Switching system for an air-driven tool

Details Switching system for an air-driven tool Switching system for an air-driven tool

1981-09-01

1983-08-23

Parker, Roscoe V.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

55310, 55313, 15387, 415 26, B24B 2300

Patent

active

043996388

ABSTRACT:
A turbine-driven sander includes a switching system having a double-flap valve adjacent a passageway intermediate the turbine and a source of vacuum. One flap valve is a toggle which is actuated to open or close a bypass aperture, and which is connected to close and open, respectively, the other flap valve, which is mounted in the passageway. When the toggle opens the bypass aperture the turbine stops; conversely, when the toggle closes the bypass aperture, the turbine becomes activated and remains activated until the toggle opens the bypass aperture or the source of vacuum is removed or no longer produces a vacuum. When activated, the turbine vibrates a platen through a direct drive system.

REFERENCES:
patent: 1323925 (1919-12-01), Stewart
patent: 2904816 (1959-09-01), Skolfield
patent: 2904817 (1959-09-01), Brennan
patent: 3071799 (1963-01-01), Jepson et al.

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