Power plants – Fluid within expansible chamber heated or cooled – Having control means for heating or cooling means
Patent
1991-11-08
1993-02-16
Ostrager, Allen M.
Power plants
Fluid within expansible chamber heated or cooled
Having control means for heating or cooling means
60508, 60512, 60513, 60509, F01B 2900
Patent
active
051860015
ABSTRACT:
A microdevice in the form of a microactuator or micropump. A microdevice for providing reciprocating motion at a high repetition rate, including a cell having an output wall with at least a portion movable, such as a diaphragm or inlet and outlet valves. A charge of gas in the cell and a source for cyclicly and directly heating the gas to increase the gas pressure in the cell and move the diaphragm or control the valves, the source for heating including a pulsed source for generating transient gas pressure increases in the cell at cycle times of not more than about 50 microseconds, with the cell including an arrangement for cooling the gas for reducing the gas pressure in the cell. In one embodiment, the source for heating includes a source of photons and an arrangement for directing the photons into the cell to the gas or to the cell inner surface. In another embodiment, the source for heating includes a thin film of resistance heating material on an inner surface of the cell, and an arrangement for connecting a pulsed electric power source to the film. Another embodiment includes an arrangement for producing electrical discharge pulses within the cell for heating the gas.
REFERENCES:
patent: 3995433 (1976-12-01), Dick
patent: 4006597 (1977-02-01), Dick
patent: 4697424 (1987-10-01), Dickerson et al.
patent: 4821997 (1989-04-01), Zdeblick
patent: 4824073 (1989-04-01), Zdeblick
patent: 4943032 (1990-07-01), Zdeblick
patent: 4966646 (1990-10-01), Zdeblick
patent: 5095699 (1992-03-01), Blackshear
A Microminiature Electric-to-Fluidic Valve, by Zdeblick and Angell from Transducers '87 p. 827.
Silicon Micromechanics: Sensors and Actuators on a Chip, by Howe and Muller in IEEE Spectrum Jul. 1990 p. 29.
Erwin Daniel A.
Kunc Joseph A.
Muntz Eric P.
Shiflett Geoffrey R.
Ostrager Allen M.
University of Southern California
LandOfFree
Transient energy release microdevices and methods does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transient energy release microdevices and methods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transient energy release microdevices and methods will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2140427