Loading ramp device which rolls up for convenient storage
AssigneeDT&J, Inc.
InventorsDon Schmaltz, Joe Stanislao, Thomas E. Kenville
Life of this patent
Estimating the term…
Abstract
A loading ramp structure is provided which is constructed out of a plurality of relatively small and rectangular links that are joined end to end to form a span of any desired length. The manner in which these links are joined together allows the span to be rolled up for storage when it is not in use and to be unrolled to form a ridged span when it is to be employed in the loading or unloading of wheeled load materials such as small supplementary vehicles.
Claims18
A loading ramp made up of a plurality of substantially rectangular links, said ramp device formed such that said plurality of rectangular links may be placed in a substantially circular coil, each of said rectangular links comprising:
- a link body having a rectangular link surface said link surface having an upper link surface and a lower link surface, a left and a right outer edge and a front and rear outer edge;
- said link body further having a left and right link rail attached perpendicularly to said rectangular link surface along said left and right outer edges respectively;
- a left and right front pivot tab on said left and right link rail respectively and a left and right rear pivot tab on said left and right link rail respectively said pivot tabs positioned on said link rails below said lower surface of said rectangular link surface, said left and right front pivot tabs being laterally offset in the same first direction in reference to said link rails, said left and right rear pivot tabs being laterally offset in the same second direction in reference to said link rails and said second direction being the opposite direction of said first direction;
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- said left and right front pivot tabs extending forward of said front edge of said rectangular surface and said left and right rear pivot tabs extending rearward of said rear edge of said rectangular surface.
A loading ramp made up of a plurality of substantially rectangular links, said ramp device formed such that said plurality of rectangular links may be placed in various shapes for storage, each of said rectangular links comprising:
- a link body having a rectangular link surface said link surface having an upper link surface and a lower link surface, a left and a right outer edge and a front and rear outer edge;
- said link body further having a left and right link rail fixedly attached perpendicularly to said rectangular link surface along said left and right outer edges respectively such that said left and right link rail extends above and below said rectangular link surface;
- a front and rear contact surface on each link rail above said rectangular link surface;
- a left and right front pivot tab on said left and right link rail respectively and a left and right rear pivot tab on said left and right link rail respectively said pivot tabs positioned on said link rails below said lower surface of said rectangular link surface, said left and right front pivot tabs being laterally offset in the same first direction in reference to said link rails, said left and right rear pivot tabs being laterally offset in the same second direction in reference to said link rails and said second direction being the opposite direction of said first direction;
- said left and right front pivot tabs extending forward of said front edge of said rectangular surface and said left and right rear pivot tabs extending rearward of said rear edge of said rectangular surface;
- and
- a pivot pin hole formed by each of said pivot tabs.
Dependencies are inferred from the claim text.