Rotary pneumatic tool with valve-closing pin actuated upon overs

Details Rotary pneumatic tool with valve-closing pin actuated upon overs Rotary pneumatic tool with valve-closing pin actuated upon overs

1979-03-28

1981-05-05

Vrablik, John J.

Rotary expansible chamber devices

Speed controlled

Weight rotates about axially extending axis

137 57, F01C 2112, G05D 1304

Patent

active

042656044

ABSTRACT:
A pneumatic tool includes a fluid motor with a rotor and passages for connecting the rotor with a source of fluid under pressure. A normally open valve is interposed in the passages and movable to a closed position in which it interrupts the flow of fluid to the rotor. An actuator is located on the rotor and operative, in response to the rotor exceeding a predetermined speed of revolutions, to move from a neutral into an actuating position in which it engages the valve and moves the same to the closed position thereof.

REFERENCES:
patent: 2586968 (1952-02-01), Maclay
patent: 3519372 (1970-07-01), Peale
patent: 3767332 (1973-10-01), Wickham et al.
patent: 3923429 (1975-12-01), Schaedler et al.
patent: 4090821 (1978-05-01), Barrows et al.
patent: 4184819 (1980-01-01), Clark

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