US3902464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary internal combustion engine
Assignee: Individual
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Filing: 1973-11-07
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Granted: 1975-09-02
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Expires: 1993-11-07
Abstract
Abstract A sliding abutment rotary internal combustion engine with dual eccentric identically shaped rotors on a common shaft is described. The angle of eccentricity of the first rotor from the second rotor is 180* such that when the first rotor is inletting and then compressing a fuel-air mixture through a first 360* of rotation of the shaft, the second rotor is providing power by the combustion of a fuel-air mixture and then exhausting the combustion products through the second 360* of rotation of the shaft. A complete engine cycle is completed in 720* of shaft rotation. Valved conduit means are used for fuel-air inlet and combustion products exhaust to chambers formed by sliding abutment, engine housing and rotor. Particularly preferred valve actuating means for the rotary engine are described.
Inventors
- 👤 Joachim E Lay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:55
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/356; F01C1/3562; F01C1/3564; F01C11/00; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
419 words
A four-cycle rotary internal combustion engine which comprises: a. a shaft having spaced apart bearing surfaces separating two sections of the shaft around a longitudinal axis for journaled rotation of the shaft; b. two spaced apart identically shaped rotors mounted on the sections of the shaft between the bearing surfaces and eccentrIcally mounted on crankshaft such that the radius of maximum eccentricity from the longitudinal axis for the shaft of one rotor is 180* from the other rotor; c. dual housings mounting the shaft for journaled rotation of the rotors with spaced apart surfaces from the radii of maximum eccentricity of the rotor around the axis of rotation of the shaft; d. at least two sliding abutments resiliently mounted in each of the housings for continuous contact with the rotor through 360* of revolution of the shaft so as to form sealed compartments with the rotors; e. valved conduit means for air and fuel inlet and combustion products exhaust outlet in each of the compartments formed by the abutments and rotors, the valves extending to each compartment around the rotors having a head seating in the conduits in the housing for closure and having a shaft mounting the head and extending through and from the housing, with external compressed coil springs mounted on the shafts and housings to seat the valves; f. means for actuating the valves at the extension of the shaft from the housing including cam actuated levers mounted on the housing so as to pivot and depress each valve shaft in sequence, wherein the camming of the levers is provided by four cam surfaces for independent inlet and outlet valve opening around each rotor which are mounted between the rotors and geared to the rotor shaft so as to rotate at one-half the rate of rotation of the rotor shaft and wherein the cam surface rotation is regulated by a driving gear mounted on the shaft and multiple driven gears rotatably mounted to drive a ring gear bearing the cam surfaces; and g. openings to each of the compartments for fuel-air ignition means which are provided in each compartment wherein during operation of the engine one of the compartments on a first rotor provides in sequence fuel-air inlet through the fuel inlet valve means and then fuel-air compression through 360* of shaft rotation while the second rotor is providing in sequence fuel-air combustion and then combustion products exhaust through the exhaust valve means and then the sequence is reversed during two complete revolutions of each rotor.
Claim 2
Dependent Claim
419 words
A four-cycle rotary internal combustion engine which comprises: a. a shaft having spaced apart bearing surfaces separating two sections of the shaft around a longitudinal axis for journaled rotation of the shaft; b. two spaced apart identically shaped rotors mounted on the sections of the shaft between the bearing surfaces and eccentrIcally mounted on crankshaft such that the radius of maximum eccentricity from the longitudinal axis for the shaft of one rotor is 180* from the other rotor; c. dual housings mounting the shaft for journaled rotation of the rotors with spaced apart surfaces from the radii of maximum eccentricity of the rotor around the axis of rotation of the shaft; d. at least two sliding abutments resiliently mounted in each of the housings for continuous contact with the rotor through 360* of revolution of the shaft so as to form sealed compartments with the rotors; e. valved conduit means for air and fuel inlet and combustion products exhaust outlet in each of the compartments formed by the abutments and rotors, the valves extending to each compartment around the rotors having a head seating in the conduits in the housing for closure and having a shaft mounting the head and extending through and from the housing, with external compressed coil springs mounted on the shafts and housings to seat the valves; f. means for actuating the valves at the extension of the shaft from the housing including cam actuated levers mounted on the housing so as to pivot and depress each valve shaft in sequence, wherein the camming of the levers is provided by four cam surfaces for independent inlet and outlet valve opening around each rotor which are mounted between the rotors and geared to the rotor shaft so as to rotate at one-half the rate of rotation of the rotor shaft and wherein the cam surface rotation is regulated by a driving gear mounted on the shaft and multiple driven gears rotatably mounted to drive a ring gear bearing the cam surfaces; and g. openings to each of the compartments for fuel-air ignition means which are provided in each compartment wherein during operation of the engine one of the compartments on a first rotor provides in sequence fuel-air inlet through the fuel inlet valve means and then fuel-air compression through 360* of shaft rotation while the second rotor is providing in sequence fuel-air combustion and then combustion products exhaust through the exhaust valve means and then the sequence is reversed during two complete revolutions of each rotor.
Claim 3
Dependent Claim
15 words
The rotary engine of claim 1 wherein the surfaces in the housing are cylindrically shaped.
Claim 4
Dependent Claim
16 words
The rotary engine of claim 1 wherein the ignition means openings are adapted for spark plugs.
Claim 5
Dependent Claim
13 words
The rotary engine of claim 1 wherein the rotors have a cylindrical cross-section.
Claim 6
Dependent Claim
22 words
The rotary engine of claim 2 wherein there are six sliding abutments so as to provide six sealed compartments around each rotor.
Claim 7
Dependent Claim
19 words
The rotary engine of claim 1 wherein the driven gears are journaled by opposing outside portions of the housing.
Claim 8
Dependent Claim
269 words
In a rotary engine using two identically shaped rotors eccentrically mounted on a common shaft in two separate housings with the maximum eccentricity spaced 180* from each other; at least two sliding abutments resiliently mounted in each of the housings for continuous contact with the rotors throughout the revolution of the shaft so as to form sealed compression and then combustion chambers with the rotors; and fuel-air ignition means in each compression combustion chamber wherein during operation each of the chambers on one of the rotors is providing in sequence a fuel-air mixture through an inlet valved conduit means and then fuel-air compression through 360* of rotation while the other of the rotors is providing in sequence fuel-air combustion and then combustion products exhaust through an exhaust valved conduit means through a second 360* of rotation, wherein the inlet and exhaust valves have a shaft extending through and from the housing and wherein means for actuating the valves at the extension of the shaft from the housing is provided to open the valves the improvement which comprises: a. means for actuating the valve shafts including cam actuated levers mounted on the housing so as to pivot anD depress each valve shaft in sequence; and b. four cam surfaces camming the levers for independent inlet and outlet valve opening around each rotor which are mounted between the rotors and geared to the shaft so as to rotate at one-half the rate of rotation of the rotor shaft, wherein the cam surface rotation is regulated by the rotation of the shaft by means which drive a ring bearing the cam surfaces.
Claim 9
Dependent Claim
269 words
In a rotary engine using two identically shaped rotors eccentrically mounted on a common shaft in two separate housings with the maximum eccentricity spaced 180* from each other; at least two sliding abutments resiliently mounted in each of the housings for continuous contact with the rotors throughout the revolution of the shaft so as to form sealed compression and then combustion chambers with the rotors; and fuel-air ignition means in each compression combustion chamber wherein during operation each of the chambers on one of the rotors is providing in sequence a fuel-air mixture through an inlet valved conduit means and then fuel-air compression through 360* of rotation while the other of the rotors is providing in sequence fuel-air combustion and then combustion products exhaust through an exhaust valved conduit means through a second 360* of rotation, wherein the inlet and exhaust valves have a shaft extending through and from the housing and wherein means for actuating the valves at the extension of the shaft from the housing is provided to open the valves the improvement which comprises: a. means for actuating the valve shafts including cam actuated levers mounted on the housing so as to pivot anD depress each valve shaft in sequence; and b. four cam surfaces camming the levers for independent inlet and outlet valve opening around each rotor which are mounted between the rotors and geared to the shaft so as to rotate at one-half the rate of rotation of the rotor shaft, wherein the cam surface rotation is regulated by the rotation of the shaft by means which drive a ring bearing the cam surfaces.
Claim 10
Dependent Claim
36 words
The rotary engine of claim 7 wherein the cam surface rotation is regulated by a driving gear mounted on the shaft and multiple driven gears rotatably mounted to drive a ring gear bearing the cam surfaces.
Claim 11
Dependent Claim
19 words
The rotary engine of claim 7 wherein the driven gears are journaled by opposing outside portions of the housings.
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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |