Optical actuator

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United States of America Patent

PATENT NO 4637071
SERIAL NO

06675677

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An arrangement for the remote actuation of a controlled device, e.g. a hydraulic valve, in situations with stringent safety requirements, uses optical power. The optical power, e.g. from a high-power laser, is conveyed via an optical fibre (1) to the controlled device. Here it falls on a heat-absorbent surface (2), as a result of which a volatile fluid (e.g. freon) is evaporated. This via a bellows (4) drives an output rod (5), which operates the controlled device. Alternatives include a bimetallic strip, a thermostat-type capsule, and a memory metal strip, as the heat responsive device.

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Patent Owner(s)

Patent OwnerAddress
INTERNATIONAL STANDARD ELECTRIC CORPORATION320 PARK AVENUE NEW YORK NEW YORK 10022

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Batchelder, David N London, GB2 12 586
Jones, Roger E Little Shelford, GB2 10 123
Neat, Rosamund C London, GB2 4 43
Pitt, Gillies D Saffron Walden, GB2 14 329

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