Regulating device for pressure fluid actuated apparatus

Details Regulating device for pressure fluid actuated apparatus Regulating device for pressure fluid actuated apparatus

1977-10-19

1980-12-30

Schwadron, Martin P.

Dentistry

Apparatus

Including activator or regulator for controller or drive

251295, 74512, 137362, 222179, F16K 3162

Patent

active

042420881

ABSTRACT:
Improved actuator for a control valve especially useful for a compressed air-operated dentist's drill comprises a foot actuated roller connected to provide axial movement through a screw threaded connection to a spring-biased valve control element.

REFERENCES:
patent: 1468378 (1923-09-01), Cummings
patent: 1494910 (1924-05-01), Hench
patent: 1530894 (1925-03-01), Hayes
patent: 1739408 (1929-12-01), Medrano et al.
patent: 2069349 (1937-02-01), Bergschicker
patent: 2235850 (1941-03-01), Rubissow
patent: 2933284 (1960-04-01), Yocum
patent: 3232568 (1966-02-01), Lennon et al.
patent: 3305207 (1967-02-01), Calderoni
patent: 3742167 (1973-06-01), Muther

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