CA2698965C - Dump trailer - Google Patents
Dump trailer Download PDFInfo
- Publication number
- CA2698965C CA2698965C CA2698965A CA2698965A CA2698965C CA 2698965 C CA2698965 C CA 2698965C CA 2698965 A CA2698965 A CA 2698965A CA 2698965 A CA2698965 A CA 2698965A CA 2698965 C CA2698965 C CA 2698965C
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- CA
- Canada
- Prior art keywords
- flatbed
- panel
- panels
- configuration
- movement
- 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.)
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- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- 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
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/43—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using a loading ramp mounted on the vehicle
- B60P1/435—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using a loading ramp mounted on the vehicle the ramp being attached to or making part of the side- or tailboards of the vehicle
-
- 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
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/43—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using a loading ramp mounted on the vehicle
- B60P1/438—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using a loading ramp mounted on the vehicle with means for balancing the weight of the ramp between use and non-use position
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
A trailer has a pivotable flatbed. A pair of walls extend, when the flatbed is horizontal, upwardly, from respective flatbed sides. A closure includes a pair of panels and, connected to each panel by a hinge connection, an extension. In a first configuration, the panels are hinged to the rear of the flatbed. In a transport position, when the flatbed is horizontal, the panels extend upwardly and each extension extends downwardly from the respective hinge connection. In the loading position, the panels extend rearwardly and downwardly from the rear end of the flatbed and each extension extends downwardly, from the respective hinge connection, to define a pair of ramps. In a second configuration, each panel is hinged to a wall to permit panel movement in the manner of side-hinged doors. A mechanism applies force to the panels to facilitate movement from the loading to the transport position.
Description
DUMP TRAILER
FIELD OF THE INVENTION
The present invention relates to the field of trailers.
BACKGROUND OF THE INVENTION
Dump trailers are widely used by landscapers, for transporting lawnmowers and the like, and for hauling soil and the like. A conventional landscaping arrangement involves a dump trailer with a removable tailgate and removable ramps. The ramps are temporarily installed whenever heavy wheeled equipment is being placed in or removed from the trailer. The tailgate is temporarily removed whenever a load is to be dumped.
SUMMARY OF THE INVENTION
Forming one aspect of the invention is a trailer apparatus. The trailer apparatus comprises: a flatbed dump trailer portion, a pair of wall portions, a rear closure assembly and a spring-assist mechanism.
The dump trailer portion has a flatbed movable between a horizontal position and an inclined dump position. The wall portions are operatively secured to the flatbed for movement therewith so as to extend, when the flatbed is disposed in the horizontal position, upwardly, each from a respective side of the flatbed. The rear closure assembly includes a pair of panels and, hingedly connected to each panel, an extension.
in a first configuration of the rear closure, the panels are disposed in coplanar, side-by-side relation and hinged to the rear end of the flatbed, to provide for movement of the rear closure assembly between a transport position and a loading position. In the transport position, and when the flatbed is in the horizontal position, the panels extend upwardly from the flatbed In the manner of a tailgate and each extension extends downwardly from the upper end of the panel for which it is provided. In the loading position, the panels extend rearwardiy and downwardly from the rear end of the flatbed and each extension extends downwardly, from the lower end of the panel for which it is provided, to define collectively, in combination with the panels, a pair of ramps leading to the flatbed.
FIELD OF THE INVENTION
The present invention relates to the field of trailers.
BACKGROUND OF THE INVENTION
Dump trailers are widely used by landscapers, for transporting lawnmowers and the like, and for hauling soil and the like. A conventional landscaping arrangement involves a dump trailer with a removable tailgate and removable ramps. The ramps are temporarily installed whenever heavy wheeled equipment is being placed in or removed from the trailer. The tailgate is temporarily removed whenever a load is to be dumped.
SUMMARY OF THE INVENTION
Forming one aspect of the invention is a trailer apparatus. The trailer apparatus comprises: a flatbed dump trailer portion, a pair of wall portions, a rear closure assembly and a spring-assist mechanism.
The dump trailer portion has a flatbed movable between a horizontal position and an inclined dump position. The wall portions are operatively secured to the flatbed for movement therewith so as to extend, when the flatbed is disposed in the horizontal position, upwardly, each from a respective side of the flatbed. The rear closure assembly includes a pair of panels and, hingedly connected to each panel, an extension.
in a first configuration of the rear closure, the panels are disposed in coplanar, side-by-side relation and hinged to the rear end of the flatbed, to provide for movement of the rear closure assembly between a transport position and a loading position. In the transport position, and when the flatbed is in the horizontal position, the panels extend upwardly from the flatbed In the manner of a tailgate and each extension extends downwardly from the upper end of the panel for which it is provided. In the loading position, the panels extend rearwardiy and downwardly from the rear end of the flatbed and each extension extends downwardly, from the lower end of the panel for which it is provided, to define collectively, in combination with the panels, a pair of ramps leading to the flatbed.
2 In a second configuration: (i) each panel is hingedly connected to a respective wall portion for movement about a respective axis which extends normally from the flatbed and (ii) each panel is disconnected from the flatbed, to permit the rear closure assembly to assume the transport position and to permit pivotal movement of the panels in the manner of side-hinged barn doors.
The spring-assist mechanism is adapted to apply force to the rear panels to facilitate movement of the rear closure assembly from the loading position to the transport position.
According to other aspects of the invention: the spring assist mechanism can comprise a coil spring coupled at one end to one of the side walls and at the other end to the panel which, in the second configuration, is hingedly connected to said wall; the other end of the coil spring can be coupled to the panel by a cable; the coil spring can be contained in a conduit secured to said sidewall and which is orientated substantially parallel to the flatbed; and to avoid binding of the cable in use, the cable can be coupled to the panel by an eyelet in which the cable terminates; an eyelet carried by the panel; and a link for coupling the eyelets together.
According to another aspect of the invention: (i) the hinged connection of the panel to the flatbed can be provided by a pintle bar which is removed from the hinge of which it forms part in the second configuration; (ii) the hinged connection of each panel to its respective wall portion can be provided by a hinge pin which is removed from the hinge of which it forms part in the first configuration; and (iii) the trailer can have a third configuration, wherein the panels and the wall portions define a fixed box trailer and the panels are not movable, when the hinge pins and the pintle bars are installed in the respective hinges of which they form part.
According to another aspect of the invention, the apparatus can further comprise apparatus for selectively locking each extension against movement relative to the panel to which it is hingedly connected.
According to another aspect of the invention, each panel can carry a rod about which one end of the extension provided for said each panel is journalled to provide for the hinged connection therebetween, the hinged connection also permitting movement of the extension along the rod, to provide for adjustment of the spacing between the pair of ramps in use.
Advantages, features and characteristics of the present invention will be understood on a review of the accompanying detailed description, claims and drawings, the latter being briefly described hereinafter.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a trailer according to an exemplary embodiment of the invention, with the rear closure in the transport position and the flatbed in the horizontal position;
FIG. 2 is a side view of the structure of FIG. 1;
FIG. 3 is a rear view of the structure of FIG. 1;
FIG. 4 is a rear profile view of the structure of FIG. 1, with the closure in the loading position;
FIG. 5 is a view similar to FIG. 4, with the jack supports extended;
FIG. 6 is a rear profile view of the structure of FIG. 1, with the closure In the dump position;
FIG. 7 is a front profile view of the structure of FIG. 1, with the closure in the dump position and the flatbed in the dump position;
FIG. 8 is an enlarged rear view of encircled area 8/9/10/11 of FIG. 2;
FIG. 9 is an enlarged side view of encircled area 8/9/10/11 of FIG. 2.
FIG. 10 is another enlarged side view of encircled area 8/9/10/11 of FIG. 2 FIG. 11 Is yet another enlarged side view of encircled area 8/9/10/11 of FIG.
The spring-assist mechanism is adapted to apply force to the rear panels to facilitate movement of the rear closure assembly from the loading position to the transport position.
According to other aspects of the invention: the spring assist mechanism can comprise a coil spring coupled at one end to one of the side walls and at the other end to the panel which, in the second configuration, is hingedly connected to said wall; the other end of the coil spring can be coupled to the panel by a cable; the coil spring can be contained in a conduit secured to said sidewall and which is orientated substantially parallel to the flatbed; and to avoid binding of the cable in use, the cable can be coupled to the panel by an eyelet in which the cable terminates; an eyelet carried by the panel; and a link for coupling the eyelets together.
According to another aspect of the invention: (i) the hinged connection of the panel to the flatbed can be provided by a pintle bar which is removed from the hinge of which it forms part in the second configuration; (ii) the hinged connection of each panel to its respective wall portion can be provided by a hinge pin which is removed from the hinge of which it forms part in the first configuration; and (iii) the trailer can have a third configuration, wherein the panels and the wall portions define a fixed box trailer and the panels are not movable, when the hinge pins and the pintle bars are installed in the respective hinges of which they form part.
According to another aspect of the invention, the apparatus can further comprise apparatus for selectively locking each extension against movement relative to the panel to which it is hingedly connected.
According to another aspect of the invention, each panel can carry a rod about which one end of the extension provided for said each panel is journalled to provide for the hinged connection therebetween, the hinged connection also permitting movement of the extension along the rod, to provide for adjustment of the spacing between the pair of ramps in use.
Advantages, features and characteristics of the present invention will be understood on a review of the accompanying detailed description, claims and drawings, the latter being briefly described hereinafter.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a trailer according to an exemplary embodiment of the invention, with the rear closure in the transport position and the flatbed in the horizontal position;
FIG. 2 is a side view of the structure of FIG. 1;
FIG. 3 is a rear view of the structure of FIG. 1;
FIG. 4 is a rear profile view of the structure of FIG. 1, with the closure in the loading position;
FIG. 5 is a view similar to FIG. 4, with the jack supports extended;
FIG. 6 is a rear profile view of the structure of FIG. 1, with the closure In the dump position;
FIG. 7 is a front profile view of the structure of FIG. 1, with the closure in the dump position and the flatbed in the dump position;
FIG. 8 is an enlarged rear view of encircled area 8/9/10/11 of FIG. 2;
FIG. 9 is an enlarged side view of encircled area 8/9/10/11 of FIG. 2.
FIG. 10 is another enlarged side view of encircled area 8/9/10/11 of FIG. 2 FIG. 11 Is yet another enlarged side view of encircled area 8/9/10/11 of FIG.
3 DETAILED DESCRIPTION
A trailer apparatus 20 according to an exemplary embodiment of the invention is shown in FIGS. 1-3 and will be understood to comprise a flatbed dump trailer portion 22, a pair of wall portions 24, a rear closure assembly 26, a support assembly 28, a spring-assist mechanism 30 and a locking mechanism 32.
The flatbed trailer portion 22 is shown in these figures with the flatbed horizontally-positioned, but it will be understood that the flatbed can also assume an inclined dump position, described fully hereinafter, through the use of a pneumatic cylinder.
The wall portions 24 are each operatively secured to the flatbed to extend upwardly each from a respective side of the flatbed.
As best seen in FIG. 3, the rear closure assembly 26 has a pair of panels 34 and, hingedly connected to each panel, an extension 36; the hinged connection is provided by a rod 38 carried by the panel 34 about which the extension 36 is journalled.
In a first configuration of the rear closure 26, the panels 34 are disposed in coplanar, side-by-side relation and hinged to the rear end of the flatbed by a pair of pintle bars 40, which couple hinge sockets 42 of the panels with hinge sockets 44 of the flatbed, to provide for movement of the rear closure assembly 26 between a transport position and a loading position. In the loading position, as shown in FIG. 4, the panels 34 extend rearwardly and downwardly from the rear end of the flatbed and each extension 36 extends downwardly, from the lower edge of the panel 34 for which it is provided, to define collectively, in combination with the panels, a pair of ramps 46 leading to the flatbed 47. The hinged connections between the panels 34 and the extensions 36, in addition to providing for said hinged movement, also permit movement of the extensions 36 along the rods 38, to provide for adjustment of the spacing between the pair of ramps 46 in use, i.e. along arrow Y-Yin FIG. 4. This permits vehicles having different wheel spacing to use the ramps to enter and exit the box when the rear closure 26 is in the loading position. The transport position is that shown in FIGS. 1-3 and in this position the panels 34 extend upwardly from the flatbed in the manner of a tailgate and each extension 36 extends downwardly from the upper end of the panel 34 for which it is provided.
A trailer apparatus 20 according to an exemplary embodiment of the invention is shown in FIGS. 1-3 and will be understood to comprise a flatbed dump trailer portion 22, a pair of wall portions 24, a rear closure assembly 26, a support assembly 28, a spring-assist mechanism 30 and a locking mechanism 32.
The flatbed trailer portion 22 is shown in these figures with the flatbed horizontally-positioned, but it will be understood that the flatbed can also assume an inclined dump position, described fully hereinafter, through the use of a pneumatic cylinder.
The wall portions 24 are each operatively secured to the flatbed to extend upwardly each from a respective side of the flatbed.
As best seen in FIG. 3, the rear closure assembly 26 has a pair of panels 34 and, hingedly connected to each panel, an extension 36; the hinged connection is provided by a rod 38 carried by the panel 34 about which the extension 36 is journalled.
In a first configuration of the rear closure 26, the panels 34 are disposed in coplanar, side-by-side relation and hinged to the rear end of the flatbed by a pair of pintle bars 40, which couple hinge sockets 42 of the panels with hinge sockets 44 of the flatbed, to provide for movement of the rear closure assembly 26 between a transport position and a loading position. In the loading position, as shown in FIG. 4, the panels 34 extend rearwardly and downwardly from the rear end of the flatbed and each extension 36 extends downwardly, from the lower edge of the panel 34 for which it is provided, to define collectively, in combination with the panels, a pair of ramps 46 leading to the flatbed 47. The hinged connections between the panels 34 and the extensions 36, in addition to providing for said hinged movement, also permit movement of the extensions 36 along the rods 38, to provide for adjustment of the spacing between the pair of ramps 46 in use, i.e. along arrow Y-Yin FIG. 4. This permits vehicles having different wheel spacing to use the ramps to enter and exit the box when the rear closure 26 is in the loading position. The transport position is that shown in FIGS. 1-3 and in this position the panels 34 extend upwardly from the flatbed in the manner of a tailgate and each extension 36 extends downwardly from the upper end of the panel 34 for which it is provided.
4 The locking mechanism 32 permits the extensions 36 to be secured as shown in FIG. 3, and takes the form of a pair of locking pins 48 which engage bores in stubs that extend, from the panels, through corresponding bores defined in the extensions. This avoids, for example, swinging movement of the extensions 36 during movement of the trailer 20, which could cause damage and unnecessary noise.
The support assembly 28 comprises a pair of jack stands disposed beneath the flatbed, which can be selectively extended, as shown in FIG. 5, to support the rear end of the trailer 20 during loading and unloading operations.
The spring-assist mechanism 30 is adapted to apply force to the rear panels 34 to facilitate movement of the rear closure 26 assembly from the loading position to the transport position and comprises, for each sidewall 24, a coil spring, indicated by arrow 50. The coil spring 50 is coupled at one end to the side wall 24 for which it is provided. The other end of the coil spring 50 is coupled, by a cable 52, to the panel 34 which, in the second configuration, is hingedly connected to said wall 24. A
conduit 54, secured to said sidewall 24 and orientated substantially parallel to the flatbed 47, contains the coil spring 50, and, as best seen in FIG. 9, to avoid binding of the cable in use, the cable 52 is coupled to the panel 34 by an eyelet 56 In which the cable 52 terminates; an eyelet 58 carried by the panel 34; and a link 60 for coupling the eyelets 56,58 together. Cable 52 passes through a smooth eyelet 51, to avoid cable wear.
Removal of the pintle bars 40 from the hinge sockets 42,44, and insertion of hinge pins 62 into hinge sockets 64,66 defined on the walls 24 and the panels 34, defines a second configuration of the rear closure 26.
In this configuration, each panel 34 is hingedly connected to a respective wall portion 24 for movement about a respective Z-Z axis, indicated in FIG. 6, which extends normally from the flatbed 37, to permit the rear closure 26 assembly to assume the transport position and to permit pivotal movement of the panels 34 in the manner of side-hinged barn doors.
The trailer 20 Is shown in a dump position in FIG. 7; herein, it will be seen that the flatbed 37 is in the inclined dump position; the extensions 36 are held In nested relation against the panels 34 by the locking mechanism 48; and the panels 34 are swung frontwardly and secured to the sides 24 of the trailer 20 by chains 68.
The trailer 20 has a third configuration wherein the panels 34 and the wall portions 24 define a fixed box trailer and the panels 34 are not movable; this configuration is defined by the presence of the hinge pins 62 and the pintle bars 40 installed in the respective hinges 64,66 and 42,44 of which they form part. The trailer is shown in this configuration in FIGS. 1-2 and 8-9.
Whereas but a single embodiment of the invention is herein shown and described, it will be evident that numerous variations are possible. Accordingly, the invention should be understood as limited only by the accompanying claims, purposively construed.
The support assembly 28 comprises a pair of jack stands disposed beneath the flatbed, which can be selectively extended, as shown in FIG. 5, to support the rear end of the trailer 20 during loading and unloading operations.
The spring-assist mechanism 30 is adapted to apply force to the rear panels 34 to facilitate movement of the rear closure 26 assembly from the loading position to the transport position and comprises, for each sidewall 24, a coil spring, indicated by arrow 50. The coil spring 50 is coupled at one end to the side wall 24 for which it is provided. The other end of the coil spring 50 is coupled, by a cable 52, to the panel 34 which, in the second configuration, is hingedly connected to said wall 24. A
conduit 54, secured to said sidewall 24 and orientated substantially parallel to the flatbed 47, contains the coil spring 50, and, as best seen in FIG. 9, to avoid binding of the cable in use, the cable 52 is coupled to the panel 34 by an eyelet 56 In which the cable 52 terminates; an eyelet 58 carried by the panel 34; and a link 60 for coupling the eyelets 56,58 together. Cable 52 passes through a smooth eyelet 51, to avoid cable wear.
Removal of the pintle bars 40 from the hinge sockets 42,44, and insertion of hinge pins 62 into hinge sockets 64,66 defined on the walls 24 and the panels 34, defines a second configuration of the rear closure 26.
In this configuration, each panel 34 is hingedly connected to a respective wall portion 24 for movement about a respective Z-Z axis, indicated in FIG. 6, which extends normally from the flatbed 37, to permit the rear closure 26 assembly to assume the transport position and to permit pivotal movement of the panels 34 in the manner of side-hinged barn doors.
The trailer 20 Is shown in a dump position in FIG. 7; herein, it will be seen that the flatbed 37 is in the inclined dump position; the extensions 36 are held In nested relation against the panels 34 by the locking mechanism 48; and the panels 34 are swung frontwardly and secured to the sides 24 of the trailer 20 by chains 68.
The trailer 20 has a third configuration wherein the panels 34 and the wall portions 24 define a fixed box trailer and the panels 34 are not movable; this configuration is defined by the presence of the hinge pins 62 and the pintle bars 40 installed in the respective hinges 64,66 and 42,44 of which they form part. The trailer is shown in this configuration in FIGS. 1-2 and 8-9.
Whereas but a single embodiment of the invention is herein shown and described, it will be evident that numerous variations are possible. Accordingly, the invention should be understood as limited only by the accompanying claims, purposively construed.
Claims (8)
1. A trailer apparatus comprising:
a flatbed dump trailer portion having a flatbed movable between a horizontal position and an inclined dump position;
a pair of wall portions each operatively secured to the flatbed for movement therewith so as to extend, when the flatbed is disposed in the horizontal position, upwardly, each from a respective side of the flatbed; and a rear closure assembly including a pair of panels and, hingedly connected to each panel, an extension, the rear closure assembly having a first configuration, wherein the panels are disposed in coplanar, side-by-side relation and hinged to the rear end of the flatbed, to provide for movement of the rear closure assembly between a transport position, wherein, when the flatbed is in the horizontal position, the panels extend upwardly from the flatbed in the manner of a tailgate and each extension extends downwardly from the upper end of the panel for which it is provided;
a loading position, wherein the panels extend rearwardly and downwardly from the rear end of the flatbed and each extension extends downwardly, from the lower end of the panel for which it is provided, to define collectively, in combination with the panels, a pair of ramps leading to the flatbed a second configuration, wherein each panel is hingedly connected to a respective wall portion for movement about a respective axis which extends normally from the flatbed and wherein each panel is disconnected from the flatbed, to permit the rear closure assembly to assume the transport position and to permit pivotal movement of the panels in the manner of side-hinged barn doors; and a spring-assist mechanism adapted to apply force to the rear panels to facilitate movement of the rear closure assembly from the loading position to the transport position.
a flatbed dump trailer portion having a flatbed movable between a horizontal position and an inclined dump position;
a pair of wall portions each operatively secured to the flatbed for movement therewith so as to extend, when the flatbed is disposed in the horizontal position, upwardly, each from a respective side of the flatbed; and a rear closure assembly including a pair of panels and, hingedly connected to each panel, an extension, the rear closure assembly having a first configuration, wherein the panels are disposed in coplanar, side-by-side relation and hinged to the rear end of the flatbed, to provide for movement of the rear closure assembly between a transport position, wherein, when the flatbed is in the horizontal position, the panels extend upwardly from the flatbed in the manner of a tailgate and each extension extends downwardly from the upper end of the panel for which it is provided;
a loading position, wherein the panels extend rearwardly and downwardly from the rear end of the flatbed and each extension extends downwardly, from the lower end of the panel for which it is provided, to define collectively, in combination with the panels, a pair of ramps leading to the flatbed a second configuration, wherein each panel is hingedly connected to a respective wall portion for movement about a respective axis which extends normally from the flatbed and wherein each panel is disconnected from the flatbed, to permit the rear closure assembly to assume the transport position and to permit pivotal movement of the panels in the manner of side-hinged barn doors; and a spring-assist mechanism adapted to apply force to the rear panels to facilitate movement of the rear closure assembly from the loading position to the transport position.
2. Apparatus according to claim 1, wherein the hinged connection of the panel to the flatbed is provided by a pintle bar which is removed from the hinge of which it forms part in the second configuration;
the hinged connection of each panel to its respective wall portion is provided by a hinge pin which is removed from the hinge of which it forms part in the first configuration; and the trailer has a third configuration, wherein the panels and the wall portions define a box trailer and the panels are not movable, when the hinge pins and the pintle bar are installed in the respective hinges of which they form part.
the hinged connection of each panel to its respective wall portion is provided by a hinge pin which is removed from the hinge of which it forms part in the first configuration; and the trailer has a third configuration, wherein the panels and the wall portions define a box trailer and the panels are not movable, when the hinge pins and the pintle bar are installed in the respective hinges of which they form part.
3. Apparatus according to claim 1, further comprising apparatus for selectively locking each extension against movement relative to the panel to which it is hingedly connected.
4. Apparatus according to claim 1, wherein the spring assist mechanism comprises a coil spring coupled at one end to one of the side walls and at the other end to the panel which, in the second configuration, is hingedly connected to said wall.
5. Apparatus according to claim 4, wherein the other end of the coil spring is coupled to the panel by a cable.
6. Apparatus according to claim 5, wherein the coil spring is contained in a conduit secured to said sidewall and which is orientated substantially parallel to the flatbed.
7. Apparatus according to claim 6, wherein, to avoid binding of the cable in use, the cable is coupled to the panel by an eyelet in which the cable terminates;
an eyelet carried by the panel;
a link for coupling the eyelets together.
an eyelet carried by the panel;
a link for coupling the eyelets together.
8. Apparatus according to claim 1, wherein each panel carries a rod about which one end of the extension provided for said each panel is journalled to provide for the hinged connection therebetween, the hinged connection also permitting movement of the extension along the rod, to provide for adjustment of the spacing between the pair of ramps in use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2698965A CA2698965C (en) | 2010-04-01 | 2010-04-01 | Dump trailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2698965A CA2698965C (en) | 2010-04-01 | 2010-04-01 | Dump trailer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2698965A1 CA2698965A1 (en) | 2011-10-01 |
| CA2698965C true CA2698965C (en) | 2017-11-28 |
Family
ID=44681794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2698965A Active CA2698965C (en) | 2010-04-01 | 2010-04-01 | Dump trailer |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2698965C (en) |
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2010
- 2010-04-01 CA CA2698965A patent/CA2698965C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2698965A1 (en) | 2011-10-01 |
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| EEER | Examination request |
Effective date: 20150327 |