Lifting apparatus

Details Lifting apparatus Lifting apparatus

1980-05-09

1982-09-07

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Lazy tongs

254 9C, B66F 322

Patent

active

043480080

ABSTRACT:
A lifting apparatus having a carriage, a pantograph comprising a plurality of X-link units provided on the carriage, and a platform provided on the pantograph. Each X-link unit comprises a pair of outer pipes rotatably connected to each other at a central portion to form an X-link and a pair of inner pipes slidably inserted into each of the outer pipes from the opposite ends. The end of the each inner pipes of the lowermost X-link unit is connected to the carriage and the end of each inner pipe of the uppermost X-link unit is connected to the platform. Driving means for extending and retracting each inner pipe is provided in each of the outer pipes. The pantograph is extended by extending the inner pipes for elevating the platform.

REFERENCES:
patent: Re29542 (1978-02-01), Richards

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