Apparatus for obtaining substantially equal steplength of each j

Details Apparatus for obtaining substantially equal steplength of each j Apparatus for obtaining substantially equal steplength of each j

1976-11-19

1977-09-20

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Clutch actuated

B66F 100

Patent

active

040492370

ABSTRACT:
An apparatus for obtaining substantially equal step length of each jack in a group of pressure fluid operated climbing jacks working on a common object for lifting or lowering it. The apparatus comprises at least one compensation jack associated with each climbing jack. The compensation jacks are arranged to transfer substantially the same load as the respective associated climbing jack and to be actuated when the climbing jack has carried out a full stroke without reaching the intended step length, in order thereby to effect a complementary movement of the load.

REFERENCES:
patent: 2343993 (1944-03-01), Naylor
patent: 3685801 (1972-08-01), Ahlgren
patent: 3986368 (1976-10-01), Levingston

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