Device for lifting a table

Details Device for lifting a table Device for lifting a table

1983-08-17

1984-05-08

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Hoisting truck

Single throw lever

254122, B60P 148

Patent

active

044470410

ABSTRACT:
A device including a stretchable assembly (2) of pairs of intersecting arms (3) and (4) pivoted to each other at the intersections for raising or lowering a table (5) mounted on the upper ends of the arms. The stretchable assembly (2) is vertically expandable or collapsible by a unit (6) of a cylinder (61) for advancing or retracting a piston rod (62), a pump (63) and an oil tank (66) mounted on a base plate (7) and fixed to a frame (1) at the lower end of the stretchable assembly (2). The piston rod (62) extends substantially upward from the cylinder (61) and is connected at its forward end to lower portions of the arms (3). The piston rod (62) intersects the arms (3) substantially at right angles thereto when the stretchable assembly (2) is in its collapsed position.

REFERENCES:
patent: 1345564 (1920-07-01), Thomas
patent: 2471901 (1949-05-01), Ross
patent: 2863285 (1957-02-01), Pomeroy
patent: 2945551 (1960-07-01), Annin et al.
patent: 3863890 (1975-02-01), Ruffing
patent: 4041799 (1977-08-01), Teti
patent: 4175644 (1979-11-01), Sikli
patent: 4194723 (1980-03-01), Grove et al.

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