Fluid cylinder retraction locking device

Details Fluid cylinder retraction locking device Fluid cylinder retraction locking device

1994-10-17

1996-09-17

Larson, James

Drying and gas or vapor contact with solids

Process

Gas or vapor contact with treated material

34631, 34640, 91170MP, F26B 1300

Patent

active

055556442

ABSTRACT:
Method and apparatus for eliminating the danger of inadvertent failure of a weight-bearing retraction system, such as a dryer hood retraction system. A load lifted using a fluid cylinder can be easily locked in place against gravity by using a double rod ended cylinder, where the rod end not exerting the force is permitted to move through a clearance hole while the load is being lifted, and is then blocked to prevent the return motion until the load is to be released.

REFERENCES:
patent: 5259124 (1993-11-01), Poterala
patent: 5303484 (1994-04-01), Hagen et al.
patent: 5384969 (1995-01-01), Troetscher et al.

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