Actuator with osmotic pressure actuation

Buckles – buttons – clasps – etc. – Separable-fastener or required component thereof – Including member having distinct formations and mating...

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24603, 244122R, 210637, B64D 1732

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active

046371010

ABSTRACT:
An actuator/sensor responsive to concentration of a substance in a liquid comprising a case containing in a rigid chamber a liquid of lesser concentration of that substance, and an exit opening at least in part occluded by a membrane possessing osmotic properties, whereby when a sufficiently concentrated solution contacts the membrane outside the chamber, liquid in the chamber leaves in an attempt to dilute the more concentrated solution, creating a lesser pressure which can be utilized as a signal or actuating power. Actuating means such as a retention pin can be moved from a ready to an actuated position as a function of the lowering of pressure in the compartment.

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patent: 4014080 (1977-03-01), Caradec
patent: 4095313 (1978-06-01), Piljay

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