Lifting apparatus

Details Lifting apparatus Lifting apparatus

1980-11-28

1983-02-15

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Lazy tongs

254 9C, 187 18, B60P 102

Patent

active

043737013

ABSTRACT:
Lifting apparatus comprising a foundation, a platform, and a lifting mechanism of pantographic type disposed between the foundation and the platform. The lifting mechanism is constructed with a plurality of superimposed X-link units, each of the X-link units comprising a pair of link levers rotatably connected to each other at a central portion to form an X-link. A lever arm is rotatably provided between the central portion and an end of the one of link levers, and driving apparatus is provided on the one of link levers for rotating the lever arm. One end of the lever arm is engaged with the other link lever connected with the end of the link lever carrying the driving apparatus, whereby the rotation of the lever arm expands the lifting mechanism of pantographic type.

REFERENCES:
patent: 3168284 (1965-02-01), Fisher
patent: 3446379 (1969-05-01), Phillips
patent: 4114854 (1978-09-01), Clark

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