CA1158283A - Truck cap elevator assembly - Google Patents
Truck cap elevator assemblyInfo
- Publication number
- CA1158283A CA1158283A CA000365795A CA365795A CA1158283A CA 1158283 A CA1158283 A CA 1158283A CA 000365795 A CA000365795 A CA 000365795A CA 365795 A CA365795 A CA 365795A CA 1158283 A CA1158283 A CA 1158283A
- Authority
- CA
- Canada
- Prior art keywords
- guide means
- extending
- invention according
- actuating rod
- control arms
- 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.)
- Expired
Links
- 230000000712 assembly Effects 0.000 claims abstract description 27
- 238000000429 assembly Methods 0.000 claims abstract description 27
- 238000010010 raising Methods 0.000 claims abstract description 6
- 230000000875 corresponding effect Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims 2
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 241001131688 Coracias garrulus Species 0.000 description 15
- 230000007246 mechanism Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
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
- B60J7/02—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of sliding type, e.g. comprising guide shoes
- B60J7/04—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of sliding type, e.g. comprising guide shoes with rigid plate-like element or elements, e.g. open roofs with harmonica-type folding rigid panels
- B60J7/041—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of sliding type, e.g. comprising guide shoes with rigid plate-like element or elements, e.g. open roofs with harmonica-type folding rigid panels for utility vehicles, e.g. with slidable and foldable rigid panels
- B60J7/042—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of sliding type, e.g. comprising guide shoes with rigid plate-like element or elements, e.g. open roofs with harmonica-type folding rigid panels for utility vehicles, e.g. with slidable and foldable rigid panels with a vertical lifting or folding movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/04—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Handcart (AREA)
Abstract
"TRUCK CAP ELEVATOR ASSEMBLY"
ABSTRACT OF THE DISCLOSURE
The elevator assembly consists of four vertical supports bolted to the truck floor with a control arm pivot-ed to each by one end thereof. A transverse guide channel is situated between each pair of support arms with a roller assembly connecting the upper end of each control arm with-in the channel. A longitudinally extending stabilizing channel extends between the upper ends of each side pair of guide channels and the guide channels carry a left and a righthand threaded actuator screw driven by a source of power. The actuator screws screw threadably engage within nuts in the roller assemblies so that rotation of the con-trol screws move the assemblies towards and away from one another thereby lowering and raising the upper frame which supports the truck cap. An equalizer arm extends between intermediate the ends of the control arm and the outer ends of the corresponding guide channels for stability.
ABSTRACT OF THE DISCLOSURE
The elevator assembly consists of four vertical supports bolted to the truck floor with a control arm pivot-ed to each by one end thereof. A transverse guide channel is situated between each pair of support arms with a roller assembly connecting the upper end of each control arm with-in the channel. A longitudinally extending stabilizing channel extends between the upper ends of each side pair of guide channels and the guide channels carry a left and a righthand threaded actuator screw driven by a source of power. The actuator screws screw threadably engage within nuts in the roller assemblies so that rotation of the con-trol screws move the assemblies towards and away from one another thereby lowering and raising the upper frame which supports the truck cap. An equalizer arm extends between intermediate the ends of the control arm and the outer ends of the corresponding guide channels for stability.
Description
1~58~83 TRUCK CAP ELEVATOR ASSEMBLY
BACKGROUND OF THE INVENTION
This invention relates to new and useful improve-ments in elevator assemblies for truck caps or pick-up covers which conventionally are formed from fibreglass and can be raised and lowered relative to the open upper side of a truck body by various means.
Conventionally, said means may include a scissor action as exemplified, for example, in U.S. Patent 3765716, vertically situated elevators as shown in U.S. Patent 3360294, 3674305, 3675967 and 3053563.
One of the disadvantages of the scissor type ele-vator assembly as illustrated in U.S. Patent 3765716, is the relative instability provided when the cap is in the upper-most or raised position making it extremely difficult to drive -the truck with the cap in the raised position, without damage occurring to the mechanism. ``~
A similar fault is present in man~ of the vertical elevator systems and where these are of sufficient strength, the structure has to be relatively rugged which adds consi-clerable additional wei~ht to the truck as well as increasing the e~pense of manufacture and maintenance.
1~5~2~3 SUMMARY OF THE INVENTION
The present invention overcomes these disadvan-tages by providing a relatively simple lowering and rais-ing mechanism which is extremely stable when in the raised position yet which, at the same time, may be manufactured from relatively lightweight material.
In accordance with the invention there is pro-vided a truck cap elevator assembly for use with a substan-tially rectangular truck cap for truck boxes which include a floor and a pair of vertically spaced and parallel side walls; said truck cap elevator assembly comprising in com-- -bination two pairs of support means securable to the fl.oor of the truck box including a front pair and a rear pair, a control arm for each support means pivotally secured by one end thereof to said support means at the upper ends thereof, ; :a common guide means extending transversely between the : other ends of the control arms connected to said front pair of said support means and a further common guide means extending between the other ends of the control arms con-nected to said rear pair of support means, means on theupper ends of said control arms in s]iding engagement with said respective guide means for movement towards and away from the center of said guide means, means operatively con-nected to said means on the upper ends of said control arms ~ 1582~3 to move said upper ends towards and away from the center of said guide means hence lowering and raising said guide means respectively, longitudinally extending means extend-ing between the outer ends of said front and rear guide means on each side of said truck body to stabilize said assembly, a source of power to operate said means operati-vely connected to said means on the upper ends of said con-trol arms, a first rigid equalizer arm pivotally connected by one end thereof to between the ends of at least one arm of said front pair of control arms and by the other end thereof to adjacent the outer end of the corresponding guide means, and a second rigid equalizer arm pivotally connected by one end thereof to between the ends of at least one arm of said rear pair of control arms and by the other end thereof to adjacent the outer end of the corres-ponding guide means.
Another advantage of the present invention may include adjustable stop means to limit the uppermost travel of the truck cap when raising same.
A still further advantage of the invention is that it is simple in construction, economical in manufac-ture and otherwise well suited to the purpose for which it is designed.
With the foregoing in view, and other advantages
BACKGROUND OF THE INVENTION
This invention relates to new and useful improve-ments in elevator assemblies for truck caps or pick-up covers which conventionally are formed from fibreglass and can be raised and lowered relative to the open upper side of a truck body by various means.
Conventionally, said means may include a scissor action as exemplified, for example, in U.S. Patent 3765716, vertically situated elevators as shown in U.S. Patent 3360294, 3674305, 3675967 and 3053563.
One of the disadvantages of the scissor type ele-vator assembly as illustrated in U.S. Patent 3765716, is the relative instability provided when the cap is in the upper-most or raised position making it extremely difficult to drive -the truck with the cap in the raised position, without damage occurring to the mechanism. ``~
A similar fault is present in man~ of the vertical elevator systems and where these are of sufficient strength, the structure has to be relatively rugged which adds consi-clerable additional wei~ht to the truck as well as increasing the e~pense of manufacture and maintenance.
1~5~2~3 SUMMARY OF THE INVENTION
The present invention overcomes these disadvan-tages by providing a relatively simple lowering and rais-ing mechanism which is extremely stable when in the raised position yet which, at the same time, may be manufactured from relatively lightweight material.
In accordance with the invention there is pro-vided a truck cap elevator assembly for use with a substan-tially rectangular truck cap for truck boxes which include a floor and a pair of vertically spaced and parallel side walls; said truck cap elevator assembly comprising in com-- -bination two pairs of support means securable to the fl.oor of the truck box including a front pair and a rear pair, a control arm for each support means pivotally secured by one end thereof to said support means at the upper ends thereof, ; :a common guide means extending transversely between the : other ends of the control arms connected to said front pair of said support means and a further common guide means extending between the other ends of the control arms con-nected to said rear pair of support means, means on theupper ends of said control arms in s]iding engagement with said respective guide means for movement towards and away from the center of said guide means, means operatively con-nected to said means on the upper ends of said control arms ~ 1582~3 to move said upper ends towards and away from the center of said guide means hence lowering and raising said guide means respectively, longitudinally extending means extend-ing between the outer ends of said front and rear guide means on each side of said truck body to stabilize said assembly, a source of power to operate said means operati-vely connected to said means on the upper ends of said con-trol arms, a first rigid equalizer arm pivotally connected by one end thereof to between the ends of at least one arm of said front pair of control arms and by the other end thereof to adjacent the outer end of the corresponding guide means, and a second rigid equalizer arm pivotally connected by one end thereof to between the ends of at least one arm of said rear pair of control arms and by the other end thereof to adjacent the outer end of the corres-ponding guide means.
Another advantage of the present invention may include adjustable stop means to limit the uppermost travel of the truck cap when raising same.
A still further advantage of the invention is that it is simple in construction, economical in manufac-ture and otherwise well suited to the purpose for which it is designed.
With the foregoing in view, and other advantages
2~3 as will become apparent to those skilled in the art to which this invention relates as this specification proceeds, the :~
: :
:
, .....
1158~3 invention is herein described by reference to the accompany~
ing drawings forming a part hereof, which includes a des-cription of the preferred typical embodimen-t of the princi-ples of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
. . .
Figure 1 is an end view of the mechanism shown in the raised position with the truck sides and floor being shown in phantom.
Figure 2 is a view similar to Figure 1, but show-ing the mechanism in the lowermost position.
Figure 3 is a side elevation of Figure 1.
Figure 4 is a side ele~ation of Figure 2.
~igure 5 is a top plan view of the elevator with one actuating screw being shown separated from the guide channel.
Figure 6 is an enlarged end view of one of the guide channels with the roller assembly therein.
Figure 7 is a fragmentary side elevation of one of the roller assemblies pér se.
In the drawings like characters of reference indi-cate corresponding parts in the different figures.
ETAILED DESCRIPTION
Proceedin~ therefore to describe the invention in detail, reference should first be made to Figures 1 and 2 ~5~2~3 in which 10 illustrates the floor or base of the truck body and 11, the spaced and parallel side walls thereof.
The elevating assembly collectively designated 12 comprises four support members collectively designated 13, one adjacent each corner of the truck body floor, each sup-port member comprising a vertically situated channel 14 with a base plate 15 welded thereto and extending therefrom which may be bolted to the floor 10 by means of bolts 15A.
A control arm collectively designated 16 is pivot-ally connected by the lower end thereof within each channel 14 by means of a pivot pin 17 and extends upwardly and in-wardly from each of the supports 14. These control arms may be formed from channel, angle iron or any other con-venient cross sectional configuration.
A roller assembly (see Figures 6 and 7) co]lec-tively designated 18A is situated on the upper end of each of the control arms 16 by means of a pivot pin 17A and eacn of these roller assemblies is slidably engageable within a transversely situated guide channel collectively designated 18, .LLere ~eing a front gui~e cnannel .o. -ne -~ront pair of control arm and roller assemblies and a rear guide channel for the rear pair of control arm and roller assemblies.
'IL.e guide channels 18 take the form of channel track members comprising a horizontal transversely extending , ~ 15~3 upper plate or wall 19, spaced and parallel vertical side walls 20 and in-turned spaced and parallel, substantially horizontal flanges 21 on the lower sides of the side walls 20, said flanges defining a slot 22A therebetween which ex-tends the full length of the guide channels.
The xoller assemblies 18A each consist of a pair of side plates 22 extending downwardly from the relatively short length of squaxe cross sectioned tubing 23 and ~eing secured thereto as by welding or the like. A pair of rol-ler shafts 24 extend through the tubing 23 and through the side plates 22 extending upon either side thereof, each shaft supporting for rotation, a roller 25 on each end there-o~ so that two pairs of rollers are provided as clearly shown in the drawings. These rollers may be maintained on the ends of the shaft by means of cotter pins 26 in the usual manner, and they are designed to roll upon the upper surfaces 21A of the flanges 21 of the channel track member 18.
The side plates 22 extend downwardly through slots 22A and are provided with the aforementioned pivot pins 17 connecting the roller assemblies to the upper end of the control arms 16. In some of the attached claims, the chan-nel 23 together with the side plates 22 form part of what is described as a mounting component~
1~582~
Longitudinally extending stabilizing members 27 are secured as by welding or other conventional means, bet-ween the ends of the front and rear channel track members on each side thus defining a substantially rectangular frame shown in Figure 5 and a conventional truck cap illus-trated in phantom by reference character 28, is secured to this rectangular frame by any convenient means ~not illus_ trated)O It is desirable that a flexible seal 29 be pro-wided around the perimeter of the lower edge of the walls ~-of the cap 28 engageable upon the upper sides 29 of the truck body when in the lowermost position, to provide an efficient seal.
Means are provided to move the roller assemblies towards one another in the channel track members thus lower~
ing the assembly to the position shown in Figure 2 and to move them apart from one another thus raising the assembly as shown in Figure 1. In this embodiment, a screw threaded actuating screw 3~ is provided within each of the channel track members and supported therein by means of pillow block bearings 31 adjacent each end of the screw, secured within the channel track members. The screw is provided with left and right handed threaded portions 32 on opposite ends of the screw, said threads being preferably acme type threads and each threaded end.portion of the rods screw ': `
2~
threadably engages a screw threaded block 33 secured be-t-ween the side plates or straps 22 of the mounting component of the roller assembly. These blocks may be secured by bolts (not illustrated) or welding or other conventional means.
This means that as the actuating screws are rota-ted in one direction, the roller assemblies are moved to-wards one another along the channel track member and when rotated in the opposite direction, the roller assemblies are moved apart from one another along the channel track membersO
Means are provided to rotate the front and rear actuating screws in directions which t~ill mo~e the roller assemblies of each guide channel in the same direction.
One such means is illustrated in Figures 3 and 4 and con-sists of an electric motor 34 supported within a bracket assembly 35 which in turn depends dcwnwardly from one of the longitudinal stabilizer members 27, being situated ap-proximately midway between the ends thereof. This motor is operati~ely connected to the battery of the truck (not illustrated~ and actuated by means o~ a switch within the cab so that it can be rotated in either direction as desi-red.
A double chain sprocket 36 is secured to the drive shaft 37 of the motor and sprocket chains 38 extend around each of the sprockets and around a drive sprocket 39 secu-red adjacen~ one end of each of the actuating screws 30 so that these screws rotate in a direction which, in conjunc-tion with the threaded actua-ting rods, moves the roller as-semblies in the reguired directions relative to one ano-ther.
Adjustable stops 40 or the equivalent may be situated upon the control arms and cooperate with the sup-ports 14 to limit the upward and outward movement of the control arms as shown in Figure 1.
An equalizer arm 41 is pivotally connected inter-mediate the ends of the control arms 16 on one side of the elevating assembly and by the other end thereof to brackets 42 secured to the underside of acljacent the ends 43 of the channel track members, reference character 44 showing the pivot pins of the lower ends of the arms 41 and 45 showing the pivot pins at the other ends thereof. It is normal that two such equalizer arms be provided although of course they can be provided on all of the control arms if desired. The relationship of these equalizer arms with the control arm is such that the movement of the various parts is not res-tricted. These equalizer arms provide considerable sta~ili-ty to the entire elevating structure, particularly when in the uppermost position as well as facilitating the movement ~82~3 of the various components relative to one ano-ther.
Since various modifications can be made in my in-vention as hereinabove described, and many apparently wide-ly different embodiments of same made within the spirit and scope of the claims without departing from such spirit and scope, it is intended that all matter contained in the ac-companying specification shall be interpreted as illustra-tive only and not in a limitiny sense.
: :
:
, .....
1158~3 invention is herein described by reference to the accompany~
ing drawings forming a part hereof, which includes a des-cription of the preferred typical embodimen-t of the princi-ples of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
. . .
Figure 1 is an end view of the mechanism shown in the raised position with the truck sides and floor being shown in phantom.
Figure 2 is a view similar to Figure 1, but show-ing the mechanism in the lowermost position.
Figure 3 is a side elevation of Figure 1.
Figure 4 is a side ele~ation of Figure 2.
~igure 5 is a top plan view of the elevator with one actuating screw being shown separated from the guide channel.
Figure 6 is an enlarged end view of one of the guide channels with the roller assembly therein.
Figure 7 is a fragmentary side elevation of one of the roller assemblies pér se.
In the drawings like characters of reference indi-cate corresponding parts in the different figures.
ETAILED DESCRIPTION
Proceedin~ therefore to describe the invention in detail, reference should first be made to Figures 1 and 2 ~5~2~3 in which 10 illustrates the floor or base of the truck body and 11, the spaced and parallel side walls thereof.
The elevating assembly collectively designated 12 comprises four support members collectively designated 13, one adjacent each corner of the truck body floor, each sup-port member comprising a vertically situated channel 14 with a base plate 15 welded thereto and extending therefrom which may be bolted to the floor 10 by means of bolts 15A.
A control arm collectively designated 16 is pivot-ally connected by the lower end thereof within each channel 14 by means of a pivot pin 17 and extends upwardly and in-wardly from each of the supports 14. These control arms may be formed from channel, angle iron or any other con-venient cross sectional configuration.
A roller assembly (see Figures 6 and 7) co]lec-tively designated 18A is situated on the upper end of each of the control arms 16 by means of a pivot pin 17A and eacn of these roller assemblies is slidably engageable within a transversely situated guide channel collectively designated 18, .LLere ~eing a front gui~e cnannel .o. -ne -~ront pair of control arm and roller assemblies and a rear guide channel for the rear pair of control arm and roller assemblies.
'IL.e guide channels 18 take the form of channel track members comprising a horizontal transversely extending , ~ 15~3 upper plate or wall 19, spaced and parallel vertical side walls 20 and in-turned spaced and parallel, substantially horizontal flanges 21 on the lower sides of the side walls 20, said flanges defining a slot 22A therebetween which ex-tends the full length of the guide channels.
The xoller assemblies 18A each consist of a pair of side plates 22 extending downwardly from the relatively short length of squaxe cross sectioned tubing 23 and ~eing secured thereto as by welding or the like. A pair of rol-ler shafts 24 extend through the tubing 23 and through the side plates 22 extending upon either side thereof, each shaft supporting for rotation, a roller 25 on each end there-o~ so that two pairs of rollers are provided as clearly shown in the drawings. These rollers may be maintained on the ends of the shaft by means of cotter pins 26 in the usual manner, and they are designed to roll upon the upper surfaces 21A of the flanges 21 of the channel track member 18.
The side plates 22 extend downwardly through slots 22A and are provided with the aforementioned pivot pins 17 connecting the roller assemblies to the upper end of the control arms 16. In some of the attached claims, the chan-nel 23 together with the side plates 22 form part of what is described as a mounting component~
1~582~
Longitudinally extending stabilizing members 27 are secured as by welding or other conventional means, bet-ween the ends of the front and rear channel track members on each side thus defining a substantially rectangular frame shown in Figure 5 and a conventional truck cap illus-trated in phantom by reference character 28, is secured to this rectangular frame by any convenient means ~not illus_ trated)O It is desirable that a flexible seal 29 be pro-wided around the perimeter of the lower edge of the walls ~-of the cap 28 engageable upon the upper sides 29 of the truck body when in the lowermost position, to provide an efficient seal.
Means are provided to move the roller assemblies towards one another in the channel track members thus lower~
ing the assembly to the position shown in Figure 2 and to move them apart from one another thus raising the assembly as shown in Figure 1. In this embodiment, a screw threaded actuating screw 3~ is provided within each of the channel track members and supported therein by means of pillow block bearings 31 adjacent each end of the screw, secured within the channel track members. The screw is provided with left and right handed threaded portions 32 on opposite ends of the screw, said threads being preferably acme type threads and each threaded end.portion of the rods screw ': `
2~
threadably engages a screw threaded block 33 secured be-t-ween the side plates or straps 22 of the mounting component of the roller assembly. These blocks may be secured by bolts (not illustrated) or welding or other conventional means.
This means that as the actuating screws are rota-ted in one direction, the roller assemblies are moved to-wards one another along the channel track member and when rotated in the opposite direction, the roller assemblies are moved apart from one another along the channel track membersO
Means are provided to rotate the front and rear actuating screws in directions which t~ill mo~e the roller assemblies of each guide channel in the same direction.
One such means is illustrated in Figures 3 and 4 and con-sists of an electric motor 34 supported within a bracket assembly 35 which in turn depends dcwnwardly from one of the longitudinal stabilizer members 27, being situated ap-proximately midway between the ends thereof. This motor is operati~ely connected to the battery of the truck (not illustrated~ and actuated by means o~ a switch within the cab so that it can be rotated in either direction as desi-red.
A double chain sprocket 36 is secured to the drive shaft 37 of the motor and sprocket chains 38 extend around each of the sprockets and around a drive sprocket 39 secu-red adjacen~ one end of each of the actuating screws 30 so that these screws rotate in a direction which, in conjunc-tion with the threaded actua-ting rods, moves the roller as-semblies in the reguired directions relative to one ano-ther.
Adjustable stops 40 or the equivalent may be situated upon the control arms and cooperate with the sup-ports 14 to limit the upward and outward movement of the control arms as shown in Figure 1.
An equalizer arm 41 is pivotally connected inter-mediate the ends of the control arms 16 on one side of the elevating assembly and by the other end thereof to brackets 42 secured to the underside of acljacent the ends 43 of the channel track members, reference character 44 showing the pivot pins of the lower ends of the arms 41 and 45 showing the pivot pins at the other ends thereof. It is normal that two such equalizer arms be provided although of course they can be provided on all of the control arms if desired. The relationship of these equalizer arms with the control arm is such that the movement of the various parts is not res-tricted. These equalizer arms provide considerable sta~ili-ty to the entire elevating structure, particularly when in the uppermost position as well as facilitating the movement ~82~3 of the various components relative to one ano-ther.
Since various modifications can be made in my in-vention as hereinabove described, and many apparently wide-ly different embodiments of same made within the spirit and scope of the claims without departing from such spirit and scope, it is intended that all matter contained in the ac-companying specification shall be interpreted as illustra-tive only and not in a limitiny sense.
Claims
WHAT I CLAIM AS MY INVENTION IS:
(1) A truck cap elevator assembly for use with a substantially rectangular truck cap for truck boxes which include a floor and a pair of vertically spaced and parallel side walls; said truck cap elevator assembly comprising in combination:
(a) two pairs of support means securable to the floor of the truck box including a front pair and a rear pair, (b) a control arm for each support means pivotal-ly secured by one end thereof to said support means at the upper ends thereof, (c) a common guide means extending transversely between the other ends of the control arms connected to said front pair of said support means and a further common guide means extending between the other ends of the control arms connected to said rear pair of support means, (d) means on the upper ends of said control arms in sliding engagement with said respective guide means for movement towards and away from the center of said guide means, (e) means operatively connected to said means on the upper ends of said control arms to move said upper ends towards and away from the center of said guide means hence lowering and raising said guide means respectively, (f) longitudinally extending means extending between the outer ends of said front and rear guide means on each side of said truck body to stabilize said assembly, (g) a source of power to operate said means operatively connected to said means on the upper ends of said control arms.
(h) a first rigid equalizer arm pivotally con-nected by one end thereof to between the ends of at least one arm of said front pair of control arms and by the other end thereof to adjacent the outer end of the corresponding guide means, and a second rigid equalizer arm pivotally connected by one end thereof to between the ends of at least one arm of said rear pair of control arms and by the other end thereof to adjacent the outer end of the corres-ponding guide means.
(2) The invention according to Claim 1 in which said support means includes a vertically situated, inward-ly facing channel and a base plate on the lower end there-of securable to the floor of the truck box adjacent each corner thereof.
(3) The invention according to Claim 1 in which said guide means each comprises a channel track member in-cluding a pair of spaced and parallel inwardly facing flanges on the other side thereof defining a slot therebet-ween extending from one end of said channel track member to the other end thereof, said means on the upper end of said control arms in sliding engagement with said guide means including a roller assembly within said channel track member extending through said slot and being connec-ted to the upper end of each of said control arms.
(4) The invention according to Claim 2 in which said guide means each comprises a channel track member in-cluding a pair of spaced and parallel inwardly facing flanges on the other side thereof defining a slot therebetween ex-tending from one end of said channel track member to the other end thereof, said means on the upper end of said con-trol arms in sliding engagement with said guide means in-cluding a roller assembly within said channel track member extending through said slot and being connected to the upper end of each of said control arms.
(5) The invention according to Claim 3 in which said roller assembly includes a mounting component, two pairs of rollers journalled for rotation therein, said rollers being in rolling engagement upon the upper sides of said inturned flanges, said mounting component extending downwardly through said slot, said control arms being each pivotally secured to the corresponding mounting component below said slot.
(6) The invention according to Claim 4 in which said roller assembly includes a mounting component, two pairs of rollers journalled for rotation therein, said rollers being in rolling engagement upon the upper sides of said inturned flanges, said mounting component extending downwardly through said slot, said control arms being each pivotally secured to the corresponding mounting component below said slot.
(7) The invention according to Claim 3 in which said means operatively connected to said roller assembly in-cludes a left and a righthanded threaded actuating rod ex-tending along each of said channel track members, means in said channel track members supporting said actuating rod for rotation therein, threaded drive nuts secured in each of said roller assemblies, said actuating rod threadably engaging said drive nuts one by each end thereof whereby rotation of said actuating rod in one direction moves said roller assemblies towards one another and rotation of said actuating rod in the opposite direction, moves said roller assemblies away from one another, said source of power be-ing operatively connected to each of said actuating rods to move the roller assemblies in said front and rear guide means, in the same direction.
(8) The invention according to Claim 4 in which said means operatively connected to said roller assembly in-cludes a left and a righthanded threaded actuating rod ex-tending along each of said channel track members, means in said channel track members supporting said actuating rod for rotation therein, threaded drive nuts secured in each of said roller assemblies, said actuating rod threadably engaging said drive nuts one by each end thereof whereby rotation of said actuating rod in one direction moves said roller assemblies towards one another and rotation of said actuating rod in the opposite direction, moves said roller assemblies away from one another, said source of power be-ing operatively connected to each of said actuating rods to move the roller assemblies in said front and rear guide means, in the same direction.
(9) The invention according to Claim 5 in which said means operatively connected to said roller assembly includes a left and a righthanded threaded actuating rod extending along each of said channel track members, thread-ed drive nuts secured in each of said mounting components, said actuating rod threadably engaging said drive nuts one by each end thereof whereby rotation of said actuating rod in one direction moves said roller assemblies towards one another and rotation of said actuating rod in the opposite direction, moves said roller assemblies away from one another, said source of power being operatively connected to each of said actuating rods to move the roller assemblies in said front and rear guide means, in the same direction.
(10) The invention according to Claim 6 in which said means operatively connected to said roller assembly includes a left and a righthanded threaded actuating rod extending along each of said channel track members, thread-ed drive nuts secured in each of said mounting components, said actuating rod threadably engaging said drive nuts one by each end thereof whereby rotation of said actuating rod in one direction moves said roller assemblies towards one another and rotation of said actuating rod in the opposite direction, moves said roller assemblies away from one another, said source of power being operatively connected to each of said actuating rods to move the roller assemblies in said front and rear guide means, in the same direction.
(11) The invention according to Claims 1, 2 or 3 which includes adjustable stop means operatively extending between said support means and said control arm to limit the upward movement of said control arms.
(12) The invention according to Claims 4, 5 or 6 which includes adjustable stop means operatively extending between said support means and said control arm to limit the upward movement of said control arms.
(13) The invention according to Claims 7, 8 or 9 which includes adjustable stop means operatively extending between said support means and said control arm to limit the upward movement of said control arms.
(14) The invention according to Claim 10 which includes adjustable stop means operatively extending between said support means and said control arm to limit the upward movement of said control arms.
(15) The invention according to Claims 1, 2 or 3 in which said means extending between the outer ends of said front and rear guide means comprises a longitudinally extending member secured by each end thereof to adjacent each end of said guide means on one side and by each end thereof to adjacent each end of said guide means on the other side thereof, the truck cap being securable to said longitudinally extending members and to said guide means.
(16) The invention according to Claims 4, 5 or 6 in which said means extending between the outer ends of said front and rear guide means comprises a longitudinally extending member secured by each end thereof to adjacent each end of said guide means on one side and by each end thereof to adjacent each end of said guide means on the other side thereof, the truck cap being securable to said longitudinally extending members and to said guide means.
(17) The invention according to Claims 7, 8 or 9 in which said means extending between the outer ends of said front and rear guide means comprises a longitudinally extending member secured by each end thereof to adjacent each end of said guide means on one side and by each end thereof to adjacent each end of said guide means on the other side thereof, the truck cap being securable to said longitudinally extending members and to said guide means.
(18) The invention according to Claim 10 in which said means extending between the outer ends of said front and rear guide means comprises a longitudinally extending member secured by each end thereof to adjacent each end of said guide means on one side and by each end thereof to adjacent each end of said guide means on the other side thereof, the truck cap being securable to said longitudinally extending members and to said guide means.
(1) A truck cap elevator assembly for use with a substantially rectangular truck cap for truck boxes which include a floor and a pair of vertically spaced and parallel side walls; said truck cap elevator assembly comprising in combination:
(a) two pairs of support means securable to the floor of the truck box including a front pair and a rear pair, (b) a control arm for each support means pivotal-ly secured by one end thereof to said support means at the upper ends thereof, (c) a common guide means extending transversely between the other ends of the control arms connected to said front pair of said support means and a further common guide means extending between the other ends of the control arms connected to said rear pair of support means, (d) means on the upper ends of said control arms in sliding engagement with said respective guide means for movement towards and away from the center of said guide means, (e) means operatively connected to said means on the upper ends of said control arms to move said upper ends towards and away from the center of said guide means hence lowering and raising said guide means respectively, (f) longitudinally extending means extending between the outer ends of said front and rear guide means on each side of said truck body to stabilize said assembly, (g) a source of power to operate said means operatively connected to said means on the upper ends of said control arms.
(h) a first rigid equalizer arm pivotally con-nected by one end thereof to between the ends of at least one arm of said front pair of control arms and by the other end thereof to adjacent the outer end of the corresponding guide means, and a second rigid equalizer arm pivotally connected by one end thereof to between the ends of at least one arm of said rear pair of control arms and by the other end thereof to adjacent the outer end of the corres-ponding guide means.
(2) The invention according to Claim 1 in which said support means includes a vertically situated, inward-ly facing channel and a base plate on the lower end there-of securable to the floor of the truck box adjacent each corner thereof.
(3) The invention according to Claim 1 in which said guide means each comprises a channel track member in-cluding a pair of spaced and parallel inwardly facing flanges on the other side thereof defining a slot therebet-ween extending from one end of said channel track member to the other end thereof, said means on the upper end of said control arms in sliding engagement with said guide means including a roller assembly within said channel track member extending through said slot and being connec-ted to the upper end of each of said control arms.
(4) The invention according to Claim 2 in which said guide means each comprises a channel track member in-cluding a pair of spaced and parallel inwardly facing flanges on the other side thereof defining a slot therebetween ex-tending from one end of said channel track member to the other end thereof, said means on the upper end of said con-trol arms in sliding engagement with said guide means in-cluding a roller assembly within said channel track member extending through said slot and being connected to the upper end of each of said control arms.
(5) The invention according to Claim 3 in which said roller assembly includes a mounting component, two pairs of rollers journalled for rotation therein, said rollers being in rolling engagement upon the upper sides of said inturned flanges, said mounting component extending downwardly through said slot, said control arms being each pivotally secured to the corresponding mounting component below said slot.
(6) The invention according to Claim 4 in which said roller assembly includes a mounting component, two pairs of rollers journalled for rotation therein, said rollers being in rolling engagement upon the upper sides of said inturned flanges, said mounting component extending downwardly through said slot, said control arms being each pivotally secured to the corresponding mounting component below said slot.
(7) The invention according to Claim 3 in which said means operatively connected to said roller assembly in-cludes a left and a righthanded threaded actuating rod ex-tending along each of said channel track members, means in said channel track members supporting said actuating rod for rotation therein, threaded drive nuts secured in each of said roller assemblies, said actuating rod threadably engaging said drive nuts one by each end thereof whereby rotation of said actuating rod in one direction moves said roller assemblies towards one another and rotation of said actuating rod in the opposite direction, moves said roller assemblies away from one another, said source of power be-ing operatively connected to each of said actuating rods to move the roller assemblies in said front and rear guide means, in the same direction.
(8) The invention according to Claim 4 in which said means operatively connected to said roller assembly in-cludes a left and a righthanded threaded actuating rod ex-tending along each of said channel track members, means in said channel track members supporting said actuating rod for rotation therein, threaded drive nuts secured in each of said roller assemblies, said actuating rod threadably engaging said drive nuts one by each end thereof whereby rotation of said actuating rod in one direction moves said roller assemblies towards one another and rotation of said actuating rod in the opposite direction, moves said roller assemblies away from one another, said source of power be-ing operatively connected to each of said actuating rods to move the roller assemblies in said front and rear guide means, in the same direction.
(9) The invention according to Claim 5 in which said means operatively connected to said roller assembly includes a left and a righthanded threaded actuating rod extending along each of said channel track members, thread-ed drive nuts secured in each of said mounting components, said actuating rod threadably engaging said drive nuts one by each end thereof whereby rotation of said actuating rod in one direction moves said roller assemblies towards one another and rotation of said actuating rod in the opposite direction, moves said roller assemblies away from one another, said source of power being operatively connected to each of said actuating rods to move the roller assemblies in said front and rear guide means, in the same direction.
(10) The invention according to Claim 6 in which said means operatively connected to said roller assembly includes a left and a righthanded threaded actuating rod extending along each of said channel track members, thread-ed drive nuts secured in each of said mounting components, said actuating rod threadably engaging said drive nuts one by each end thereof whereby rotation of said actuating rod in one direction moves said roller assemblies towards one another and rotation of said actuating rod in the opposite direction, moves said roller assemblies away from one another, said source of power being operatively connected to each of said actuating rods to move the roller assemblies in said front and rear guide means, in the same direction.
(11) The invention according to Claims 1, 2 or 3 which includes adjustable stop means operatively extending between said support means and said control arm to limit the upward movement of said control arms.
(12) The invention according to Claims 4, 5 or 6 which includes adjustable stop means operatively extending between said support means and said control arm to limit the upward movement of said control arms.
(13) The invention according to Claims 7, 8 or 9 which includes adjustable stop means operatively extending between said support means and said control arm to limit the upward movement of said control arms.
(14) The invention according to Claim 10 which includes adjustable stop means operatively extending between said support means and said control arm to limit the upward movement of said control arms.
(15) The invention according to Claims 1, 2 or 3 in which said means extending between the outer ends of said front and rear guide means comprises a longitudinally extending member secured by each end thereof to adjacent each end of said guide means on one side and by each end thereof to adjacent each end of said guide means on the other side thereof, the truck cap being securable to said longitudinally extending members and to said guide means.
(16) The invention according to Claims 4, 5 or 6 in which said means extending between the outer ends of said front and rear guide means comprises a longitudinally extending member secured by each end thereof to adjacent each end of said guide means on one side and by each end thereof to adjacent each end of said guide means on the other side thereof, the truck cap being securable to said longitudinally extending members and to said guide means.
(17) The invention according to Claims 7, 8 or 9 in which said means extending between the outer ends of said front and rear guide means comprises a longitudinally extending member secured by each end thereof to adjacent each end of said guide means on one side and by each end thereof to adjacent each end of said guide means on the other side thereof, the truck cap being securable to said longitudinally extending members and to said guide means.
(18) The invention according to Claim 10 in which said means extending between the outer ends of said front and rear guide means comprises a longitudinally extending member secured by each end thereof to adjacent each end of said guide means on one side and by each end thereof to adjacent each end of said guide means on the other side thereof, the truck cap being securable to said longitudinally extending members and to said guide means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000365795A CA1158283A (en) | 1980-11-28 | 1980-11-28 | Truck cap elevator assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000365795A CA1158283A (en) | 1980-11-28 | 1980-11-28 | Truck cap elevator assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1158283A true CA1158283A (en) | 1983-12-06 |
Family
ID=4118590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000365795A Expired CA1158283A (en) | 1980-11-28 | 1980-11-28 | Truck cap elevator assembly |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1158283A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2578494A1 (en) * | 1985-03-08 | 1986-09-12 | Esterel Caravanes Sa | Liftable roof structure for vehicle |
| CN109823152A (en) * | 2019-02-18 | 2019-05-31 | 广东信源物流设备有限公司 | A kind of top open-type cargo transport compartment |
-
1980
- 1980-11-28 CA CA000365795A patent/CA1158283A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2578494A1 (en) * | 1985-03-08 | 1986-09-12 | Esterel Caravanes Sa | Liftable roof structure for vehicle |
| CN109823152A (en) * | 2019-02-18 | 2019-05-31 | 广东信源物流设备有限公司 | A kind of top open-type cargo transport compartment |
| CN109823152B (en) * | 2019-02-18 | 2023-08-29 | 广东信源物流设备有限公司 | Top-opening type cargo transportation carriage |
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| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |