US3763649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot gas rotary piston engine
Assignee: Daimler Benz AG
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Filing: 1971-03-29
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Granted: 1973-10-09
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Expires: 1991-03-29
Abstract
Abstract A hot gas engine in the form of a rotary piston engine of trochoidal construction in which two rotary piston engines operate with predetermined phase displacement, of which one is constructed as hot gas section and the other one as cold gas section; each rotary piston engine includes a triangular piston rotatably supported on an eccentric shaft within an epitrochoidally shaped two-arched housing case whereby inlet and outlet openings are provided in the contact surface of the casing in front and to the rear of the minor axis; the inlet and outlet openings are arranged both in the hot gas section as also in the cold gas section mutually opposite one another and are connected with each other by way of branch lines provided with control devices and main lines that include heaters, regenerators and coolers interconnected in the main lines.
Inventors
- 👤 J Wahnschaffe
- 👤 D Gwinner
- 👤 E Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:05
CPC Classifications
F; F02; F02B; F02B53/00; F02B2053/005; F02B2730/00; F02B2730/01; F02B2730/018; F02G; F02G2244/00; F02G2244/50; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
222 words
A hot gas engine comprising first and second troichoidal chambers, said first chamber being constructed as a hot gas section and said second chamber being constructed as a cold gas section, a polygonal piston rotatably mounted in each chamber, two inlet ports and two outlet ports in each of said chambers, said inlet ports being arranged diagonally opposite one another at first and second sides of each of said chambers, said outlet ports being arranged diagonally opposite one another at said first and second sides of each of said chambers, a first branch line means communicating directly with the inlet port at the first side of the first chamber, a second branch line means communicating directly with the outlet port at the first side of the first chamber, a third branch line means communicating directly with the inlet port at the first side of the second chamber, a fourth branch line means communicating directly with the outlet port at the first side of the second chamber, first main line means, first control valve means for selectively communicating one of the first and second branch line means with one end of said first main lines means, and second control valve means for selectively communicating one of the third and fourth branch line means with the opposite end of said first main line means.
Claim 2
Dependent Claim
222 words
A hot gas engine comprising first and second troichoidal chambers, said first chamber being constructed as a hot gas section and said second chamber being constructed as a cold gas section, a polygonal piston rotatably mounted in each chamber, two inlet ports and two outlet ports in each of said chambers, said inlet ports being arranged diagonally opposite one another at first and second sides of each of said chambers, said outlet ports being arranged diagonally opposite one another at said first and second sides of each of said chambers, a first branch line means communicating directly with the inlet port at the first side of the first chamber, a second branch line means communicating directly with the outlet port at the first side of the first chamber, a third branch line means communicating directly with the inlet port at the first side of the second chamber, a fourth branch line means communicating directly with the outlet port at the first side of the second chamber, first main line means, first control valve means for selectively communicating one of the first and second branch line means with one end of said first main lines means, and second control valve means for selectively communicating one of the third and fourth branch line means with the opposite end of said first main line means.
Claim 3
Dependent Claim
142 words
A hot gas engine according to claim 1, further comprising a fifth branch line means communicating directly with the inlet port at the second side of the first chamber, a sixth branch line means communicating directly with the outlet port at the second side of the first chamber, a seventh branch line means communicating directly with the inlet port at the second side of the second chamber, an eigth branch line means communicating directly with the outlet port at the second side of the second chamber, second main line means, third control valve means for selectively communicating one of the fifth and sixth branch line means with one end of said second main line means, and fourth control valve means for selectively communicating one of the seventh and eigth branch line means with the opposite end of said second main line means.
Claim 4
Dependent Claim
23 words
A hot gas engine according to claim 2, further comprising heating means arranged in each of said first and second main line means.
Claim 5
Dependent Claim
47 words
A hot gas engine according to claim 3, further comprising regenerator means and cooler means in each of said first and second main line means, wherein said heater means, regenerator means and cooler means are arranged in series relationship to one another in the main line means.
Claim 6
Dependent Claim
29 words
A hot gas engine according to claim 1, wherein the position of said first and second control valve means is dependent on the instantaneous position of the engine pistons.
Claim 7
Dependent Claim
22 words
A hot gas engine according to claim 1, wherein said first and second control valve means are constructed as rotary slide valves.
Claim 8
Dependent Claim
36 words
A hot gas engine according to claim 6, wherein said rotary slide valves are interconnected to the engine pistons so as to rotate at a predetermined rate with respect to the rotational rate of the pistons.
Claim 9
Dependent Claim
26 words
A hot gas engine according to claim 2, wherein each of said first, second, third and fourth control valve means are constructed as rotary slide valves.
Claim 10
Dependent Claim
36 words
A hot gas engine according to claim 8, wherein said rotary slide valves are interconnected to the engine pistons so as to rotate at a predetermined rate with respect to the rotational rate of the pistons.
Claim 11
Dependent Claim
36 words
A hot gas engine according to claim 1, wherein communication of respective first and second branch line means with respective Third and fourth branch line means is only by way of said first main line means.
Claim 12
Dependent Claim
73 words
A hot gas engine according to claim 2, wherein communication of respective branch line means at one chamber with respective branch line means at the other chamber is only by way of said first and second main line means such that flow takes place in one direction in the respective main line means during part of the engine operating cycle and in the opposite direction during another part of the engine operating cycle.
Claim 13
Dependent Claim
73 words
A hot gas engine according to claim 4, wherein communication of respective branch line means at one chamber with respective branch line means at the other chamber is only by way of said first and second main line means such that flow takes place in one direction in the respective main line means during part of the engine operating cycle and in the opposite direction during another part of the engine operating cycle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |