US3993036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Individual
•
Filing: 1974-08-27
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Granted: 1976-11-23
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Expires: 1994-08-27
Abstract
Abstract An internal combustion engine comprising a cylinder head with a rotary intake and exhaust valves mounted on the head, the head being interchangeable with cylinder blocks intended for conventional poppet type valve engines. According to a basic aspect of the invention, primary and secondary combustion chambers are provided which are isolated from each other by the piston when at the top of its stroke, enabling combustion to initially take place in the primary chamber with a reduced amount of fuel. Optionally, means are further provided to vary the intake valve opening in accordance with changes in speed of the engine.
Inventors
- 👤 Wald E. Tischler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
F; F01; F01L; F01L7/00; F01L7/02; F01L7/026; F01L7/027
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
An internal combustion engine comprising a cylinder block having a cylinder, a piston movable through a stroke in said cylinder, a cylinder head on said block, a rotary valve comprising a stator sleeve on said cylinder head and a rotor sleeve rotatable in said stator sleeve; said stator sleeve having a port communicating with said cylinder, said rotor sleeve having a port for uncovering said stator port, a shutter rotatably supported by said rotor and means tending to move said shutter to at least partially cover said rotor port, said shutter being effective upon increase in engine speed to react against said last mentioned means whereby to uncover a greater amount of said rotor port.
Claim 2
Dependent Claim
115 words
An internal combustion engine comprising a cylinder block having a cylinder, a piston movable through a stroke in said cylinder, a cylinder head on said block, a rotary valve comprising a stator sleeve on said cylinder head and a rotor sleeve rotatable in said stator sleeve; said stator sleeve having a port communicating with said cylinder, said rotor sleeve having a port for uncovering said stator port, a shutter rotatably supported by said rotor and means tending to move said shutter to at least partially cover said rotor port, said shutter being effective upon increase in engine speed to react against said last mentioned means whereby to uncover a greater amount of said rotor port.
Claim 3
Dependent Claim
30 words
An internal combustion engine as defined in claim 1 wherein said last mentioned means comprises spring means normally holding said shutter over at least a portion of said rotor port.
Claim 4
Dependent Claim
92 words
An internal combustion engine comprising a cylinder block having a cylinder, a piston movable through a stroke in said cylinder, a rotary intake valve comprising a stator sleeve and a rotor sleeve rotatable in said stator sleeve; said stator sleeve having a port communicating with said cylinder, said rotor having a port for uncovering said stator port during rotation of said rotor, means for rotating said rotor, means for supplying an explosive gas to said rotor, and means operable by said rotating means for causing turbulence of said gas in said rotor.
Claim 5
Dependent Claim
92 words
An internal combustion engine comprising a cylinder block having a cylinder, a piston movable through a stroke in said cylinder, a rotary intake valve comprising a stator sleeve and a rotor sleeve rotatable in said stator sleeve; said stator sleeve having a port communicating with said cylinder, said rotor having a port for uncovering said stator port during rotation of said rotor, means for rotating said rotor, means for supplying an explosive gas to said rotor, and means operable by said rotating means for causing turbulence of said gas in said rotor.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-23 | 1980-05-24 | 1980-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-23 | 1984-05-24 | 1984-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-23 | 1988-05-24 | 1988-11-23 | $7700.00 | Window Closed / Lapsed |