Expansible chamber devices – With inspection window in expansible chamber wall portion – With lock
Patent
1995-12-19
1997-05-27
Denion, Thomas E.
Expansible chamber devices
With inspection window in expansible chamber wall portion
With lock
92 15, 92 63, F01B 2526, F01B 700
Patent
active
056321929
ABSTRACT:
A unique indicator system is incorporated into a release tool for a spring brake actuator. The indicator provides an indication of when the release tool has is fully released. The release tool is preferably of the type wherein a threaded member does not extend outwardly of the actuator during caging of the power spring. The inventive indicator is biased outwardly of the actuator when the release bolt has even partially caged the power spring. It is only when release bolt is fully released that the indicator is pulled inwardly. Thus, an observer has a visual indication of when the power spring caging mechanism has been fully released.
REFERENCES:
patent: 3117496 (1964-01-01), Dobrikin
patent: 3508470 (1970-04-01), Swander et al.
patent: 3782251 (1974-01-01), Le Marchand
patent: 4945818 (1990-08-01), Ware
patent: 5002164 (1991-03-01), Bowyer
Davis Emmett S.
Plantan Ronald S.
Denion Thomas E.
Indian Head Industries Inc.
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