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Title: Micromechanism linear actuator with capillary force sealing

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.

Inventors:
 [1]
  1. Albuquerque, NM
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
871054
Patent Number(s):
5649423
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F15 - FLUID-PRESSURE ACTUATORS F15B - SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03G - SPRING, WEIGHT, INERTIA OR LIKE MOTORS
DOE Contract Number:  
AC04-76
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
micromechanism; linear; actuator; capillary; force; sealing; micromachine; actuators; function; based; gas; driven; pistons; forces; seal; piston; increase; amount; transmitted; pressure; major; subclass; devices; bubble; produced; thermal; vaporization; fluid; dependence; practical; sub-mm; size; scale; regime; produce; times; distance; total; values; linear actuators; linear actuator; capillary forces; thermal vapor; gas pressure; gas bubble; gas driven; /60/

Citation Formats

Sniegowski, Jeffry J. Micromechanism linear actuator with capillary force sealing. United States: N. p., 1997. Web.
Sniegowski, Jeffry J. Micromechanism linear actuator with capillary force sealing. United States.
Sniegowski, Jeffry J. Wed . "Micromechanism linear actuator with capillary force sealing". United States. https://www.osti.gov/servlets/purl/871054.
@article{osti_871054,
title = {Micromechanism linear actuator with capillary force sealing},
author = {Sniegowski, Jeffry J},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}

Patent:

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