Land vehicles: dumping – Tilting – Side delivery only
Reexamination Certificate
1999-07-08
2001-01-30
Gordon, Stephen T. (Department: 3612)
Land vehicles: dumping
Tilting
Side delivery only
C298S00800T, C298S02200C
Reexamination Certificate
active
06179385
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. Dedcription of the Related Art
Dump bodies which are employed on trailers or trucks normally are of the end dump type 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 or belly 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.
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 plurality of first and second, horizontally spaced-apart supports are secured to the frame means of the truck or trailer. A side dump body is positioned between each pair of first and second supports. The upper ends of the first and second supports are pivotally secured to the front and back walls of each dump body. First and second hydraulic cylinders are associated with each of the first and second supports and are pivotally connected at their lower ends to the frame means of the trailer or truck and extend upwardly therefrom. The upper ends of the first and second hydraulic cylinders are pivotally secured to the front and back walls of the respective dump body laterally of the pivotal connection of the upper ends of the first and second supports with the front and back walls of the side dump body. The extension of the hydraulic cylinders causes the dump body to pivotally move with respect to the first and second supports so that the dump body is pivoted with respect to the frame means so that the contents thereof may be dumped laterally from the truck or trailer. When a plurality of the side dump bodies are employed on the frame means, each of the dump bodies may contain a different product such as rock, sand, mulch, etc.
It is therefore a principal object of the invention to provide an improved side dump body for use on a truck or 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.
Still another object of the invention is to provide a side dump body which normally rests on the longitudinally extending frame members of the truck or trailer when the body is in its transport or non-dumping position.
These and other objects of the invention 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 T.
Thomte Dennis L.
Thurston Mfg.
Zarley McKee Thomte Voorhees & Sease
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