim 1 , further including a locking member, the locking member operatively connected to the end plate rearward of the end plate engagement member when the end plate is in the fixed stretching position; the locking member being moveable between a first position and a second position, wherein the locking member prevents the end plate from being disengaged from the fixed stretching position when the locking member is in the first position, and wherein the end plate can be disengaged from the fixed stretching position when the locking member is in the second position.
4. The tonneau cover apparatus of claim 3 , wherein the perimeter of the cargo box includes a forward end and two opposing sidewalls; the support frame includes two opposing side rails, one of which is secured to each of the respective opposing side walls; the tonneau cover apparatus further including a second end plate engagement member; each of the end plate engagement members being attached to one of the two side rails attached to the two opposing side walls; wherein the side rails each have an inwardly extending flange portion and the locking member includes a finger portion, the finger portion of the locking member being positioned below the respective inwardly extending flange portion when the locking member is in the first position such that the end plate cannot be disengaged from the end plate engagement member, because the finger portion is restrained by the inwardly extending flange, the finger portion of the locking member being removed from the inwardly extending flange portion when the locking member is moved from the first position to the second position such that the end plate can be disengaged from the end plate engagement member when the locking member is in the second position.
5. The tonneau cover apparatus according to claim 4 , wherein the locking member includes an upper portion which is slidably retained within the end plate, and the finger portion is spaced apart from the upper portion and extends outwardly beyond the main body of the upper portion.
6. The tonneau cover apparatus according to claim 5 , wherein the end plate includes a channel having a cross-sectional shape which is smaller at the bottom and larger at the top so that it has a generally “T” shaped configuration.
7. A tonneau cover apparatus for removably attaching a flexible cover about a perimeter of a cargo box and tailgate of a pickup truck, the tonneau cover apparatus comprising:
a support frame, the support frame removably attached about the cargo box of the pickup truck;
an end plate engagement member, the end plate engagement member being attached to the support frame, the end plate engagement member configured to engage and receive a portion of the end plate as the end plate is translated and pivoted into and out of a fixed stretching position in which a tension is placed upon the flexible cover;
an end plate, the end plate being attached to an end of a flexible cover, the end plate configured to cooperatively engage and pivot with respect to the end plate engagement member and into and out of the fixed stretching position wherein the flexible cover can be correspondingly be tensed and relaxed; the end plate engagement member having a radial receiving surface and the end plate having a radial engaging surface which engages the radial receiving surface when the end plate pivots into the fixed stretching position.
8. The tonneau cover apparatus of claim 7 , further including a locking member, the locking member operatively connected to the end plate rearward of the end plate engagement member when the end plate is in the fixed stretching position; the locking member being moveable between a first position and a second position, wherein the locking member prevents the end plate from being disengaged from the fixed stretching position when the locking member is in the first position, and wherein the end plate can be disengaged from the fixed stretching position when the locking member is in the second position.
9. The tonneau cover apparatus of claim 7 , wherein the perimeter of the cargo box includes a forward end and two opposing sidewalls; the support frame includes two opposing side rails, one of which is secured to each of the respective opposing side walls; the tonneau cover apparatus further including a second end plate engagement member; each of the end plate engagement members being attached to one of the two side rails attached to the two opposing side walls; wherein the side rails each have an inwardly extending flange portion and the locking member includes a finger portion, the finger portion of the locking member being positioned below the respective inwardly extending flange portion when the locking member is in the first position such that the end plate cannot be disengaged from the end plate engagement member, because the finger portion is restrained by the inwardly extending flange, the finger portion of the locking member being removed from the inwardly extending flange portion when the locking member is moved from the first position to the second position such that the end plate can be disengaged from the end plate engagement member when the locking member is in the second position.
10. The tonneau cover apparatus according to claim 7 , wherein the locking member includes an upper portion which is slidably retained within the end plate, and the finger portion is spaced apart from the upper portion and extends outwardly beyond the main body of the upper portion.
11. The tonneau cover apparatus according to claim 7 , wherein the end plate includes a channel having a cross-sectional shape which is smaller at the bottom and larger at the top so that it has a generally “T” shaped configuration.
12. A tonneau cover apparatus for removably attaching a flexible cover about a top of a perimeter of a cargo box of a pickup truck, the perimeter of the cargo box including a forward end, two opposing sidewalls and a tailgate, the tailgate being positioned rearward of the forward end and having an open position and a closed position, the flexible cover having first and second ends, the tonneau cover apparatus comprising:
a support frame including two opposing side rails and a pair of end plate engagement members, one of which is secured to each of the respective opposing side rails rearward of the forward end, the support frame being removably attached to the cargo box of the pickup truck;
an end plate attached to the second end of the flexible cover, the end plate configured to cooperatively engage and pivot with respect to each of the respective end plate engagement members; wherein the end plate engagement members cooperate to engage the end plate when the first end of the flexible cover is operatively connected to the support frame forward of the respective engagement members, such that the end plate can pivot into and out of a fixed stretching position wherein the flexible cover is stretched to place a tension on the flexible cover; the end plate having a radial engaging surface and each of the end plate engagement members having a receiving surface which engages a portion of the radial engaging surface when the end plate pivots into the fixed stretching position; and
a locking member, the locking member operatively connected to the end plate rearward of the each of the end plate engagement members when the end plate is in the fixed stretching position and movable between a first position and a second position when the end plate is in the fixed stretching position; wherein the locking member prevents the end plate from being disengaged from the fixed stretching position when the locking member is in the first position, and wherein the end plate can be disengaged from the fixed stretching position when the locking member is in the second position.
13. The tonneau cover apparatus of claim 12 , wherein the end plate engagement members have radial receiving surfaces which engage portions of the radial engaging surface when the end plate pivots into the fixed stretching position.
14. The tonneau cover apparatus of claim 13 , wherein the perimeter of the cargo box includes a forward end and two opposing sidewalls; the support frame includes two opposing side rails, one of which is secured to each of the respective opposing side walls; the tonneau cover apparatus further including a second end plate engagement member; each of the end plate engagement members being attached to one of the two side rails attached to the two opposing side walls; wherein the side rails each have an inwardly extending flange portion and the locking member includes a finger portion, the finger portion of the locking member being positioned below the respective inwardly extending flange portion when the locking member is in the first position such that the end plate cannot be disengaged from the end plate engagement member, because the finger portion is restrained by the inwardly extending flange, the finger portion of the locking member being removed from the inwardly extending flange portion when the locking member is moved from the first position to the second position such that the end plate can be disengaged from the end plate engagement member when the locking member is in the second position.
15. The tonneau cover apparatus according to claim 14 , wherein the locking member includes an upper portion which is slidably retained within the end plate, and the finger portion is spaced apart from the upper portion and extends outwardly beyond the main body of the upper portion.
16. The tonneau cover apparatus according to claim 15 , wherein the end plate includes a channel having a cross-sectional shape which is smaller at the bottom and larger at the top so that it has a generally “T” shaped configuration.
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/930,680 US20020096910A1 (en) | 2000-08-14 | 2001-08-14 | Tonneau cover end plate securing mechanism having a radial engaging surface |
US10/668,771 US6851738B1 (en) | 2000-08-14 | 2003-09-23 | Tonneau cover apparatus having rear bar lock |
US10/975,833 US7104586B2 (en) | 2000-08-14 | 2004-10-28 | Tonneau cover apparatus having rear bar lock |
US11/037,562 US7066524B2 (en) | 2000-08-14 | 2005-01-18 | Tonneau cover with turn knob for rear bar locks |
US11/045,857 US7472941B2 (en) | 2000-08-14 | 2005-01-28 | Tonneau cover having securing plate with lock member |
US11/778,473 US7621582B2 (en) | 2000-08-14 | 2007-07-16 | Tonneau cover securing plate having channel for lock member |
US12/577,285 US8083281B2 (en) | 2000-08-14 | 2009-10-12 | Tonneau cover securing plate |
US13/323,971 US8328267B2 (en) | 2000-08-14 | 2011-12-13 | Tonneau cover having securing mechanism |
US13/687,749 US8567843B2 (en) | 2000-08-14 | 2012-11-28 | Tonneau cover having securing mechanism |
US14/036,839 US9045069B2 (en) | 2000-08-14 | 2013-09-25 | Tonneau cover having securing mechanism |
US14/713,003 US9393854B2 (en) | 2000-08-14 | 2015-05-15 | Tonneau cover having securing mechanism |
US15/197,556 US10000113B2 (en) | 2000-08-14 | 2016-06-29 | Tonneau cover securing mechanism |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22510900P | 2000-08-14 | 2000-08-14 | |
US09/930,680 US20020096910A1 (en) | 2000-08-14 | 2001-08-14 | Tonneau cover end plate securing mechanism having a radial engaging surface |
Related Child Applications (3)
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US09/929,991 Expired - Lifetime US6543835B2 (en) | 2000-08-14 | 2001-08-14 | Tonneau cover having rear bar lock |
US09/930,660 Expired - Lifetime US6672644B2 (en) | 2000-08-14 | 2001-08-14 | Tonneau cover apparatus having engagement member with integral fastening element |
US09/930,658 Expired - Lifetime US6607234B1 (en) | 2000-08-14 | 2001-08-14 | Tonneau cover securing mechanism having spring latch |
US10/668,771 Expired - Lifetime US6851738B1 (en) | 2000-08-14 | 2003-09-23 | Tonneau cover apparatus having rear bar lock |
US10/975,833 Expired - Lifetime US7104586B2 (en) | 2000-08-14 | 2004-10-28 | Tonneau cover apparatus having rear bar lock |
US11/045,857 Expired - Fee Related US7472941B2 (en) | 2000-08-14 | 2005-01-28 | Tonneau cover having securing plate with lock member |
US11/778,473 Expired - Fee Related US7621582B2 (en) | 2000-08-14 | 2007-07-16 | Tonneau cover securing plate having channel for lock member |
US12/577,285 Expired - Fee Related US8083281B2 (en) | 2000-08-14 | 2009-10-12 | Tonneau cover securing plate |
US13/323,971 Expired - Fee Related US8328267B2 (en) | 2000-08-14 | 2011-12-13 | Tonneau cover having securing mechanism |
US13/687,749 Expired - Fee Related US8567843B2 (en) | 2000-08-14 | 2012-11-28 | Tonneau cover having securing mechanism |
US14/036,839 Expired - Fee Related US9045069B2 (en) | 2000-08-14 | 2013-09-25 | Tonneau cover having securing mechanism |
US14/713,003 Expired - Lifetime US9393854B2 (en) | 2000-08-14 | 2015-05-15 | Tonneau cover having securing mechanism |
US15/197,556 Expired - Fee Related US10000113B2 (en) | 2000-08-14 | 2016-06-29 | Tonneau cover securing mechanism |
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US09/930,658 Expired - Lifetime US6607234B1 (en) | 2000-08-14 | 2001-08-14 | Tonneau cover securing mechanism having spring latch |
US10/668,771 Expired - Lifetime US6851738B1 (en) | 2000-08-14 | 2003-09-23 | Tonneau cover apparatus having rear bar lock |
US10/975,833 Expired - Lifetime US7104586B2 (en) | 2000-08-14 | 2004-10-28 | Tonneau cover apparatus having rear bar lock |
US11/045,857 Expired - Fee Related US7472941B2 (en) | 2000-08-14 | 2005-01-28 | Tonneau cover having securing plate with lock member |
US11/778,473 Expired - Fee Related US7621582B2 (en) | 2000-08-14 | 2007-07-16 | Tonneau cover securing plate having channel for lock member |
US12/577,285 Expired - Fee Related US8083281B2 (en) | 2000-08-14 | 2009-10-12 | Tonneau cover securing plate |
US13/323,971 Expired - Fee Related US8328267B2 (en) | 2000-08-14 | 2011-12-13 | Tonneau cover having securing mechanism |
US13/687,749 Expired - Fee Related US8567843B2 (en) | 2000-08-14 | 2012-11-28 | Tonneau cover having securing mechanism |
US14/036,839 Expired - Fee Related US9045069B2 (en) | 2000-08-14 | 2013-09-25 | Tonneau cover having securing mechanism |
US14/713,003 Expired - Lifetime US9393854B2 (en) | 2000-08-14 | 2015-05-15 | Tonneau cover having securing mechanism |
US15/197,556 Expired - Fee Related US10000113B2 (en) | 2000-08-14 | 2016-06-29 | Tonneau cover securing mechanism |
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US8328267B2 (en) | 2000-08-14 | 2012-12-11 | Agri-Cover, Inc. | Tonneau cover having securing mechanism |
US20050134080A1 (en) * | 2000-08-14 | 2005-06-23 | Schmeichel Charles M. | Tonneau cover end plate securing mechanism having a radial engaging surface |
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US7066524B2 (en) * | 2000-08-14 | 2006-06-27 | Agri-Cover, Inc. | Tonneau cover with turn knob for rear bar locks |
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US7472941B2 (en) * | 2000-08-14 | 2009-01-06 | Agri-Cover, Inc. | Tonneau cover having securing plate with lock member |
US7621582B2 (en) | 2000-08-14 | 2009-11-24 | Agri-Cover, Inc | Tonneau cover securing plate having channel for lock member |
US10000113B2 (en) | 2000-08-14 | 2018-06-19 | Agri-Cover, Inc. | Tonneau cover securing mechanism |
US20050151390A1 (en) * | 2000-08-14 | 2005-07-14 | Schmeichel Charles M. | Tonneau cover apparatus having rear bar lock |
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US9056542B2 (en) | 2011-08-31 | 2015-06-16 | Agri-Cover, Inc. | Tonneau cover having a draw cord |
US9260139B2 (en) | 2011-08-31 | 2016-02-16 | Agri-Cover, Inc. | Tonneau cover having a draw cord |
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US9908391B2 (en) | 2014-09-15 | 2018-03-06 | Rugged Liner, Inc. | Adjustable tensioning mechanism for a soft roll up tonneau cover |
US9827839B2 (en) | 2014-10-31 | 2017-11-28 | Rugged Liner, Inc. | Tonneau cover system having a latch |
US10189339B2 (en) | 2016-07-27 | 2019-01-29 | Rugged Liner, Inc. | Tonneau cover system for a cargo bed of a vehicle |
US9969249B2 (en) | 2016-09-20 | 2018-05-15 | Truxedo, Inc. | Tonneau cover system with side rail mounted latches and a rear header mounted release actuator |
US10189340B2 (en) | 2016-10-28 | 2019-01-29 | Agri-Cover, Inc. | Folding tonneau cover apparatus |
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US10286765B2 (en) | 2016-10-28 | 2019-05-14 | Rugged Liner, Inc. | Tonneau cover system for a cargo bed of a vehicle |
US11235652B2 (en) | 2016-10-28 | 2022-02-01 | Agh-Cover, Inc. | Folding tonneau cover apparatus |
US11642948B2 (en) | 2016-10-28 | 2023-05-09 | Agri-Cover, Inc. | Tonneau cover having secured flexible hinge |
US11292324B2 (en) | 2017-10-26 | 2022-04-05 | Agh-Cover, Inc. | Folding tonneau cover having secured flexible hinge |
US20210285266A1 (en) * | 2020-03-16 | 2021-09-16 | Tectum Holdings, Inc. | Electronic actuated tonneau cover striker assembly |
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Also Published As
Publication number | Publication date |
---|---|
US20080011436A1 (en) | 2008-01-17 |
US20130140843A1 (en) | 2013-06-06 |
US9393854B2 (en) | 2016-07-19 |
CA2316587A1 (en) | 2002-02-14 |
US7472941B2 (en) | 2009-01-06 |
US6607234B1 (en) | 2003-08-19 |
US6851738B1 (en) | 2005-02-08 |
US6672644B2 (en) | 2004-01-06 |
US9045069B2 (en) | 2015-06-02 |
US6543835B2 (en) | 2003-04-08 |
US7104586B2 (en) | 2006-09-12 |
US8567843B2 (en) | 2013-10-29 |
US20050134080A1 (en) | 2005-06-23 |
US20150246602A1 (en) | 2015-09-03 |
CA2316587C (en) | 2009-12-01 |
US20050151390A1 (en) | 2005-07-14 |
US20100019530A1 (en) | 2010-01-28 |
US20020096268A1 (en) | 2002-07-25 |
US20020096909A1 (en) | 2002-07-25 |
US8328267B2 (en) | 2012-12-11 |
US20140021738A1 (en) | 2014-01-23 |
US20120098293A1 (en) | 2012-04-26 |
US8083281B2 (en) | 2011-12-27 |
US10000113B2 (en) | 2018-06-19 |
US7621582B2 (en) | 2009-11-24 |
US20160303957A1 (en) | 2016-10-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AGRI-COVER, INC., NORTH DAKOTA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHMEICHEL, CHARLES M.;SCHMEICHEL, STEVEN C.;REEL/FRAME:012514/0968 Effective date: 20011207 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |