Actuator for converting linear motion to rotary motion and vice

Details Actuator for converting linear motion to rotary motion and vice Actuator for converting linear motion to rotary motion and vice

1986-09-15

1987-12-08

Hershkovitz, Abraham

Expansible chamber devices

Rectilinearly moving working member and coaxial or parallel...

74 99A, 74109, 92136, 92140, F01B 300

Patent

active

047111577

ABSTRACT:
A linear to rotary actuator is disclosed having a fluid pressure operated diaphragm whose linear movement is translated into rotary movement of an output member by a helical coupling therebetween. The coupling comprises a coupling member that is insert molded in the diaphram so as to extend therethrough and interlock therewith while preventing fluid from passing from one diaphragm side to the other. The coupling member has a combined guide and anti-rotation portion extending from one side of the diaphragm that slidably engages a stationary guide so as to guide linear movement while preventing rotational movement of the coupling member and further has a helix extending from the other side of the diaphragm that slidably engages in a slot in a section that meshes with a gear connected to the output member whereby linear movement of the diaphragm forces linear non-rotational movement of the coupling memmer and thereby rotary movement of the output member.

REFERENCES:
patent: 1885367 (1932-11-01), McKee
patent: 2509227 (1950-05-01), Gordy
patent: 2883144 (1959-04-01), Kendig
patent: 3097608 (1963-07-01), Deibel
patent: 3478645 (1969-11-01), Canalizo
patent: 3866481 (1975-02-01), Fuchs
patent: 4193337 (1980-03-01), Disdier
patent: 4230025 (1980-10-01), Caliri
patent: 4325535 (1982-04-01), Foster
patent: 4613353 (1986-09-01), Voisine

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