Wheel substitutes for land vehicles – With interposed friction drive belt
Patent
1980-11-24
1982-12-07
Scherbel, David A.
Wheel substitutes for land vehicles
With interposed friction drive belt
305 35EB, 254 86H, 180 92C, B62D 5524, B62D 5504
Patent
active
043623409
ABSTRACT:
A standard model truck or trailer having a rear load bearing axle with two side-by-side pneumatic tires mounted on wheels at both ends of the axle is provided. A further set of like side-by-side rear wheels with pneumatic tires are connected to the vehicle's main frame by depending carriers pivoted thereto. The rear wheels are rearwardly biased by a compression spring and may be selectively moved forwardly or rearwardly in an arc about their pivotable connection by a hydraulic piston and cylinder arrangement. An endless tread-type track can be mounted around the succeeding pairs of tires on either side. Each track has two or more parts dovetailed at the ends held together by a spring steel rod inserted in openings therethrough, each opening being defined by a polygonal tube which receives the rod whereby it cannot rotate. The rod is maintained in place by a detent member. A slightly curved plate, rectangular as seen in plan, pivoted from supports depending from frame forward of at least the rearmost wheels, extends rearwardly centrally between the wheels to where a hydraulic cylinder and piston assembly connects it to the frame to lift the wheels simultaneously for installing the tracks. They are installed by decreasing the distance between the wheels through the hydraulic arrangement and, when in place, by releasing pressure in the connected hydraulic piston and cylinder assembly whereby the compression spring tensions the wheels against them.
REFERENCES:
patent: 1689536 (1927-08-01), Saives
patent: 2402042 (1946-06-01), Haushalter
patent: 2571067 (1951-10-01), Seckendorf
patent: 3509956 (1970-05-01), Dufresne
patent: 3511327 (1970-05-01), Schlor
patent: 3844582 (1974-10-01), Cook
Albright Penrose Lucas
Scherbel David A.
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