Vented pneumatic foot controller

Details Vented pneumatic foot controller Vented pneumatic foot controller

1981-11-12

1983-11-01

Weldon, Ulysses

Electricity: motive power systems

Automatic and/or with time-delay means

Responsive to stress in body or material

318305, 200 81H, G05B 500

Patent

active

044132140

ABSTRACT:
A speed controlling arrangement for an electric motor is provided with a pneumatic foot controller which includes a bulb that is opened to the atmosphere between operative periods to equalize pressure in both the bulb and a transducer, but is closed when foot pressure is applied to the bulb to actuate the transducer.

REFERENCES:
patent: 595898 (1897-12-01), Whipple et al.
patent: 2267218 (1941-12-01), Reinecke
patent: 2550422 (1951-04-01), Naul
patent: 2561663 (1951-07-01), Keckley
patent: 2688821 (1954-09-01), Bunting
patent: 4169353 (1979-10-01), Fresard
patent: 4371762 (1983-02-01), Diamond

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