Micromechanism linear actuator with capillary force sealing

Details Micromechanism linear actuator with capillary force sealing Micromechanism linear actuator with capillary force sealing

1994-06-07

1997-07-22

Husar, Stephen F.

Power plants

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

Mass is a liquid

60516, 60370, F03G 700

Patent

active

056494238

ABSTRACT:
A class of micromachine linear actuators whose function is based on gas driven pistons in which capillary forces are used to seal the gas behind the piston. The capillary forces also increase the amount of force transmitted from the gas pressure to the piston. In a major subclass of such devices, the gas bubble is produced by thermal vaporization of a working fluid. Because of their dependence on capillary forces for sealing, such devices are only practical on the sub-mm size scale, but in that regime they produce very large force times distance (total work) values.

REFERENCES:
patent: 3183672 (1965-05-01), Morgan
patent: 4016722 (1977-04-01), Niederer, Sr.
patent: 4104507 (1978-08-01), Tisone et al.
patent: 4742678 (1988-05-01), Bartholomew et al.

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