Rotary spring-return actuator with safety feature

Details Rotary spring-return actuator with safety feature Rotary spring-return actuator with safety feature

1977-07-07

1978-12-19

Herrmann, Allan D.

Motors: spring, weight, or animal powered

Spring

Spring mounting

185 40R, F03G 106, F16K 3104

Patent

active

041301820

ABSTRACT:
A rotary spring-return actuator is provided with a combination safety clutch and travel stop wherein the safety clutch is secured relative to the housing of the spring-return actuator in such a manner as to insure that the potential energy within the spring of the spring-return will be completely dissipated before access to the interior of the housing may be effected.

REFERENCES:
patent: 1292267 (1919-01-01), Dawson et al.
patent: 3120291 (1964-02-01), Nicholas et al.
patent: 3122351 (1964-02-01), Brown
patent: 3161014 (1964-12-01), Abild
patent: 3279744 (1966-10-01), Fieldsen et al.
patent: 3306317 (1967-02-01), Brown
patent: 3592991 (1971-07-01), Turner et al.
patent: 3808895 (1974-05-01), Fitzwater
patent: 3889924 (1975-06-01), Karpenko

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