Land vehicles: dumping – Tilting – Side delivery only
Reexamination Certificate
2000-03-31
2001-03-13
Gordon, Stephen (Department: 3612)
Land vehicles: dumping
Tilting
Side delivery only
C298S00800T, C298S02200C
Reexamination Certificate
active
06199955
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a side dump body and more particularly to a side dump body for use on a trailer or truck and which has increased carrying capacity when compared to conventional side dump trailers.
2. Description of the Related Art
Dump bodies which are employed on trailers or trucks normally are of the end dump type, bottom dump or the side dump type. Since the introduction of the side dump body disclosed in applicant's U.S. Pat. No. 5,480,214, side dump trucks and trailers have experienced wide acceptance. Perhaps the only drawback to applicant's earlier side dump body is that the body does not have as much carrying capacity as an end dump body due to the fact that the side walls of the side dump body extend upwardly and outwardly from a bottom wall, rather than extending vertically upwardly from a bottom wall as in most conventional end dump bodies. The bottom dump bodies also suffer the same drawback, since the side walls of those trailers normally extend upwardly and outwardly from a bottom wall rather than substantially vertically from a bottom wall.
A further disadvantage of conventional side dump and end dump trailers is that they are only able to haul a single commodity. Applicant's earlier applications, noted above, solve many of the shortcomings of the prior art. The instant invention represents an improvement over applicant's previous designs.
SUMMARY OF THE INVENTION
A side dump body is disclosed which has substantially vertically disposed side walls to increase the carrying capacity of the body as compared to those side dump bodies having upwardly and outwardly extending side walls. A side dump body comprises a wheeled frame means having a plurality of longitudinally spaced-apart dump bodies positioned thereon which are pivotally movable from a transport position to a dumping position. The dump bodies define a rearwardmost dump body, a forwardmost dump body, and at least one intermediate dump body positioned between the rearwardmost and forwardmost dump bodies. A first upstanding support is secured at its lower end to the first frame member of the wheeled frame means and extends upwardly therefrom rearwardly of the back wall of the rearwardmost dump body. The first support is pivotally secured to the back wall of the rearwardmost dump body adjacent one side wall thereof. A first hydraulic cylinder is operatively pivotally secured at its lower end to the frame means and extends upwardly therefrom rearwardly of the back wall and has its rods end pivotally secured to the back wall of the rearwardmost dump body. A second upstanding support is secured at its lower end to the first frame member of the wheeled frame means and extends therefrom forwardly of the front wall of the forwardmost dump body. The second support is pivotally secured to the front wall of the forwardmost dump body adjacent the first side wall thereof. A second hydraulic cylinder is operatively pivotally secured at its base end to the frame means and extends upwardly therefrom forwardly of the front wall of the forwardmost dump body and has its rod end pivotally connected to the front wall of the forwardmost dump body. A third upstanding support is secured at its lower end to the first frame member of the frame means and extends upwardly therefrom between the front wall of the rearwardmost dump body and the back wall of the intermediate dump body positioned forwardly thereof with the third support being pivotally secured to the front wall of the rearwardmost dump body and the back wall of the intermediate dump body positioned forwardly thereof. A third hydraulic cylinder is pivotally secured at its base end to the frame means and extends upwardly therefrom forwardly of the front wall of the rearwardmost dump body and has its rod end pivotally secured to the front wall of the rearwardmost dump body. A fourth hydraulic cylinder is pivotally secured at its base end to the frame means and extends upwardly therefrom rearwardly of the back wall of the intermediate dump body positioned forwardly of the rearwardmost dump body with the rod end of the fourth hydraulic cylinder being pivotally secured to the back wall of the intermediate dump body positioned forwardly of the rearwardmost dump body. A fourth upstanding support is secured at its lower end to the first frame member of the frame means and extends upwardly therefrom between the back wall of the forwardmost dump body and the front wall of the intermediate dump body positioned rearwardly thereof, and has its rod end pivotally secured to the back wall of the forwardmost dump body and the front wall of the intermediate dump body positioned rearwardly thereof. A fifth hydraulic cylinder is pivotally secured at its base end to the frame means and extends upwardly therefrom rearwardly of the back wall of the forwardmost dump body and has its rod end pivotally secured to the back wall of the forwardmost dump body. A sixth hydraulic cylinder has its base end pivotally secured at its lower end to the frame means and extends upwardly therefrom forwardly of the front wall of the intermediate dump body positioned rearwardly of the forwardmost dump body with the rod end of the sixth hydraulic cylinder being pivotally secured to the front wall of the intermediate dump body positioned rearwardly of the forwardmost dump body. The first and third cylinders are normally in a retracted position, but are movable to an extended position whereby the rearwardmost dump body will pivotally move with respect to the first and third supports and will pivotally move from its transport to its dumping position so that the material in the rearwardmost dump body will be dumped therefrom laterally of the frame means. The second and fifth cylinders are normally in their retracted condition, but are movable to an extended position whereby the forwardmost dump body will pivotally move with respect to the second and fourth supports to pivotally move from its transport position to its dumping position so that the material in the forwardmost dump body will be dumped therefrom laterally of the frame means. The fourth and sixth cylinders are normally in a retracted condition, but are movable to an extended position so that the intermediate dump body will pivotally move with respect to the third and fourth supports and will pivotally move from its transport position to its dumping position so that the material in the intermediate dump body will be dumped therefrom laterally of the frame means.
It is therefore a principal object of the invention to provide an improved side dump body for use on a truck or a trailer.
Still another object of the invention is to provide a side dump body having an increased carrying capacity when compared to conventional side dump bodies.
Yet another object of the invention is to provide a side dump body which is stable during use.
Still another object of the invention is to provide a side dump truck or trailer wherein a plurality of side dump bodies are individually selectively pivotally secured to the frame means of the truck or trailer.
Yet another object of the invention is to provide an improved mounting means which is positioned between adjacent side dump bodies.
These and other objects will be apparent to those skilled in the art.
REFERENCES:
patent: 3019054 (1962-01-01), Stahly
patent: 3323838 (1967-06-01), Trucco et al.
patent: 3753593 (1973-08-01), Wells et al.
patent: 3844617 (1974-10-01), Kostman
patent: 4200334 (1980-04-01), Lindholm
patent: 5480214 (1996-01-01), Rogers
patent: 5967615 (1999-10-01), Rogers
Gordon Stephen
Thomte Dennis L.
Thurston Mfg. Co.
Zarley McKee Thomte Voorhees & Sease
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