Land vehicles: bodies and tops – Tops – Roll-up covers
Patent
1995-06-05
1996-08-27
Pedder, Dennis H.
Land vehicles: bodies and tops
Tops
Roll-up covers
2421571, 160243, 160265, B60P 704
Patent
active
055493475
ABSTRACT:
The present invention is directed toward an all weather, mechanically reciprocatable, roll top cover apparatus for conveniently and reliably covering and uncovering the open top side of receptacles and the like. The apparatus consists of a support structure mounted at the open top side of the receptacle for supporting a flexible cover and of two primary operating drive devices. The cover is divided into two sloping panels by the support structure to facilitate precipitation removal and to maximize volumetric capacity of the receptacle. The operating drive devices include an uncovering drive device for removing the cover and a covering drive device for replacing the cover. In particular, the cover has one edge fixed at one side wall of the receptacle, while the opposing edge is free to travel between the opposing side walls. The uncovering drive device includes a shaft mounted to the cover centrally. To remove the cover, the shaft is rotated toward the cover's fixed edge to wind the cover on the shaft. A plurality of stops, located at the fixed edge's attachment to the side wall, prevent the shaft, with the cover wound thereon, from rotating beyond the side wall. The covering drive device includes a shaft rotatably mounted to the opposite side wall and a plurality of flexible straps and strap winding systems. The straps interconnect the shaft to the free edge of the cover. To cover the open top, the shaft is rotated to wind the straps for drawing the cover over the truss structure and across the open top side of the receptacle. Each of the strap winding systems includes a spool into which the strap is wound and a pivotally mounted drum guide bracket for restricting lateral displacement of the strap with respect to the spool and to pivot to accommodate varying angles at which the strap may enter and exit the strap winding system for preventing strap damage.
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"WCCO Shur-Lok Roll Up Tarp" descriptive flyer; 4 pages, dated Sep. 1985, published by Wahpeton Canvas Co, Inc., 2217 N. 9th St., Wahpeton, N.D. 58075.
"Roll It On . . . Roll It Off . . . Midwest Coverall for Trucks, Trailers, Wagons" descriptive flyer; 4 pages, dated Mar. 1981, published by Midwest Industries, Inc., Ida Grove, Iowa 51445.
Pedder Dennis H.
Willknight, Inc.
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