Pneumatic throttle control

Details Pneumatic throttle control Pneumatic throttle control

1981-01-26

1984-11-20

Hershkovitz, Abraham

Motors: expansible chamber type

With signal, indicator or inspection means

91 59, 91447, 91458, 91520, F01B 2526

Patent

active

044832362

ABSTRACT:
A pneumatic throttle control configuration provides synchronized start-up and independent shut-off of multiple pneumatic tools. Each tool includes a throttle control assembly having a manually operable throttle valve which selectively admits air to the vane motor of the tool and a spring-biased piston operably coupled to the throttle valve which maintains it in an open position in response to air pressure in a control line which interconnects the tools. The vane motor includes a governor controlled valve which opens at a predetermined motor speed and provides air to the control line and the pistons of each tool of the multiple tool arrangement, thereby opening every throttle valve. Each pneumatic tool may then operate and stall independently. When the last tool stalls, the control air flow to all tools is terminated and the throttle valves close.

REFERENCES:
patent: 3904305 (1975-09-01), Boyd
patent: 4243111 (1981-01-01), Willoughby
patent: 4263938 (1981-04-01), Peters

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