Lifting device, especially elevating platform for motor vehicles

Details Lifting device, especially elevating platform for motor vehicles Lifting device, especially elevating platform for motor vehicles

1984-05-18

1986-03-04

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Multiple lifters

254122, B60P 154

Patent

active

045736634

ABSTRACT:
In a scissor-type lifting platform with two pairs of scissors disposed independently of one another, with hydraulic operation, a control cylinder is provided at one pair of scissors which is designed such that it produces the power required for the lifting of both pairs of scissors. A slave cylinder is series connected to said control cylinder at the second pair of scissors, which in the case of the lifting movement of the control cylinder is supplied with pressure medium. In this manner, a synchronization of the two pairs of scissors is achieved perforce and a mechanical connecting arrangement between the two pairs of scissors for the monitoring of synchronization may be eliminated.

REFERENCES:
patent: 1880650 (1932-10-01), Zagst
patent: 3246876 (1966-04-01), Larson
patent: 4053073 (1977-10-01), Franchin

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