Patent
1976-04-07
1978-03-21
Hoffman, Drayton E.
E04H 606
Patent
active
040798470
ABSTRACT:
An apparatus for lifting a motor vehicle has a horizontally displaceable support frame on which is mounted a plurality of horizontal arms pivotal on the frame about respective upright axis and each having one horizontally extending upwardly concave part-cylindrical surface shaped to fit against the respective wheel of a motor vehicle positioned adjacent the frame. A drive motor is provided on the frame for pivoting the arms about their respective axes and thereby bringing the surfaces into and out of engagement with the respective vehicle wheels. A deflectable switching rod is mounted on each arm and operates a switch so that when one or two or more arms are tightly engaged against the respective wheels, the drive is shut off so that the frame may be lifted to carry away the entire motor vehicle. Such an arrangement is useable in an automatic car-parking garage.
REFERENCES:
patent: 1594368 (1926-08-01), Jacobos
patent: 1903274 (1933-03-01), Watson
patent: 2801011 (1957-07-01), Overlach et al.
patent: 2899687 (1959-08-01), Jacobsen
patent: 2904200 (1959-09-01), Diehl
Hoffman Drayton E.
Johnson R. B.
Striker Michael J.
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