US3921404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion and steam powered engine
Assignee: TU N ONE PWR
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Filing: 1974-06-21
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Granted: 1975-11-25
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Expires: 1994-06-21
Abstract
Abstract A combination internal combustion and steam powered engine having a reciprocating piston and two separate chambers which increase and decrease in volume with movement of the piston. The piston is driven in one direction by the combustion of fuel in one chamber, and it is driven in the other direction by the evaporation of water and expansion of steam in the other chamber. The steam is generated by heating water with the heat produced by the combustion of the fuel in the first chamber and introducing measured amounts of the heated water into the second chamber where it evaporates and expands.
Inventors
- 👤 Lloyd R Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:06
CPC Classifications
F; F01; F01K; F01K21/00; F01K21/02; F01K23/00; F01K23/02; F01K23/06; F01K23/065
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
204 words
In an engine: an axially extending cylinder having a side wall, a cylinder head forming a closure at one end of the cylinder, an axially movable piston mounted in the cylinder and cooperating with the cylinder wall and cylinder head to form a first chamber of variable volume, an axially extending stationary piston mounted at the end of the cylinder opposite the cylinder head, an axially extending closed bore formed in the movable piston and opening through the end of said piston opposite the cylinder head for receiving the stationary piston therein, the stationary piston cooperating With the walls of the bore to form a second chamber of variable volume, means for introducing combustible fuel into the first chamber where combustion of the fuel serves to move the movable piston away from the cylinder head, means for exhausting combusted gas from the first chamber, means for heating water with heat energy produced by the combustion of fuel in the first chamber and introducing the heated water into the second chamber where it vaporizes to produce steam, expansion of the steam serving to cool said movable piston and to move it toward the cylinder head, and means for exhausting expanded steam from the second chamber.
Claim 2
Dependent Claim
204 words
In an engine: an axially extending cylinder having a side wall, a cylinder head forming a closure at one end of the cylinder, an axially movable piston mounted in the cylinder and cooperating with the cylinder wall and cylinder head to form a first chamber of variable volume, an axially extending stationary piston mounted at the end of the cylinder opposite the cylinder head, an axially extending closed bore formed in the movable piston and opening through the end of said piston opposite the cylinder head for receiving the stationary piston therein, the stationary piston cooperating With the walls of the bore to form a second chamber of variable volume, means for introducing combustible fuel into the first chamber where combustion of the fuel serves to move the movable piston away from the cylinder head, means for exhausting combusted gas from the first chamber, means for heating water with heat energy produced by the combustion of fuel in the first chamber and introducing the heated water into the second chamber where it vaporizes to produce steam, expansion of the steam serving to cool said movable piston and to move it toward the cylinder head, and means for exhausting expanded steam from the second chamber.
Claim 3
Dependent Claim
108 words
The engine of claim 1 wherein the means for heating water and introducing heated water into the second chamber comprises: a first water jacket disposed coaxially of the chamber wall, means for delivering water under pressure to the first water jacket, an exhaust jacket adjacent to the first water jacket for receiving hot exhaust gas from the first chamber, a second water jacket adjacent to the cylinder wall and heated thereby, means for delivering water from the first water jacket to the second water jacket and for delivering water from the second water jacket to the second chamber upon delivery of a pulse of water from the pump.
Claim 4
Dependent Claim
77 words
The engine of claim 2 wherein the means for delivering water to the first water jacket includes a pump for delivering a pressurized pulse of water when the movable piston is at the predetermined position in the cylinder and the means for delivering water to the second water jacket and second chamber comprise pressure responsive valves adapted to open in response to the pressure produced by the pump in delivering the pulse to the first water jacket.
Claim 5
Dependent Claim
22 words
The engine of claim 3 wherein the movable piston is connected to a crankshaft and the pump is driven by the crankshaft.
Claim 6
Dependent Claim
23 words
The engine of claim 2 wherein the exhaust jacket is formed in two sections disposed on opposite sides of the first water jacket.
Claim 7
Dependent Claim
19 words
The engine of claim 2 further including thermal insulation disposed between the second water jacket and the exhaust jacket.
Claim 8
Dependent Claim
37 words
The engine of claim 1 wherein the means for exhausting steam includes a valve mounted on the stationary piston and means for opening the valve when the movable piston is at a predetermined position in the cylinder.
Claim 9
Dependent Claim
38 words
The engine of claim 1 further including means for monitoring the temperature of the water and decreasing the amount of combustible fuel delivered to the first chamber in response to an increase in the temperature of the water.
References Cited (Backward Citations)
US1601995A
Cited
US2196980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |