US20140033485A1 - Webbing tie down with friction roller - Google Patents
Webbing tie down with friction roller Download PDFInfo
- Publication number
- US20140033485A1 US20140033485A1 US13/960,120 US201313960120A US2014033485A1 US 20140033485 A1 US20140033485 A1 US 20140033485A1 US 201313960120 A US201313960120 A US 201313960120A US 2014033485 A1 US2014033485 A1 US 2014033485A1
- Authority
- US
- United States
- Prior art keywords
- roller
- webbing
- ratchet
- pawl
- bosses
- 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
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
-
- 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
- B60P7/06—Securing of load
- B60P7/08—Securing to the vehicle floor or sides
- B60P7/0823—Straps; Tighteners
- B60P7/083—Tensioning by repetetive movement of an actuating member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/21—Strap tighteners
Definitions
- the present invention relates to ratchets and, more particularly, to ratchets having a pawl for securing webbing against a roller.
- Ratchets of various types have been in existence for decades.
- the most common types of ratchets include a spool about which webbing or a strap is wrapped.
- a pivotable lever in engagement with sprockets attached to the spool can cause rotation of the spool in a first direction to wrap the webbing about the spool.
- a pawl or sliding member engages the sprocket to prevent rotation in the second direction whereby unwrapping of the webbing is precluded except upon release of the pawl or sliding member from the sprocket.
- a second type of ratchet is used in conjunction with a rope. It includes a spool formed by a pair of facing discs having protrusions on the facing surfaces of the discs to frictionally engage the rope. The rope is wrapped about one-half of the spool. By pulling on the free end of the rope, the spool is caused to turn in one direction to provide tension to the other end of the rope. Slippage of the other end of the rope in the other direction is precluded by the frictional engagement between the rope and the protrusions of the faces of the disc.
- a spring-loaded pawl precludes rotation of the spool in the other direction. By pivoting the pawl out of engagement with the spool, the rope is free to cause rotation of the spool in either direction.
- U.S. Pat. Nos. 6,068,242, 6,092,791, and Des. 362,614 are representative of ratchets of this type and are incorporated herein by reference.
- the major distinction between these two types of spools may be categorized as follows.
- slippage of the webbing from about a rotatably locked spool is prevented by the friction attendant layers of wrapped webbing; in some embodiments, the free end of the webbing extends through a diametrically oriented slot in the spool.
- the present invention is directed to a ratchet for use with webbing.
- a roller in the nature of a cylinder, includes either a knurled surface or ridges on the surface for frictionally engaging the webbing partially wrapped thereabout and extending into and out of the body of the ratchet.
- a pawl includes a corresponding knurled surface or ridges on the surface and is spring biased against the roller. Exerting a tension force on the webbing to be tensioned and exiting from the ratchet will cause the pawl to be pivoted toward the roller and firmly engage the webbing between the roller and the pawl. Such engagement will preclude translation of the webbing due to its frictional engagement with the pawl.
- a hook or other mechanism may be attached to the ratchet to anchor the ratchet or to engage a member to be drawn toward the ratchet.
- Another object of the present invention is to provide a low parts count ratchet.
- Still another object of the present invention is to provide a ratchet having essentially only two moving parts for securing webbing.
- Yet another object of the present invention is to provide a ratchet having a pawl for locking webbing against a freely rotatable roller.
- a further object of the present invention is to provide a ratchet with knurled surfaces on a roller and on a pawl.
- a still further object of the present invention is to provide a ratchet having ridges on the surfaces of a roller and a pawl.
- a yet further object of the present invention is to provide a method for applying tension to a length of webbing.
- FIG. 1 is an isometric view of a first embodiment of the present invention
- FIG. 2 is a side view of the present invention shown in FIG. 1 ;
- FIG. 3 is an exploded view of the major components of the first embodiment
- FIG. 4 is an exploded view
- FIG. 5 illustrates a spring coupled with a pawl
- FIG. 6 is an exploded view
- FIG. 7 is a partial cross-sectional view of the first embodiment
- FIG. 8 is an isometric view illustrating a second embodiment of the present invention.
- FIG. 9 is an isometric view illustrating straps attachable and attached to the second embodiment
- FIG. 10 is an exploded view of the major components of the second embodiment
- FIG. 11 is an exploded view
- FIG. 12 is a partial cross-sectional view of the second embodiment
- FIG. 13 is an isometric view of a third embodiment of the present invention.
- FIG. 14 is an exploded view of the major components of the third embodiment.
- FIG. 15 is a partial cross-sectional view of the third embodiment.
- FIG. 1 there is a first embodiment of a ratchet 10 showing a finger operated pawl 12 cooperating with a webbing supporting roller 14 .
- Sidewalls 16 and 18 support a plurality of bosses extending from each sidewall.
- Bosses 20 and 22 may support a loop of a webbing attached to an anchor or the like.
- Bosses 24 and 26 may be used to support a further webbing assembly, as will be described in further detail below.
- screws 28 , and 32 extend through the bosses attached to sidewall 16 into threaded engagement with corresponding bosses extending from sidewall 18 .
- a passageway 34 disposed in sidewall 16 supports a stud extending from pawl 12 .
- Roller 14 includes knurling 40 to minimize slippage of a length of webbing partially wrapped thereabout; alternatively, it may includes a plurality of longitudinally aligned ridges to assist in gripping the webbing.
- Pawl 12 as also shown in FIG. 5 , includes a lobe 42 for engaging roller 14 with greater or lesser force as a function of the rotational position of the pawl. Stud 44 is supported within passageway 34 of sidewall 16 to accommodate incremental rotation of the pawl.
- Knurling 40 may be replaced by a plurality of longitudinally aligned ridges to more firmly engage webbing in contact therewith (note for example the ridges on the pawl shown in FIG. 7 ).
- a spring 46 includes an arm 48 in penetrable engagement with passageway 50 shown in sidewall 16 to anchor the spring. It is noted that coil 52 is disposed about stud 44 . Arm 54 of the coil spring bears against ledge 56 of pawl 12 . Thereby, the spring rotationally biases pawl 12 against roller 14 to secure webbing therebetween.
- FIG. 4 is a top exploded view of ratchet 10 .
- a bolt or screw 58 extends through a passageway 60 in boss 36 into threaded engagement with a passageway 62 in boss 38 .
- a bolt or screw 64 extends through a passageway 66 in boss 24 into threaded engagement with passageway 68 in boss 26 .
- a bolt or screw 70 extends through passageway 72 in boss 20 into threaded engagement with passageway 74 in boss 22 .
- roller 14 is rotatably supported upon bosses 36 and 38 .
- Pawl 12 is pivotally supported upon stud 44 engaging passageway 34 in sidewall 16 .
- a further stud 76 is pivotally supported in passageway 78 in sidewall 18 .
- FIG. 6 is an exploded view illustrating spring 46 supported upon stud 44 with arm 54 in engagement with ledge 56 .
- Knurling 43 is disposed upon lobe 42 of pawl 12 and similar knurling 40 is disposed upon roller 14 .
- ratchet 10 in cooperation with a length of webbing 80 .
- the webbing extends partially about roller 14 in frictional engagement with knurling 40 disposed upon the roller.
- the arrow in combination with the letter F identifies the free end of webbing 80 which is pulled to cause tension on the other length of webbing, depicted by the arrow and the letter T. Thereby, the webbing can be tensioned.
- Pawl 12 includes lobe 42 configured such that upon clockwise movement of the pawl about stud 44 , surface 82 of the lobe bears against webbing 80 .
- the lobe may include knurling or the lobe may include a plurality of longitudinally aligned ridges 84 , as depicted in FIG. 7 . It may be noted that spring 46 biases pawl 12 in the clockwise direction, as shown in FIG. 7 . Thereby, frictional engagement of webbing 80 is created by both roller 14 and the lobe of pawl 12 to prevent slippage of the webbing.
- webbing assembly 90 includes loops 92 and 94 .
- a further loop 96 extends into the ratchet and wraps about bosses 24 , 26 shown in FIG. 3 .
- loop 92 may be engaged with anchoring webbing extending from bosses 20 , 22 and doubled back upon itself to loop 92 .
- webbing identified with the letter T in FIG. 7 may be looped about an item of interest and doubled back upon itself into engagement with loop 94 .
- the tension force that can be applied by ratchet 10 is essentially doubled.
- ratchet 100 there is shown a second embodiment of the ratchet designated as ratchet 100 .
- the ratchet includes a pair of sidewalls 102 , 104 supporting a pawl 106 and a roller 108 .
- a strap 110 extends from ratchet 100 to an anchor or the like. Alternatively, the strap may be doubled about an anchor and connected to loop 112 .
- Webbing 114 is connected to an item of interest and serves as the tensioning member to apply tension to the item of interest and draw it toward an anchor. Webbing 114 extends about roller 108 and provides a free end 116 . Webbing 114 may extend about an element of an item of interest and folded back upon itself for connection to loop 118 .
- a boss 120 extends from sidewall 104 and butts against boss 122 extending from sidewall 102 .
- a bolt or screw 124 extends through passageway 126 in boss 120 into threaded engagement with a corresponding passageway 128 in boss 122 .
- a bolt or screw 130 extends through passageway 132 in boss 134 extending from sidewall 102 into threaded engagement with passageway 136 in boss 138 .
- a further bolt or screw 140 extends through passageway 142 in boss 144 extending from sidewall 104 into threaded engagement with passageway 146 in boss 148 .
- Pawl 106 includes stud 150 secured within passageway 152 in sidewall 102 and a stud 154 secured within passageway 156 in sidewall 104 . Thereby, the pawl is pivotally supported intermediate sidewalls 102 and 104 .
- Roller 158 is rotatably supported upon bosses 120 and 122 .
- a spring 162 may be mounted on stud 154 and includes an arm 164 in engagement with passageway 166 in sidewall 104 to anchor that arm.
- a further arm 168 is in engagement with pawl 106 (as depicted in FIG. 12 ) to bias the pawl in the clockwise direction, as shown in FIG. 12 .
- the surface of roller 158 may include knurling 160 .
- knurling 176 is formed on lobe 172 of pawl 106 to frictionally engage with webbing 114 / 116 .
- a guide 170 is located intermediate sidewalls 102 , 104 to guide free end 116 of webbing into ratchet 100 and about roller 158 and past lobe 172 of pawl 106 when the pawl is rotated in the counterclockwise direction by pressing on extension 174 of the pawl.
- the free end 116 of webbing 114 is pulled until webbing 114 is tightened to provide a degree of tension force (depicted by the letter T) on the webbing to secure the item of interest.
- Spring 162 urges rotation of pawl 106 in the clockwise direction. This brings knurling 160 disposed on lobe 172 into frictional engagement with webbing 114 .
- webbing assembly 90 may be used to double the force exerted on strap 110 engaged about an anchor and folded upon itself into engagement with loop 92 .
- webbing 114 can be folded about itself and around an item of interest into engagement with loop 94 . As the opposing forces exerted on loops 92 , 94 are accommodated by the webbing assembly itself, no force of any consequence is imposed upon ratchet 100 .
- Ratchet 180 is formed by sidewalls 182 , 184 supporting a pawl 186 and various other elements to be described below.
- a boss 188 extends from sidewall 182 and includes a passageway 190 . It mates with a boss 192 extending from sidewall 184 .
- a bolt or screw 194 extends through passageway 190 into threaded engagement with passageway 196 in boss 192 .
- a boss 198 having a passageway 200 extending therethrough mates with a boss extending from sidewall 184 .
- a bolt or screw 204 extends through passageway 200 into threaded engagement with passageway 206 in boss 202 .
- a boss 208 having a passageway 210 extends from sidewall 182 to mate with a boss 212 extending from sidewall 184 .
- a bolt or screw 214 extends through passageway 210 into threaded engagement with passageway 216 in boss 212 .
- a boss 218 having a passageway 220 extends from sidewall 182 and mates with a boss 222 extending from sidewall 184 .
- a bolt or screw 224 extends through passageway 220 into threaded engagement with a passageway 226 in boss 222 .
- Pawl 186 includes a stud 228 for engagement with a passageway 230 in sidewall 184 .
- a similar stud 232 engages passageway 234 in sidewall 182 .
- pivotal movement of the pawl can occur about the axis of studs 228 and 232 .
- a spring 234 is mounted on stud 232 .
- Arm 236 of the spring is anchored in hole or passageway 237 in sidewall 182 .
- Arm 238 of the spring engages a hole or passageway 239 in the pawl, as particularly shown in FIG. 15 .
- the pawl is biased in the clockwise direction, as shown in FIG. 15 .
- Bosses 188 , 192 support roller 235 .
- roller 14 is depicted to include knurling 264 . However, it may include ridges instead, as shown for roller 240 .
- Boss 198 and its mating boss extending from sidewall 184 supports roller 240 .
- This roller may include a plurality of longitudinally aligned ridges 242 . Each of these ridges includes a radially aligned surface 244 .
- Pawl 186 includes a plurality of teeth or ridges 243 for engagement with ridges 242 of roller 240 .
- Webbing 246 is inserted into ratchet 180 either over bosses 188 and 192 or roller 235 and downwardly therefrom. Upon such downward movement, the webbing is guided about roller 240 by guide 248 . By depressing extension 249 of pawl 186 , the pawl is pivoted out of engagement with roller 240 to provide passage of the webbing between this roller and ridges 242 of the pawl. Webbing 246 is drawn out of the ratchet, as depicted. The free end of the webbing, as depicted by the letter F and accompanying arrow, is pulled until the length of webbing depicted by the letter T and the accompanying arrow has been tightened with respect to the item of interest attached to the webbing.
- webbing 246 Upon a continuing pulling force on webbing 246 , as depicted by the accompanying arrow, the webbing is drawn into the ratchet, as depicted by the arrow and letter T. Reverse translation of the webbing is precluded by ridges 242 of the pawl being biased toward the webbing and the mechanical interaction of these ridges to prevent counterclockwise rotation of roller 240 .
- Webbing 250 includes a loop 252 partially encircling bosses 208 and 212 .
- This webbing may be directly connected to an anchor or it may extend around the anchor and folded upon itself for connection to loop 254 .
- the length of webbing identified by the letter T may extend about the item of interest and folded upon itself for engagement with loop 256 .
- a further loop 260 extends into ratchet 180 and receives support from bosses 218 , 222 .
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Abstract
A ratchet includes a knurled or longitudinally ridged roller for engagement by webbing. A pawl includes a lobe having knurling or ridges formed thereon on its curved surface for contacting the webbing and urging the webbing toward the roller. Upon applying a pulling force on the free end of the webbing it causes the roller to rotate and the pawl to rotate away from the roller. Translation of the webbing in the opposite direction causes the pawl to rotate toward the roller and compress the webbing between the lobe of the pawl and the roller. The knurling on the surfaces of the roller and the lobe prevent sliding movement of the webbing therepast. Applying a downward force on an extension of the pawl will cause rotation of the lobe out of contact with the webbing and permit translation of the webbing in either direction.
Description
- The present application claims priority to a provisional patent application entitled “550 CORD P-NUT AND CAMMING UNITS”, assigned Ser. No. 61/680,056 and filed Aug. 6, 2012, which describes an invention made by the present inventor.
- 1. Field of the Invention
- The present invention relates to ratchets and, more particularly, to ratchets having a pawl for securing webbing against a roller.
- 2. Description of Related Prior Art
- Ratchets of various types have been in existence for decades. The most common types of ratchets include a spool about which webbing or a strap is wrapped. A pivotable lever in engagement with sprockets attached to the spool can cause rotation of the spool in a first direction to wrap the webbing about the spool. A pawl or sliding member engages the sprocket to prevent rotation in the second direction whereby unwrapping of the webbing is precluded except upon release of the pawl or sliding member from the sprocket.
- A second type of ratchet is used in conjunction with a rope. It includes a spool formed by a pair of facing discs having protrusions on the facing surfaces of the discs to frictionally engage the rope. The rope is wrapped about one-half of the spool. By pulling on the free end of the rope, the spool is caused to turn in one direction to provide tension to the other end of the rope. Slippage of the other end of the rope in the other direction is precluded by the frictional engagement between the rope and the protrusions of the faces of the disc. A spring-loaded pawl precludes rotation of the spool in the other direction. By pivoting the pawl out of engagement with the spool, the rope is free to cause rotation of the spool in either direction. U.S. Pat. Nos. 6,068,242, 6,092,791, and Des. 362,614 are representative of ratchets of this type and are incorporated herein by reference.
- The major distinction between these two types of spools may be categorized as follows. In the first type, slippage of the webbing from about a rotatably locked spool is prevented by the friction attendant layers of wrapped webbing; in some embodiments, the free end of the webbing extends through a diametrically oriented slot in the spool.
- In the second type of ratchet, the friction between the rope and the protrusions on opposing faces of the discs forming the spool create sufficient friction and compression of the rope therebetween to preclude slippage.
- The present invention is directed to a ratchet for use with webbing. A roller, in the nature of a cylinder, includes either a knurled surface or ridges on the surface for frictionally engaging the webbing partially wrapped thereabout and extending into and out of the body of the ratchet. A pawl includes a corresponding knurled surface or ridges on the surface and is spring biased against the roller. Exerting a tension force on the webbing to be tensioned and exiting from the ratchet will cause the pawl to be pivoted toward the roller and firmly engage the webbing between the roller and the pawl. Such engagement will preclude translation of the webbing due to its frictional engagement with the pawl. Upon pulling the free end of the webbing, the pawl will be pivotally urged away from the roller and the frictional engagement of the webbing with the roller and the pawl will be released and permit the roller to rotate in accordance with the force exerted on the free end of the webbing. A hook or other mechanism may be attached to the ratchet to anchor the ratchet or to engage a member to be drawn toward the ratchet.
- It is therefore a primary object of the present invention to provide a ratchet for use with webbing.
- Another object of the present invention is to provide a low parts count ratchet.
- Still another object of the present invention is to provide a ratchet having essentially only two moving parts for securing webbing.
- Yet another object of the present invention is to provide a ratchet having a pawl for locking webbing against a freely rotatable roller.
- A further object of the present invention is to provide a ratchet with knurled surfaces on a roller and on a pawl.
- A still further object of the present invention is to provide a ratchet having ridges on the surfaces of a roller and a pawl.
- A yet further object of the present invention is to provide a method for applying tension to a length of webbing.
- These and other objects of the present invention will become apparent to those skilled in the art as the description thereof proceeds.
- The present invention will be described with greater specificity and clarity with reference to the following drawings, in which:
-
FIG. 1 is an isometric view of a first embodiment of the present invention; -
FIG. 2 is a side view of the present invention shown inFIG. 1 ; -
FIG. 3 is an exploded view of the major components of the first embodiment; -
FIG. 4 is an exploded view; -
FIG. 5 illustrates a spring coupled with a pawl; -
FIG. 6 is an exploded view; -
FIG. 7 is a partial cross-sectional view of the first embodiment; -
FIG. 8 is an isometric view illustrating a second embodiment of the present invention; -
FIG. 9 is an isometric view illustrating straps attachable and attached to the second embodiment; -
FIG. 10 is an exploded view of the major components of the second embodiment; -
FIG. 11 is an exploded view; -
FIG. 12 is a partial cross-sectional view of the second embodiment; -
FIG. 13 is an isometric view of a third embodiment of the present invention; -
FIG. 14 is an exploded view of the major components of the third embodiment; and -
FIG. 15 is a partial cross-sectional view of the third embodiment. - Referring to
FIG. 1 , there is a first embodiment of aratchet 10 showing a finger operatedpawl 12 cooperating with awebbing supporting roller 14.Sidewalls Bosses Bosses FIG. 2 ,screws sidewall 16 into threaded engagement with corresponding bosses extending fromsidewall 18. Apassageway 34 disposed insidewall 16 supports a stud extending frompawl 12. - Referring to
FIG. 3 , further details of the components ofratchet 10 will be described. Sidewalls 16 and 18further support bosses support roller 14.Roller 14 includesknurling 40 to minimize slippage of a length of webbing partially wrapped thereabout; alternatively, it may includes a plurality of longitudinally aligned ridges to assist in gripping the webbing.Pawl 12, as also shown inFIG. 5 , includes alobe 42 for engagingroller 14 with greater or lesser force as a function of the rotational position of the pawl.Stud 44 is supported withinpassageway 34 ofsidewall 16 to accommodate incremental rotation of the pawl.Knurling 40 may be replaced by a plurality of longitudinally aligned ridges to more firmly engage webbing in contact therewith (note for example the ridges on the pawl shown inFIG. 7 ). Aspring 46 includes anarm 48 in penetrable engagement withpassageway 50 shown insidewall 16 to anchor the spring. It is noted that coil 52 is disposed aboutstud 44.Arm 54 of the coil spring bears againstledge 56 ofpawl 12. Thereby, the spring rotationally biases pawl 12 againstroller 14 to secure webbing therebetween. -
FIG. 4 is a top exploded view ofratchet 10. Referring jointly toFIGS. 3 and 4 , a bolt or screw 58 extends through apassageway 60 inboss 36 into threaded engagement with a passageway 62 inboss 38. A bolt or screw 64 extends through apassageway 66 inboss 24 into threaded engagement with passageway 68 inboss 26. A bolt or screw 70 extends throughpassageway 72 inboss 20 into threaded engagement with passageway 74 inboss 22. As noted above,roller 14 is rotatably supported uponbosses Pawl 12 is pivotally supported uponstud 44 engagingpassageway 34 insidewall 16. Afurther stud 76 is pivotally supported inpassageway 78 insidewall 18. -
FIG. 6 is an explodedview illustrating spring 46 supported uponstud 44 witharm 54 in engagement withledge 56.Knurling 43 is disposed uponlobe 42 ofpawl 12 andsimilar knurling 40 is disposed uponroller 14. - Referring to
FIG. 7 , there is depicted the function ofratchet 10 in cooperation with a length ofwebbing 80. The webbing extends partially aboutroller 14 in frictional engagement withknurling 40 disposed upon the roller. The arrow in combination with the letter F identifies the free end ofwebbing 80 which is pulled to cause tension on the other length of webbing, depicted by the arrow and the letter T. Thereby, the webbing can be tensioned.Pawl 12 includeslobe 42 configured such that upon clockwise movement of the pawl aboutstud 44,surface 82 of the lobe bears againstwebbing 80. As depicted in previous figures, the lobe may include knurling or the lobe may include a plurality of longitudinally alignedridges 84, as depicted inFIG. 7 . It may be noted thatspring 46 biases pawl 12 in the clockwise direction, as shown inFIG. 7 . Thereby, frictional engagement ofwebbing 80 is created by bothroller 14 and the lobe ofpawl 12 to prevent slippage of the webbing. - Upon counterclockwise movement of the pawl by pressing
arm extension 86surface 82 oflobe 42 becomes displaced fromadjacent webbing 80 due to the shape oflobe 42 and the webbing becomes no longer locked withinratchet 10. - One purpose for
bosses FIG. 12 , webbing assembly 90 includesloops further loop 96 extends into the ratchet and wraps aboutbosses FIG. 3 . Thereby,loop 92 may be engaged with anchoring webbing extending frombosses loop 92. Similarly, webbing identified with the letter T inFIG. 7 may be looped about an item of interest and doubled back upon itself into engagement withloop 94. Thereby, the tension force that can be applied byratchet 10 is essentially doubled. - Referring to
FIGS. 8 and 9 , there is shown a second embodiment of the ratchet designated asratchet 100. The ratchet includes a pair ofsidewalls pawl 106 and aroller 108. Astrap 110 extends fromratchet 100 to an anchor or the like. Alternatively, the strap may be doubled about an anchor and connected toloop 112. Webbing 114 is connected to an item of interest and serves as the tensioning member to apply tension to the item of interest and draw it toward an anchor. Webbing 114 extends aboutroller 108 and provides afree end 116. Webbing 114 may extend about an element of an item of interest and folded back upon itself for connection toloop 118. By foldingstrap 110 about itself and connecting it toloop 112, the strength of the connection to an anchor is essentially doubled. Similarly, by foldingwebbing 114 about itself and connecting it toloop 118, its strength is essentially doubled. Asloop 112 andloop 118 are essentially connected to one another, as depicted inFIG. 12 , essentially no additional force is imposed uponratchet 100 sinceloop 96, engagingbosses - Referring jointly to
FIGS. 10 and 11 , certain features internal to ratchet 100 will be described. Aboss 120 extends fromsidewall 104 and butts againstboss 122 extending fromsidewall 102. A bolt or screw 124 extends throughpassageway 126 inboss 120 into threaded engagement with acorresponding passageway 128 inboss 122. A bolt or screw 130 extends throughpassageway 132 inboss 134 extending fromsidewall 102 into threaded engagement withpassageway 136 inboss 138. A further bolt or screw 140 extends throughpassageway 142 inboss 144 extending fromsidewall 104 into threaded engagement withpassageway 146 inboss 148.Pawl 106 includesstud 150 secured withinpassageway 152 insidewall 102 and astud 154 secured withinpassageway 156 insidewall 104. Thereby, the pawl is pivotally supportedintermediate sidewalls Roller 158 is rotatably supported uponbosses spring 162 may be mounted onstud 154 and includes anarm 164 in engagement withpassageway 166 insidewall 104 to anchor that arm. Afurther arm 168 is in engagement with pawl 106 (as depicted inFIG. 12 ) to bias the pawl in the clockwise direction, as shown inFIG. 12 . As depicted, the surface ofroller 158 may includeknurling 160. As depicted inFIGS. 11 and 12 ,knurling 176 is formed onlobe 172 ofpawl 106 to frictionally engage withwebbing 114/116. - As primarily depicted in
FIGS. 10 and 11 , aguide 170 is locatedintermediate sidewalls free end 116 of webbing intoratchet 100 and aboutroller 158 andpast lobe 172 ofpawl 106 when the pawl is rotated in the counterclockwise direction by pressing onextension 174 of the pawl. Upon such insertion, thefree end 116 ofwebbing 114 is pulled until webbing 114 is tightened to provide a degree of tension force (depicted by the letter T) on the webbing to secure the item of interest.Spring 162 urges rotation ofpawl 106 in the clockwise direction. This brings knurling 160 disposed onlobe 172 into frictional engagement withwebbing 114. It may be noted that the tension force on webbing 114 will tend to draw the webbing against the knurling of the pawl to urge the pawl to rotate in a clockwise direction. Because oflobe 172, such urged rotation will further forceknurling 176 into contact withwebbing 114 and the resulting compression of the webbing will cause it to further engageknurling 160 disposed onroller 158. As discussed above, webbing assembly 90 may be used to double the force exerted onstrap 110 engaged about an anchor and folded upon itself into engagement withloop 92. Similarly, webbing 114 can be folded about itself and around an item of interest into engagement withloop 94. As the opposing forces exerted onloops ratchet 100. - Referring jointly to
FIGS. 13 , 14 and 15, a third embodiment of aratchet 180 is illustrated.Ratchet 180 is formed bysidewalls pawl 186 and various other elements to be described below. Aboss 188 extends fromsidewall 182 and includes apassageway 190. It mates with aboss 192 extending fromsidewall 184. A bolt or screw 194 extends throughpassageway 190 into threaded engagement withpassageway 196 inboss 192. Aboss 198 having apassageway 200 extending therethrough mates with a boss extending fromsidewall 184. A bolt or screw 204 extends throughpassageway 200 into threaded engagement withpassageway 206 inboss 202. Aboss 208 having apassageway 210 extends fromsidewall 182 to mate with aboss 212 extending fromsidewall 184. A bolt or screw 214 extends throughpassageway 210 into threaded engagement withpassageway 216 inboss 212. A boss 218 having a passageway 220 extends fromsidewall 182 and mates with aboss 222 extending fromsidewall 184. A bolt or screw 224 extends through passageway 220 into threaded engagement with apassageway 226 inboss 222. Thereby, the sidewalls are secured to one another and support for various components within the ratchet is provided. -
Pawl 186 includes a stud 228 for engagement with apassageway 230 insidewall 184. Asimilar stud 232 engagespassageway 234 insidewall 182. Thereby, pivotal movement of the pawl can occur about the axis ofstuds 228 and 232. Aspring 234 is mounted onstud 232.Arm 236 of the spring is anchored in hole orpassageway 237 insidewall 182.Arm 238 of the spring engages a hole orpassageway 239 in the pawl, as particularly shown inFIG. 15 . Thereby, the pawl is biased in the clockwise direction, as shown inFIG. 15 .Bosses support roller 235.Roller 235 shown inFIG. 14 is depicted to includeknurling 264. However, it may include ridges instead, as shown forroller 240.Boss 198 and its mating boss extending fromsidewall 184 supportsroller 240. This roller may include a plurality of longitudinally alignedridges 242. Each of these ridges includes a radially alignedsurface 244.Pawl 186 includes a plurality of teeth or ridges 243 for engagement withridges 242 ofroller 240. - Webbing 246 is inserted into
ratchet 180 either overbosses roller 235 and downwardly therefrom. Upon such downward movement, the webbing is guided aboutroller 240 byguide 248. By depressingextension 249 ofpawl 186, the pawl is pivoted out of engagement withroller 240 to provide passage of the webbing between this roller andridges 242 of the pawl. Webbing 246 is drawn out of the ratchet, as depicted. The free end of the webbing, as depicted by the letter F and accompanying arrow, is pulled until the length of webbing depicted by the letter T and the accompanying arrow has been tightened with respect to the item of interest attached to the webbing. Upon a continuing pulling force onwebbing 246, as depicted by the accompanying arrow, the webbing is drawn into the ratchet, as depicted by the arrow and letter T. Reverse translation of the webbing is precluded byridges 242 of the pawl being biased toward the webbing and the mechanical interaction of these ridges to prevent counterclockwise rotation ofroller 240. - Webbing 250 includes a
loop 252 partially encirclingbosses loop 254. Similarly, the length of webbing identified by the letter T may extend about the item of interest and folded upon itself for engagement withloop 256. Asloops webbing 258. Afurther loop 260 extends intoratchet 180 and receives support frombosses 218, 222. Because the loads imposed uponloops bosses 218, 222 and these bosses serve primarily a function of supportingwebbing 258adjacent ratchet 180.
Claims (19)
1. A ratchet for use with a length of webbing, said ratchet comprising:
(a) a pair of sidewalls for supporting a plurality of pairs of bosses therebetween;
(b) a first pair of bosses of said plurality of pairs of bosses;
(c) a second pair of bosses of said plurality of pairs of bosses for rotatably supporting a roller;
(d) a pawl rotatably mounted intermediate said pair of sidewalls and including a stud engaging a passageway in each sidewall of said pair of sidewalls;
(e) an opening disposed intermediate said pair of sidewalls proximate said second roller for ingress and egress of the webbing; and
(f) a guide for guiding a free end of the webbing from said opening past said first pair of bosses, between said first pair of bosses and said roller, about a part of said roller and between said pawl and said roller whereafter the free end of the webbing exits through said opening.
2. The ratchet as set forth in claim 1 wherein said roller includes knurling and wherein said pawl includes a lobe having knurling.
3. The ratchet as set forth in claim 2 including a spring for biasing said lobe toward said roller.
4. The ratchet as set forth in claim 1 wherein said roller includes ridges and wherein said lobe includes teeth.
5. The ratchet as set forth in claim 4 wherein one surface of each of said ridge is radially aligned.
6. The ratchet as set forth in claim 1 including a double loop extending from said ratchet.
7. The ratchet as set forth in claim 6 including a further pair of bosses for supporting said double loop.
8. A ratchet for use with a length of webbing having a free end and a working end, said ratchet comprising:
(a) a pair of sidewalls for supporting a plurality of pairs of bosses therebetween;
(b) a first pair of bosses of said plurality of bosses for rotatably supporting a roller;
(c) a pawl having a pair of studs extending in opposed direction for rotatably engaging said pair of sidewalls;
(d) a second pair of bosses of said plurality of bosses for supporting a loop of a further length of webbing;
(e) said roller including knurling disposed about its cylindrical surface for mechanically interacting with the webbing in contact with said roller;
(f) said pawl including knurling disposed on a curved surface of a lobe for mechanically interacting with the webbing in contact with said curved surface upon exertion of a tension force on the working end of the webbing; and
(g) a thumb knob for rotating said pawl away from said roller to release the webbing from between said roller and said pawl.
9. The ratchet as set forth in claim 8 including a spring for biasing said pawl toward said roller.
10. The ratchet as set forth in claim 8 including a spring for urging said lobe into contact with said roller.
11. The ratchet as set forth in claim 8 including an extension of said pawl for manually rotating said pawl to bring about disengagement of said lobe with said roller.
12. The ratchet as set forth in claim 8 including a further pair of bosses of said plurality of pairs of bosses for supporting a double loop webbing.
13. A ratchet for use with a length of webbing, said ratchet comprising:
(a) a pair of sidewalls for supporting a plurality of pairs of bosses therebetween;
(b) a first pair of bosses of said plurality of pairs of bosses for rotatably supporting a roller;
(c) a pawl rotatably mounted intermediate said pair of sidewalls and including a stud engaging a passageway in each sidewall of said pair of sidewalls;
(d) an opening disposed intermediate said pair of sidewalls proximate said roller for ingress and egress of the webbing; and
(e) a guide for guiding a free end of the webbing from said opening about a part of said roller and between said pawl and said roller whereafter the free end of the webbing exits through said opening.
14. The ratchet as set forth in claim 13 wherein said roller includes knurling and wherein said pawl includes a lobe having knurling.
15. The ratchet as set forth in claim 14 including a spring for biasing said lobe toward said roller.
16. The ratchet as set forth in claim 13 wherein said roller includes ridges and wherein said lobe includes teeth.
17. The ratchet as set forth in claim 16 wherein one surface of each of said ridges is radially aligned.
18. The ratchet as set forth in claim 13 including a double loop extending from said ratchet.
19. The ratchet as set forth in claim 18 including a further pair of bosses of said plurality of bosses for supporting said double loop.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/960,120 US20140033485A1 (en) | 2012-08-06 | 2013-08-06 | Webbing tie down with friction roller |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261680056P | 2012-08-06 | 2012-08-06 | |
US13/960,120 US20140033485A1 (en) | 2012-08-06 | 2013-08-06 | Webbing tie down with friction roller |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140033485A1 true US20140033485A1 (en) | 2014-02-06 |
Family
ID=50024042
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US13/953,283 Active 2033-11-14 US9770071B2 (en) | 2012-08-06 | 2013-07-29 | Parachute cord tie down |
US13/960,120 Abandoned US20140033485A1 (en) | 2012-08-06 | 2013-08-06 | Webbing tie down with friction roller |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US13/953,283 Active 2033-11-14 US9770071B2 (en) | 2012-08-06 | 2013-07-29 | Parachute cord tie down |
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US (2) | US9770071B2 (en) |
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US20150113710A1 (en) * | 2013-10-24 | 2015-04-30 | Bell Sports, Inc. | Self-Actuating Webbing Adjuster and Helmet Strap System Including Same |
US9643568B2 (en) | 2014-12-04 | 2017-05-09 | Ford Global Technologies, Llc | Seat belt retractor including pretensioner and slack remover |
US10849389B1 (en) * | 2018-02-15 | 2020-12-01 | Kamiko L. Darrow | Device for assisting lace tightening |
US20220055522A1 (en) * | 2020-08-18 | 2022-02-24 | Nicholas Deplaris | Locking mechanism for tie down locking device |
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US10227030B2 (en) * | 2015-06-01 | 2019-03-12 | Kenneth G. Kingery | Ratchet configurations |
US10221918B2 (en) * | 2015-06-27 | 2019-03-05 | Dark Canyon, Inc. | Rope tension device and method thereof |
TWM521595U (en) * | 2015-11-16 | 2016-05-11 | yi-shun Shi | Device for immediately locking and releasing a rope without pressing a switch |
US9796322B1 (en) * | 2016-12-29 | 2017-10-24 | Ronald Miller | Quick connect tie down system |
CN112809623A (en) * | 2019-11-15 | 2021-05-18 | 美国产品集团公司 | Multi-function tool assembly with load tension assembly |
US11897621B2 (en) * | 2022-02-01 | 2024-02-13 | Justin Beaurivage | Device to detect deployment of a parachute |
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Also Published As
Publication number | Publication date |
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US9770071B2 (en) | 2017-09-26 |
US20140034888A1 (en) | 2014-02-06 |
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Legal Events
Date | Code | Title | Description |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |