Implements or apparatus for applying pushing or pulling force – Inclined plane lifter
Patent
1988-07-05
1989-06-06
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Inclined plane lifter
E02C 300
Patent
active
048365017
ABSTRACT:
A structure leveling device designed primarily to be utilized for recreational vehicles which is constructed of an integral plastic member having an upper surface which is divided into a plurality of levels of different heights. This structure leveling device is constructed in a manner to safely support the weight of a vehicle. Also, the device is constructed to facilitate movement of a vehicle wheel onto the different levels. Also, the upper surface of each of the levels includes a roughened anti-skid surface.
REFERENCES:
patent: 2450648 (1948-10-01), Felzer
patent: 3630487 (1971-12-01), Wechter
patent: 3752441 (1973-08-01), Rogers
patent: 3993275 (1976-11-01), Lucas
patent: 4103870 (1978-08-01), Murakami
Munro Jack C.
Watson Robert C.
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