Expansible chamber devices – Fluid conduit in constant communication with relatively...
Patent
1984-11-30
1986-11-11
Garrett, Robert E.
Expansible chamber devices
Fluid conduit in constant communication with relatively...
384276, 384295, 384624, 279 4, F01B 3100
Patent
active
046215689
ABSTRACT:
A rotary hydraulic cylinder for actuating a rotary work holder, on a machine tool. A non-rotary fluid distributor is supported on the cylinder by a bearing sleeve. The bearing surface of the sleeve has an anti-friction coating. The sleeve is rotatable within a housing and is frictionally restrained from rotation under normal operating conditions by O-rings, but can rotate in the event of bearing seizure. Sleeve rotation is sensed through a proximity switch to stop operation of the machine tool.
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Garrett Robert E.
The S-P Manufacturing Corporation
Williamson Mark A.
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