Patent US4356697A successfully refreshed from Google Patents.
US4356697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat engines
Assignee: Individual
•
Filing: 1980-08-27
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Granted: 1982-11-02
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Expires: 2000-08-27
Abstract
Abstract A new heat engine is provided in the form of a pressure oscillation generation device having a chamber with two spaced apart walls, means on the outside of one wall continuously heating said one wall, means on the other of said walls continuously cooling said other wall, a thermal shield movable between said walls, means alternating said thermal shield back and forth between said walls whereby a heat expansible fluid contained in said chamber is alternately heated and cooled thereby causing said fluid to undergo alternate expansions and contractions.
Inventors
- 👤 Eugene W. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:02
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G2254/00; F02G2254/30
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
77 words
A pressure oscillation generation device comprising a chamber having two spaced apart walls, means on the outside of one wall continuously heating said one wall, means on the other of said walls continuously cooling said other wall, a thermal shield movable between said walls, means alternating said thermal shield back and forth between said walls whereby a gas contained in said chamber is alternately heated and cooled thereby causing said gas to undergo alternate expansion and contraction.
Claim 2
Dependent Claim
77 words
A pressure oscillation generation device comprising a chamber having two spaced apart walls, means on the outside of one wall continuously heating said one wall, means on the other of said walls continuously cooling said other wall, a thermal shield movable between said walls, means alternating said thermal shield back and forth between said walls whereby a gas contained in said chamber is alternately heated and cooled thereby causing said gas to undergo alternate expansion and contraction.
Claim 3
Dependent Claim
69 words
An apparatus as claimed in claim 1 wherein a cylinder communicates at one end with said chamber, a spring loaded power piston is movable in said cylinder and is urged toward said one end of the cylinder by said spring whereby said piston is alternately moved from said one end against the spring loading when the gas is heated and returned by said spring when the gas is cooled.
Claim 4
Dependent Claim
61 words
An apparatus as claimed in claim 1 having a check valve inlet port and a check valve outlet port communicating with said chamber whereby gas is drawn into the chamber during the cooling of the gas in said chamber and discharged under pressure during the heating of the gas in said chamber to provide a source of compressed gas under pressure.
Claim 5
Dependent Claim
39 words
The apparatus as claimed in claim 1 or 3 wherein a gas turbine is connected to said chamber and supplied with pressurized gas therefrom to drive said turbine, and an electric generator connected to said turbine and driven thereby.
Claim 6
Dependent Claim
16 words
An apparatus as claimed in claim 4 having an accumulator between said chamber and said turbine.
Claim 7
Dependent Claim
66 words
An apparatus as claimed in claim 2 wherein said cylinder is provided at the said other end with a fluid inlet port and a fluid outlet port, check valve means in each of said fluid inlet and fluid outlet ports, said inlet port being connected to a source of fluid whereby said fluid is alternately drawn into said chamber and discharged from said chamber under pressure.
Claim 8
Dependent Claim
37 words
An apparatus as claimed in claim 6 wherein a gas turbine is connected to the outlet port of said cylinder and driven by pressurized gas therefrom, and an electric generator connected to said turbine and driven thereby.
Claim 9
Dependent Claim
18 words
An apparatus as claimed in claim 7 having an accumulator between said cylinder outlet port and said turbine.
Claim 10
Dependent Claim
25 words
An apparatus as claimed in claim 1 or 2 or 3 or 4 or 6 or 7 or 8 wherein the fluid is a gas.
Claim 11
Dependent Claim
24 words
An apparatus as claimed in claim 1 or 2 or 3 or 4 or 6 or 7 or 8 wherein the fluid is air.
Claim 12
Dependent Claim
18 words
An apparatus as claimed in claim 1 or 3 having outlet means connected to a fluid operated tool.
Claim 13
Dependent Claim
72 words
An apparatus as claimed in claim 1 having a check valve inlet port and a check valve outlet port communicating with said chamber, said check valve inlet port being connected to an adjacent vessel to be evacuated whereby fluid is drawn from said adjacent vessel through the inlet port during cooling of fluid in the chamber and discharged to atmosphere through the outlet port during the heating of fluid in the chamber.
Claim 14
Dependent Claim
53 words
An apparatus as claimed claim 1 wherein the chamber is filled with gas under pressure and the cooled wall is flexible, a piezoelectric device fixed to said cooled wall such that pressure oscillations in the chamber are transmitted through the flexible wall to said piezoelectric device causing alternating electric current to be generated.
Claim 15
Dependent Claim
44 words
An apparatus as claimed in claim 1 in the form of a flat plate solar collector wherein the one wall is transparent and directed toward the sun and the face of the thermal shield toward said one wall is a black heat absorbing surface.
References Cited (Backward Citations)
US3732040A
Cited
SU688689A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |