Patent US3629967A successfully refreshed from Google Patents.
US3776201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust arrangement in a rotary-piston internal combustion engine
Assignee: Individual
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Filing: 1972-08-30
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Granted: 1973-12-04
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Expires: 1992-08-30
Abstract
Abstract In a rotary-piston, internal combustion engine in which pistons rotate about the axis of a cylindrical casing in circumferentially consecutive relationship in sealing engagement with the casing and move angularly relative to each other in such a manner that each pair of circumferentially consecutive pistons defines a combustion chamber of the engine which expands and contracts during rotation, the casing is formed with an intake port for admitting a fuel mixture to the expanding chambers and with an exhaust port and an auxiliary port juxtaposed circumferentially in the direction of piston movement for releasing the spent fuel mixture as combustion gases from the contracting chambers. A conduit extends from the exhaust port outward of the casing and terminates in a tapering, open nozzle. Another conduit extends from the auxiliary port and has a throat portion spacedly enveloping the nozzle so as to form a jet pump or ejector pump therewith, the pressure of the combustion gas discharged from the nozzle drawing additional gas at lower pressure from the combustion compartment.
Inventors
- 👤 H Sabet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:50
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/02; F01C1/063; F02; F02B; F02B2730/00; F02B2730/09; F02B53/00; Y; Y10; Y10S; Y10S60/00; Y10S60/901
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
218 words
An exhaust arrangement in an internal-combustion, rotarypiston engine having a cylindrical casing including a wall of circular cross section perpeNdicular to an axis of said wall, said wall being formed with an intake port for admitting a fluid to said casing and with an exhaust port for releasing fluid from said casing, the improvement which comprises: a. said intake port and said exhaust port being offset from each other in the direction of said axis, and circumferentially relative to said axis, b. said wall being formed with an auxiliary port circumferentially interposed between said intake and exhaust ports, said auxiliary port extending in a common plane perpendicular to said axis with said exhaust port, the circumferential spacing of said auxiliary port from said intake port and from said exhaust port being substantially smaller than the circumferential width of any one of said ports, c. a first conduit elongated in a radially outward direction and communicating with said exhaust port, said conduit having a terminal nozzle portion of reduced cross section remote from said wall, d. a second conduit communicating with said auxiliary port and having a throat portion of reduced cross section spacedly enveloping said nozzle portion, said second conduit flaring in a direction radially outward of said throat portion, whereby said conduits jointly constitute an ejector pump.
Claim 2
Dependent Claim
218 words
An exhaust arrangement in an internal-combustion, rotarypiston engine having a cylindrical casing including a wall of circular cross section perpeNdicular to an axis of said wall, said wall being formed with an intake port for admitting a fluid to said casing and with an exhaust port for releasing fluid from said casing, the improvement which comprises: a. said intake port and said exhaust port being offset from each other in the direction of said axis, and circumferentially relative to said axis, b. said wall being formed with an auxiliary port circumferentially interposed between said intake and exhaust ports, said auxiliary port extending in a common plane perpendicular to said axis with said exhaust port, the circumferential spacing of said auxiliary port from said intake port and from said exhaust port being substantially smaller than the circumferential width of any one of said ports, c. a first conduit elongated in a radially outward direction and communicating with said exhaust port, said conduit having a terminal nozzle portion of reduced cross section remote from said wall, d. a second conduit communicating with said auxiliary port and having a throat portion of reduced cross section spacedly enveloping said nozzle portion, said second conduit flaring in a direction radially outward of said throat portion, whereby said conduits jointly constitute an ejector pump.
Claim 3
Dependent Claim
49 words
In an arrangement as set forth in claim 1, said second conduit having a chamber portion of greater cross section than said throat portion and extending from said throat portion in a direction outward of said casing, and igniting means for igniting a combustible fluid in said chamber portion.
Claim 4
Dependent Claim
25 words
In an arrangement as set forth in claim 2, said throat portion being formed with a restricted aperture therethrough, said aperture communicating with ambient atmosphere.
Claim 5
Dependent Claim
41 words
In an arrangement as set forth in claim 1, said casing being formed with an aperture therethrough, said aperture being circumferentially coextensive with said auxiliary port, having a flow section smaller than said auxiliary port, and communicating with the ambient atmosphere.
Claim 6
Dependent Claim
17 words
An arrangement as set forth in claim 4, said aperture being axially coextensive with said intake port.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |