Patent US3886911A successfully refreshed from Google Patents.
US3886911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion trocoidal rotary engines with rotatable intake and exhaust ports
Assignee: Individual
•
Filing: 1973-12-17
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Granted: 1975-06-03
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Expires: 1993-12-17
Abstract
Abstract This invention pertains to both standard and double action rotary piston internal combustion engines whose intake and exhaust ports are automatically advanced and retarded with respect to the rotating piston, through the entire engine speed range.
Inventors
- 👤 Otto G Glatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:37
CPC Classifications
F; F02; F02B; F02B53/00; F02B53/04; F02B53/06; F02B2053/005; F02F; F02F7/00; F02F7/0085; F02F2007/0092; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S60/00; Y10S60/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
A rotary internal combustion engine of the trochoidal type comprising: a housing having epitrochoidal inner chamber of at least two lobes, a triangularly shaped rotor eccentrically journalled within said housing, seal means on said rotor whereby said seal means are in sealing relationship with the surface of said epitrochoidal chamber, at least two spark plugs mounted on said housing, an intake port means and an exhaust port means, each of said port means having a variable opening means for rotatably journalling said intake port means and exhaust port means on said housing, and means responsive to the speed of said engine for controlling the rotation of said respective port means to vary the exposed opening of said respective variable port opening accordingly whereby the size of the port opening increases with engine speed.
Claim 2
Dependent Claim
133 words
A rotary internal combustion engine of the trochoidal type comprising: a housing having epitrochoidal inner chamber of at least two lobes, a triangularly shaped rotor eccentrically journalled within said housing, seal means on said rotor whereby said seal means are in sealing relationship with the surface of said epitrochoidal chamber, at least two spark plugs mounted on said housing, an intake port means and an exhaust port means, each of said port means having a variable opening means for rotatably journalling said intake port means and exhaust port means on said housing, and means responsive to the speed of said engine for controlling the rotation of said respective port means to vary the exposed opening of said respective variable port opening accordingly whereby the size of the port opening increases with engine speed.
Claim 3
Dependent Claim
133 words
A rotary internal combustion engine of the trochoidal type comprising: a housing having epitrochoidal inner chamber of at least two lobes, a triangularly shaped rotor eccentrically journalled within said housing, seal means on said rotor whereby said seal means are in sealing relationship with the surface of said epitrochoidal chamber, at least two spark plugs mounted on said housing, an intake port means and an exhaust port means, each of said port means having a variable opening means for rotatably journalling said intake port means and exhaust port means on said housing, and means responsive to the speed of said engine for controlling the rotation of said respective port means to vary the exposed opening of said respective variable port opening accordingly whereby the size of the port opening increases with engine speed.
Claim 4
Dependent Claim
133 words
A rotary internal combustion engine of the trochoidal type comprising: a housing having epitrochoidal inner chamber of at least two lobes, a triangularly shaped rotor eccentrically journalled within said housing, seal means on said rotor whereby said seal means are in sealing relationship with the surface of said epitrochoidal chamber, at least two spark plugs mounted on said housing, an intake port means and an exhaust port means, each of said port means having a variable opening means for rotatably journalling said intake port means and exhaust port means on said housing, and means responsive to the speed of said engine for controlling the rotation of said respective port means to vary the exposed opening of said respective variable port opening accordingly whereby the size of the port opening increases with engine speed.
Claim 5
Dependent Claim
15 words
The invention as defined in claim 1 wherein said respective port openings are tear shaped.
Claim 6
Dependent Claim
31 words
The invention as defined in claim 1 wherein said housing includes an interior smooth side wall, and said intake port means and exhaust port means are disposed in said side wall.
Claim 7
Dependent Claim
67 words
The invention as defined in claim 3 wherein each of said port means comprises port housing rotatably journalled in said side wall, a ring gear journalled to said port housing, and said means responsive to said engine speed includes, a gear plunger disposed in meshing relationship with said ring gear, and hydraulic pump for activating said gear plunger, and means connecting said hydraulic pump to said engine.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |