Fail-safe actuator with fusible link

Details Fail-safe actuator with fusible link Fail-safe actuator with fusible link

1982-02-26

1985-03-12

Ostrager, Allen M.

Power plants

Motor operated by expansion and/or contraction of a unit of...

Mass is a solid

137 72, 169 40, 169 38, 251 66, F16K 1740

Patent

active

045036756

ABSTRACT:
An apparatus for moving a controlled member, as for example a valve, to a predetermined position in response to temperature conditions includes a bearing member which overcomes a force exerted by an energy storage device within a predetermined temperature range. The bearing member includes a fusible material which melts in another predetermined temperature range to enable the force exerted by the energy storage device to overcome the bearing member and to move the controlled member to a fail-safe position.

REFERENCES:
patent: 1891183 (1932-12-01), Rowley
patent: 2860649 (1958-11-01), Billian
patent: 2962035 (1960-11-01), Wright et al.
patent: 3378021 (1968-04-01), Milo
patent: 3726299 (1973-04-01), Wheatley, Jr.
patent: 3896835 (1975-07-01), Wicke
patent: 4275754 (1981-06-01), Lyons et al.

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