Patent US3931810A successfully refreshed from Google Patents.
US3931810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary-piston internal combustion engine
Assignee: Individual
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Filing: 1973-09-27
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Granted: 1976-01-13
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Expires: 1993-09-27
Abstract
Abstract A rotary-piston internal combustion engine having one or any number of rotary pistons, mounted in a cylindrical cylinder block, the cylinder block being mounted for rotation in an elliptical casing, on a central hub associated with said casing. A central drive shaft is connected to the cylinder block for rotation therewith, and each cylinder provides one power stroke per revolution of the cylinder block. Each cylinder is provided with a push rod, adapted to be restrained against the interior of the cylindrical wall of the engine casing. The engine is self-lubricating, and eliminates the need for a crankshaft, has a minimum of moving parts and thus friction points are minimal provides a hugh power-to-weight ratio and minimizes exhaust emissions. Ignition may be either by spark means, or by dieseling.
Inventors
- 👤 Wendell H. McGathey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:15
CPC Classifications
F; F02; F02B; F02B57/00; F02B57/08; F02B57/10; F01; F01B; F01B1/00; F01B1/06; F01B1/0641; F01B1/0655; F01B1/0658; F01B13/00; F01B13/04; F01B13/06; F01B13/061; F03; F03C; F03C1/00; F03C1/02; F03C1/04; F03C1/0403; F03C1/0435; F03C1/0438
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
338 words
A rotary-piston internal combustion engine comprising: an elliptical engine casing having an inner wall and a central, cylindrical hub; a retaining ring affixed to said hub; a circular block centrally mounted within said casing for rotation therein and around said hub, and having at least one radial cylinder adapted to receive a piston for reciprocation therein; at least one sealing vane on each side of said cylinder; first spring means abutting each of said sealing vanes for urging each of said sealing vanes towards said hub to ride thereon; second spring means within each of said sealing means for urging each of said sealing vanes towards said retaining ring to ride thereon; a first pair of sealing rings mounted in said block adjacent to each of said vanes, each pair of sealing rings being spring urged to ride against said retainer ring and the wall of said elliptical casing respectively, said vanes and sealing rings preventing leakage of fuel vapor and combustion gases from said cylinder; a vent in said cylinder block between said cylinders communicating at one end with the space between adjacent sealing vanes and at its other end with means connected to an intake manifold associated with said engine; a second pair of sealing rings on each side of said port, mounted in said block and being spring urged against the wall of the elliptical casing; a piston, disposed within said radial cylinder, having an associated push rod projecting therefrom toward said casing, said push rod terminating in a bearing adapted to be restrained against the inner wall of said casing; an igniting means provided in said hub in radial alignment at or near the conjugate axis of said elliptical casing; a fuel intake port and an exhaust port provided in said hub substantially opposite said igniting means, said fuel intake port and said exhaust port being approximately equidistant from the conjugate axis of said elliptical casing; and central drive shaft means within said hub on which said cylinder block is mounted, for rotation therewith.
Claim 2
Dependent Claim
338 words
A rotary-piston internal combustion engine comprising: an elliptical engine casing having an inner wall and a central, cylindrical hub; a retaining ring affixed to said hub; a circular block centrally mounted within said casing for rotation therein and around said hub, and having at least one radial cylinder adapted to receive a piston for reciprocation therein; at least one sealing vane on each side of said cylinder; first spring means abutting each of said sealing vanes for urging each of said sealing vanes towards said hub to ride thereon; second spring means within each of said sealing means for urging each of said sealing vanes towards said retaining ring to ride thereon; a first pair of sealing rings mounted in said block adjacent to each of said vanes, each pair of sealing rings being spring urged to ride against said retainer ring and the wall of said elliptical casing respectively, said vanes and sealing rings preventing leakage of fuel vapor and combustion gases from said cylinder; a vent in said cylinder block between said cylinders communicating at one end with the space between adjacent sealing vanes and at its other end with means connected to an intake manifold associated with said engine; a second pair of sealing rings on each side of said port, mounted in said block and being spring urged against the wall of the elliptical casing; a piston, disposed within said radial cylinder, having an associated push rod projecting therefrom toward said casing, said push rod terminating in a bearing adapted to be restrained against the inner wall of said casing; an igniting means provided in said hub in radial alignment at or near the conjugate axis of said elliptical casing; a fuel intake port and an exhaust port provided in said hub substantially opposite said igniting means, said fuel intake port and said exhaust port being approximately equidistant from the conjugate axis of said elliptical casing; and central drive shaft means within said hub on which said cylinder block is mounted, for rotation therewith.
Claim 3
Dependent Claim
47 words
A rotary-piston internal combustion engine according to claim 1 further including: a bearing track affixed to the inner wall of of said elliptical casing; and wherein said push rod bearings comprise at least one roller bearing which is restrained in said bearing track for rotary travel therein.
Claim 4
Dependent Claim
47 words
A rotary-piston internal combustion engine according to claim 1, further including: third spring means encircling siad push rod for urging said push rod bearing away from said cylinder block wherein said push rod bearings are in constant engagement with the interior elliptical wall of said engine casing.
Claim 5
Dependent Claim
20 words
A rotary-piston internal combustion engine according to claim 1, said cylinder block having a plurality of equally radially spaced cylinders.
Claim 6
Dependent Claim
15 words
A rotary-piston internal combustion engine according to claim 1, wherein said igniting means includes dieseling.
Claim 7
Dependent Claim
19 words
A rotary-piston internal combustion engine according to claim 1, wherein said igniting means comprises at least one spark plug.
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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) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |