CA1134888A - Cover for dump trucks - Google Patents
Cover for dump trucksInfo
- Publication number
- CA1134888A CA1134888A CA000310874A CA310874A CA1134888A CA 1134888 A CA1134888 A CA 1134888A CA 000310874 A CA000310874 A CA 000310874A CA 310874 A CA310874 A CA 310874A CA 1134888 A CA1134888 A CA 1134888A
- Authority
- CA
- Canada
- Prior art keywords
- lever
- cover
- cover assembly
- cable
- chassis
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J7/00—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs
- B60J7/08—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of non-sliding type, i.e. movable or removable roofs or panels, e.g. let-down tops or roofs capable of being easily detached or of assuming a collapsed or inoperative position
- B60J7/085—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of non-sliding type, i.e. movable or removable roofs or panels, e.g. let-down tops or roofs capable of being easily detached or of assuming a collapsed or inoperative position winding up, e.g. for utility vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A cover assembly for a dump truck comprises a pair of spaced-apart arms extending upwardly at the sides of an open rear body of the truck. A flexible cover is connected to the top of the arms at one end and to the front of the body at the other end. A take up roller is connected to one end of the cover and is resiliently biased to rotate the roller and take up the cover. A mechanism for covering the body is activated by downward movement of the body and comprises a first portion for rotating the arms connected near the bottom end of at least one arm. The mechanism extends to the chassis and cab portion of the truck when the body is in a raised position so that downward movement of the body exerts a force on the first portion of the mecha-nism, rotating the arms towards the back of the body and covering the body with the cover.
A cover assembly for a dump truck comprises a pair of spaced-apart arms extending upwardly at the sides of an open rear body of the truck. A flexible cover is connected to the top of the arms at one end and to the front of the body at the other end. A take up roller is connected to one end of the cover and is resiliently biased to rotate the roller and take up the cover. A mechanism for covering the body is activated by downward movement of the body and comprises a first portion for rotating the arms connected near the bottom end of at least one arm. The mechanism extends to the chassis and cab portion of the truck when the body is in a raised position so that downward movement of the body exerts a force on the first portion of the mecha-nism, rotating the arms towards the back of the body and covering the body with the cover.
Description
il34~8B
This invention relates to a cover assembly for a dump truck.
Covers are frequently required for trucks having open bodies. Such covers protect and retain the material carried in an open body. In some areas, legislation requires such covers. In the past, several different mechanisms have been developed for covering and uncovering truck bodies.
One type of mechanism employs a take up roller for the cover and a pair of arms pivotally mounted on the body and ex-tending up the sides of the body and connected to the cover. The arms pivot towards the back of the body for covering the body and pivot towards the front of the body for uncovering the body. Various means have been provided for powering such mechanisms, for example, manually operated cranks, pneumatic or hydraulic cylinders, electric motors or spring mechanisms.
The present invention provides a cover assembly for a dump truck having a chassis and cab portion and an open rear body with a top, bottom, front, back and sides and pivotally mounted for upward and downward movement on the chassis. The assembly comprises a pair of spaced-apart arms, each arm being to one side of the body, with a bottom end pivotally mounted near the bottom of the body and with a top end above the top of the body. A flexible cover has a first end connected to the top ends of the arms and a second end connected to the front of the body. A laterally extending take up roller is connected to one end of the cover and has resilient means for biasing the roller to rotate and take up the cover. Means activated by downward ~13~888 movement of the body for covering the body comprises a mechanism with a first portion for pivoting the arms con-nected near the bottom end of at least one arm. The mec-hanism extends to the chassis and cab portion of the truck when the body is in a raised position and is adapted so that downward movement of the body exerts a force on the first portion of the mechanism, rotating the arms towards the back of the body and covering the body with the cover.
A cover assembly according to the present in-vention requires neither manual power nor separate meanssuch as fluid cylinders or electric motors to move the spaced apart arms for covering and uncovering the body of the truck. The mechanism is consequently simplified and more economical to produce. The mechanism is also inher-ently rugged and includes a minimum number of parts.
In drawings which illustrate embodiments of theinvention:
Figure 1 is a side elevational view of a dump truck with the chassis partly broken away and including a cover assembly according to the present invention, the truck being shown with the body of the truck uncovered;
Figure 2 is a side elevational view equivalent to Figure 1 with the body slightly raised;
Figure 3 is a side elevational view similar to that of Figure 1 showing the cover assembly with the truck body covered;
Figure 4 is an isometric view of the embodiment of the cover assembly shown in Figure 1 with the truck body shown in phanthom;
~-113488~
Figure 5 is an enlarged isometric view showing the lever for securing the cable of the cover assembly, a portion of the cable and the rod for pivoting the lever; and Figure 6 is a side elevational view of a lever connected to a solenoid according to a second embodiment of the invention.
Figures 1 to 3 illustrate the operation of a cover assembly for a dump truck according to an embodiment of the invention and Figures 4 and 5 illustrate the components of the cover assembly in more detail. In the drawings, the dump truck 2 has a chassis and cab portion 4 and an open rear body 6. The rear body 6 has a top 8, a bottom 10, a front 12, a back 14 and two sides 16 and 18. The body is pivotally mounted on the chassis and cab portion near the back of the chassis 20 for upward and downward movement as illustrated in Figures 1 and 2.
The dump truck 2 is provided with a cover assembly 22. The cover assembly 2~ has a pair of spaced-apart arms 24 and 26. Arms 24 and 26 have bottom ends 28 and 30 respectively connected to a common laterally extending shaft 32. Shaft 32 is pivotally mounted within bearing blocks 34 and 36, both connected to the bottom 10 of body 6 by suit-able means such as bolts or welding. Arms 2~ and 26 exten~
upwardly along sides 16 and 18 of the body 6 respectively to their top ends 38 and 40-respectively located above the top 8 of the body 6. By means of shaft 32 mounted on bearing blocks 34 and 36, arms 24 and 26 are pivotable between a rearward position, as shown in Figures 3 and 4, and a for-ward position, as shown in Figures 1 and 2.
8~8 A Laterally extending take up roller 42 has a central longitudinal shaft 44 connected to top end 38 of arm 24 at one end and to top end 40 of arm 26 at the other end.
A resilient coil spring 46 is located within take up roller 42. A flexible cover 48, of canvas or the like, has a first or back end 50 secured to the take up roller 42 for movement with top ends 38 and 40 of arms 24 and 26 respectively. A
second or front end 52 of the cover 4~ is connected to the upper part of front 12 of body 6.
The cover assembly 22 also includes a mechanism 54 for covering and uncovering the body 6. The mechanism 54 includes a first portion for rotating the arms 24 and 26 comprising shaft 32 and a lever means or quadrant 56. ~, Quadrant 56 is located midway between arms 24 and 26 and is shaped like a quarter portion of a sheave and has an aper-ture 58 tightly fitted over shaft 32 by a keyway, welding or some other suitable means. Quadrant 56 has a curved peri-pheral guide or groove 60 with a back end 62 and a front end 94 extending towards the front 12 of the body 6. Mechanism 54 includes a second portion or cable 64 connected to quadrant 56 adjacent the back end 62 of the peripheral groove 60. Cable 64 is taut and extends forwardly through pipe 65 to a guide means or sheave 66 located at the corner of bottom 10 and front 12 of body 6. Pipe 65 is supported by struts 67 and 69 connected to the bottom 10 of body 6.
Cable 64 has an end 68 distal the quadrant 56 fitted with a stop 70 comprising a sècurable means on cable 64 with a cross sectional extent greater than that of the cable 64.
Although stop 70 could easily take other forms, in the embodiment shown, stop 70 comprises~a cylinder of ,lead ~ -4-~3 3'~88~3 formed on the distal end 68 of the cable 68. A first, nar-rower portion of the cylinder is adjacent the sheave 66 but of such a diameter that it cannot be pulled into sheave 66.
A second wider portion is remote from the sheave 66.
Mechanism 54 also includes a lever 74 pivotally connected to the chassis 20 by means of link pin 76. Lever 74 is T-shaped in section with an upper bifurcated portion 78 and a web 80. Bifurcated portion 78 has a vertical slot 84. Slot 84 comprises securing means on lever 74 near an end 85 of the lever 74 distal the chassis 20. A rod 86 is pivotally connected to lever 74 by clevis 87 and pin 89 and extends into cab 21 of truck 2. A coil spring 88 is located within a slot 90 of web 80 and is compressed between the lever and box section 77. Box section 77 is connected to, and extends laterally across chassis 20.
When the body 6 of the truck 2 is uncovered, the mechanism is normally in the position illustrated in Figure 1. Arms 24 and 26 are pivot~d forwardly about shaft 32 with ; 20 take up roller 42 located adjacent front 12 of the body 6 and with cover 48 wrapped about the take up roller 42. Cable 64 extends about peripheral groove 60 of quadrant 56 from back end 62 to front end 94 and thence forwardly through pipe 65 to sheave 66. Stop 70 rests just in front of sheave 25 66. Lever 74 is pivoted away from body 6 about pin 76.
In order to cover the body, the operatior first raises the body 6 above the chassis 20 a short distance, slightly above the position shown in Figure 2, by the conventional hydraulic cylinders employed on dump trucks.
The end of rod 86 within cab 21 is pushed against the pressure of spring 88 which normally tilts lever 74~towards -11348~8 cab 21. This tilts lever 74 about pin 76 towards back 14 of body 6 until slot 84 is adjacent front 12 and below stop 70.
The operator lowers the body 6 by means of the conventional hydraulic cylinders already mentioned towards the position shown in Figure 3. During the lowering of body 6, stop 70 of cable 64 is held in place by the slot 84 of the lever 74 sliding over the first, narrower portion and abutting the second narrower portion. Since distal end 68 is retained by lever 74 and cannot move downwardly with the body 6, stop 70 ~, exerts a generally upwardly directed force on cable 64 and cable 64 exerts a generally forwardly directed force on quadrant 56. This rotates quadrant 56 about shaft 32 and rotates arms 24 and 26 and moves take up roller 42 towards the back 14 of the body 6. As the take up roller 42 moves rearwardly, cover 48 is unwound from the take up roller 42, covering the body 6.
It should be noted that body 6 is automatically uncovered whenever the body 6 is raised upwardly past the position shown in Figure 2. Spring 46 provides the means : 20 for rotating roller 42 and pivoting the arms 24 and 26.
Whenever body 6 is raised past the position shown in Figure
This invention relates to a cover assembly for a dump truck.
Covers are frequently required for trucks having open bodies. Such covers protect and retain the material carried in an open body. In some areas, legislation requires such covers. In the past, several different mechanisms have been developed for covering and uncovering truck bodies.
One type of mechanism employs a take up roller for the cover and a pair of arms pivotally mounted on the body and ex-tending up the sides of the body and connected to the cover. The arms pivot towards the back of the body for covering the body and pivot towards the front of the body for uncovering the body. Various means have been provided for powering such mechanisms, for example, manually operated cranks, pneumatic or hydraulic cylinders, electric motors or spring mechanisms.
The present invention provides a cover assembly for a dump truck having a chassis and cab portion and an open rear body with a top, bottom, front, back and sides and pivotally mounted for upward and downward movement on the chassis. The assembly comprises a pair of spaced-apart arms, each arm being to one side of the body, with a bottom end pivotally mounted near the bottom of the body and with a top end above the top of the body. A flexible cover has a first end connected to the top ends of the arms and a second end connected to the front of the body. A laterally extending take up roller is connected to one end of the cover and has resilient means for biasing the roller to rotate and take up the cover. Means activated by downward ~13~888 movement of the body for covering the body comprises a mechanism with a first portion for pivoting the arms con-nected near the bottom end of at least one arm. The mec-hanism extends to the chassis and cab portion of the truck when the body is in a raised position and is adapted so that downward movement of the body exerts a force on the first portion of the mechanism, rotating the arms towards the back of the body and covering the body with the cover.
A cover assembly according to the present in-vention requires neither manual power nor separate meanssuch as fluid cylinders or electric motors to move the spaced apart arms for covering and uncovering the body of the truck. The mechanism is consequently simplified and more economical to produce. The mechanism is also inher-ently rugged and includes a minimum number of parts.
In drawings which illustrate embodiments of theinvention:
Figure 1 is a side elevational view of a dump truck with the chassis partly broken away and including a cover assembly according to the present invention, the truck being shown with the body of the truck uncovered;
Figure 2 is a side elevational view equivalent to Figure 1 with the body slightly raised;
Figure 3 is a side elevational view similar to that of Figure 1 showing the cover assembly with the truck body covered;
Figure 4 is an isometric view of the embodiment of the cover assembly shown in Figure 1 with the truck body shown in phanthom;
~-113488~
Figure 5 is an enlarged isometric view showing the lever for securing the cable of the cover assembly, a portion of the cable and the rod for pivoting the lever; and Figure 6 is a side elevational view of a lever connected to a solenoid according to a second embodiment of the invention.
Figures 1 to 3 illustrate the operation of a cover assembly for a dump truck according to an embodiment of the invention and Figures 4 and 5 illustrate the components of the cover assembly in more detail. In the drawings, the dump truck 2 has a chassis and cab portion 4 and an open rear body 6. The rear body 6 has a top 8, a bottom 10, a front 12, a back 14 and two sides 16 and 18. The body is pivotally mounted on the chassis and cab portion near the back of the chassis 20 for upward and downward movement as illustrated in Figures 1 and 2.
The dump truck 2 is provided with a cover assembly 22. The cover assembly 2~ has a pair of spaced-apart arms 24 and 26. Arms 24 and 26 have bottom ends 28 and 30 respectively connected to a common laterally extending shaft 32. Shaft 32 is pivotally mounted within bearing blocks 34 and 36, both connected to the bottom 10 of body 6 by suit-able means such as bolts or welding. Arms 2~ and 26 exten~
upwardly along sides 16 and 18 of the body 6 respectively to their top ends 38 and 40-respectively located above the top 8 of the body 6. By means of shaft 32 mounted on bearing blocks 34 and 36, arms 24 and 26 are pivotable between a rearward position, as shown in Figures 3 and 4, and a for-ward position, as shown in Figures 1 and 2.
8~8 A Laterally extending take up roller 42 has a central longitudinal shaft 44 connected to top end 38 of arm 24 at one end and to top end 40 of arm 26 at the other end.
A resilient coil spring 46 is located within take up roller 42. A flexible cover 48, of canvas or the like, has a first or back end 50 secured to the take up roller 42 for movement with top ends 38 and 40 of arms 24 and 26 respectively. A
second or front end 52 of the cover 4~ is connected to the upper part of front 12 of body 6.
The cover assembly 22 also includes a mechanism 54 for covering and uncovering the body 6. The mechanism 54 includes a first portion for rotating the arms 24 and 26 comprising shaft 32 and a lever means or quadrant 56. ~, Quadrant 56 is located midway between arms 24 and 26 and is shaped like a quarter portion of a sheave and has an aper-ture 58 tightly fitted over shaft 32 by a keyway, welding or some other suitable means. Quadrant 56 has a curved peri-pheral guide or groove 60 with a back end 62 and a front end 94 extending towards the front 12 of the body 6. Mechanism 54 includes a second portion or cable 64 connected to quadrant 56 adjacent the back end 62 of the peripheral groove 60. Cable 64 is taut and extends forwardly through pipe 65 to a guide means or sheave 66 located at the corner of bottom 10 and front 12 of body 6. Pipe 65 is supported by struts 67 and 69 connected to the bottom 10 of body 6.
Cable 64 has an end 68 distal the quadrant 56 fitted with a stop 70 comprising a sècurable means on cable 64 with a cross sectional extent greater than that of the cable 64.
Although stop 70 could easily take other forms, in the embodiment shown, stop 70 comprises~a cylinder of ,lead ~ -4-~3 3'~88~3 formed on the distal end 68 of the cable 68. A first, nar-rower portion of the cylinder is adjacent the sheave 66 but of such a diameter that it cannot be pulled into sheave 66.
A second wider portion is remote from the sheave 66.
Mechanism 54 also includes a lever 74 pivotally connected to the chassis 20 by means of link pin 76. Lever 74 is T-shaped in section with an upper bifurcated portion 78 and a web 80. Bifurcated portion 78 has a vertical slot 84. Slot 84 comprises securing means on lever 74 near an end 85 of the lever 74 distal the chassis 20. A rod 86 is pivotally connected to lever 74 by clevis 87 and pin 89 and extends into cab 21 of truck 2. A coil spring 88 is located within a slot 90 of web 80 and is compressed between the lever and box section 77. Box section 77 is connected to, and extends laterally across chassis 20.
When the body 6 of the truck 2 is uncovered, the mechanism is normally in the position illustrated in Figure 1. Arms 24 and 26 are pivot~d forwardly about shaft 32 with ; 20 take up roller 42 located adjacent front 12 of the body 6 and with cover 48 wrapped about the take up roller 42. Cable 64 extends about peripheral groove 60 of quadrant 56 from back end 62 to front end 94 and thence forwardly through pipe 65 to sheave 66. Stop 70 rests just in front of sheave 25 66. Lever 74 is pivoted away from body 6 about pin 76.
In order to cover the body, the operatior first raises the body 6 above the chassis 20 a short distance, slightly above the position shown in Figure 2, by the conventional hydraulic cylinders employed on dump trucks.
The end of rod 86 within cab 21 is pushed against the pressure of spring 88 which normally tilts lever 74~towards -11348~8 cab 21. This tilts lever 74 about pin 76 towards back 14 of body 6 until slot 84 is adjacent front 12 and below stop 70.
The operator lowers the body 6 by means of the conventional hydraulic cylinders already mentioned towards the position shown in Figure 3. During the lowering of body 6, stop 70 of cable 64 is held in place by the slot 84 of the lever 74 sliding over the first, narrower portion and abutting the second narrower portion. Since distal end 68 is retained by lever 74 and cannot move downwardly with the body 6, stop 70 ~, exerts a generally upwardly directed force on cable 64 and cable 64 exerts a generally forwardly directed force on quadrant 56. This rotates quadrant 56 about shaft 32 and rotates arms 24 and 26 and moves take up roller 42 towards the back 14 of the body 6. As the take up roller 42 moves rearwardly, cover 48 is unwound from the take up roller 42, covering the body 6.
It should be noted that body 6 is automatically uncovered whenever the body 6 is raised upwardly past the position shown in Figure 2. Spring 46 provides the means : 20 for rotating roller 42 and pivoting the arms 24 and 26.
Whenever body 6 is raised past the position shown in Figure
2, spring 88 tilts lever 74 towards cab 21 to render mec-hanism 54 inoperative and body 6 will remain uncovered when lowered unless the driver tilts lever 74 towards body 6 by pushing rod 86.
As can be appreciated, a cover assembly for a dump truck according to the present invention requires no auxi-liary power means for covering and uncovering the body of li3~8~38 the truck. In the first embodiment just described, a rod 86 is employed to position lever 74. However, a fluid cylinder could be used to tilt lever 74 or a solenoid 91 as shown in Figure 6. Solenoid 91 has a rod 92 pivotally connected to slot 98 of tab 96 on lever 74 by clevis 94. When a current is supplied to solenoid 91 by closing a suitable switch in cab 21, rod 92 moves upwards, tilting lever 74 to engage with stop 70 when body 6 is lowered.
..
~ . ~.,
As can be appreciated, a cover assembly for a dump truck according to the present invention requires no auxi-liary power means for covering and uncovering the body of li3~8~38 the truck. In the first embodiment just described, a rod 86 is employed to position lever 74. However, a fluid cylinder could be used to tilt lever 74 or a solenoid 91 as shown in Figure 6. Solenoid 91 has a rod 92 pivotally connected to slot 98 of tab 96 on lever 74 by clevis 94. When a current is supplied to solenoid 91 by closing a suitable switch in cab 21, rod 92 moves upwards, tilting lever 74 to engage with stop 70 when body 6 is lowered.
..
~ . ~.,
Claims (9)
1. A cover assembly for a dump truck having a chassis and a cab portion and an open rear body with a top, bottom, front, back and sides and pivotally mounted for upward and downward movement on the chassis, the assembly comprising:
a pivotable, laterally extending shaft mounted on the truck;
a pair of spaced apart arms, each arm being to one side of the body and with a bottom end mounted on the pivotable shaft and with a top end above the top of the body;
a flexible cover with a first end secured for movement with the top ends of the arms and with a second end connected to the front of the body;
a laterally extending take up roller connected to the first end of the cover and having resilient means for biasing the roller to rotate and take up the cover;
a first lever mounted on the shaft;
a second lever mounted on the chassis, adjacent the cab;
securing means associated with the second lever;
connecting means extending from the first lever towards the cab;
a catch member attached to the connecting means, distal the first lever, and engagable by said securing means;
locating means for the connection means to locate the connection means adjacent the first lever;
whereby when the body is in its level, rest position and uncovered raising of the body slightly brings the catch member to engage with the securing means, subse-quent lowering of the body acting to pull on the connecting means to move the first lever, to pivot the shaft to move the spaced apart arm to extend the flexible cover over the truck, the truck being uncoverable by raising the body to disengage the catch member and the securing means and allowing the resilient means to rotate the roller to take up the cover.
a pivotable, laterally extending shaft mounted on the truck;
a pair of spaced apart arms, each arm being to one side of the body and with a bottom end mounted on the pivotable shaft and with a top end above the top of the body;
a flexible cover with a first end secured for movement with the top ends of the arms and with a second end connected to the front of the body;
a laterally extending take up roller connected to the first end of the cover and having resilient means for biasing the roller to rotate and take up the cover;
a first lever mounted on the shaft;
a second lever mounted on the chassis, adjacent the cab;
securing means associated with the second lever;
connecting means extending from the first lever towards the cab;
a catch member attached to the connecting means, distal the first lever, and engagable by said securing means;
locating means for the connection means to locate the connection means adjacent the first lever;
whereby when the body is in its level, rest position and uncovered raising of the body slightly brings the catch member to engage with the securing means, subse-quent lowering of the body acting to pull on the connecting means to move the first lever, to pivot the shaft to move the spaced apart arm to extend the flexible cover over the truck, the truck being uncoverable by raising the body to disengage the catch member and the securing means and allowing the resilient means to rotate the roller to take up the cover.
2. A cover assembly as claimed in claim 1, in which the connecting means comprises a cable.
3. A cover assembly as claimed in claim 2, in which the lever means is generally in the shape of a qua-drant with a guide for the cable generally along a curved periphery of the quadrant, the cable being connected near a back end of the quadrant and the front end of the quadrant extending towards the front of the body.
4. A cover assembly as claimed in claim 3, in which the first lever is generally midway between the arms.
5. A cover assembly as claimed in claim 4, in which the second lever has a securing means near an end of the lever, distal the chassis.
6. A cover assembly as claimed in claim 5, in which the securing means comprises a bifurcated portion of the lever.
7. A cover assembly as claimed in claim 6, in which the securable means comprise an attachment on the cable with a cross sectional extent greater than that of the cable.
8. A cover assembly as claimed in claim 7, in which the second lever is pivotally mounted on the chassis for movement towards the back of the body to secure the cable and for movement away from the back of the body to render the means for covering the dump inoperative.
9. A cover assembly as claimed in claim 8, including a solenoid for pivoting the second lever to the desired position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000310874A CA1134888A (en) | 1978-09-07 | 1978-09-07 | Cover for dump trucks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000310874A CA1134888A (en) | 1978-09-07 | 1978-09-07 | Cover for dump trucks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1134888A true CA1134888A (en) | 1982-11-02 |
Family
ID=4112314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000310874A Expired CA1134888A (en) | 1978-09-07 | 1978-09-07 | Cover for dump trucks |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1134888A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5058956A (en) * | 1990-12-13 | 1991-10-22 | Godwin Sr James P | Hydraulically actuated tarp extension and retraction system for a truck |
| US5829818A (en) * | 1997-06-27 | 1998-11-03 | O'daniel; Harold W. | Covering device for a vehicle container |
-
1978
- 1978-09-07 CA CA000310874A patent/CA1134888A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5058956A (en) * | 1990-12-13 | 1991-10-22 | Godwin Sr James P | Hydraulically actuated tarp extension and retraction system for a truck |
| US5829818A (en) * | 1997-06-27 | 1998-11-03 | O'daniel; Harold W. | Covering device for a vehicle container |
| WO1999000270A1 (en) * | 1997-06-27 | 1999-01-07 | Daniel Harold O | Covering device for a vehicle container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |