Overspeed control means for pneumatic tools

Details Overspeed control means for pneumatic tools Overspeed control means for pneumatic tools

G - Physics

05

D

121/119

G05D 13/10 (2006.01) F01D 15/06 (2006.01)

Patent

CA 1146028

ABSTRACT OF THE DISCLOSURE An overspeed control device for pneumatic tools which includes a split ring valve slidably arranged in a cir- cumferential groove formed in a cage member affixed to the rotor shaft of the tool. When the cage member exceeds a pre- determined rotational speed, the ring valve expands and is moved, by pressure differential acting thereupon, into engage- ment with a valve seat to block holes in a flow circuit for pneumatic medium being conducted to the rotor of the tool whereby tool operation is terminated.

361533

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