US3841279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine with radially reciprocal rotor mounted pistons
Assignee: Individual
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Filing: 1972-07-20
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Granted: 1974-10-15
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Expires: 1992-07-20
Abstract
Abstract A rotor cavity is defined by a housing and the cavity includes a generally cylindrical chamber interrupted by a pair of ramp surfaces lying generally along chords of the cavity disposed normal to radii of the cavity displaced approximately 90* apart. A rotor is journaled in the cavity and includes a plurality of equally circumferentially spaced generally radial piston receiving cylinder bores and a piston is reciprocally mounted in each cylinder bore and includes an outer end roller rollingly engaged with the wall surfaces of the cavity including the aforementioned ramp surfaces. Opposite sides of the rotor are provided with inlet and outlet ports opening into the inner ends of the cylinders or piston bores and the cavity is closed by opposite end walls between which the rotor is received and the end walls are provided with inlet and outlet openings with which the intake and exhaust ports formed in the rotor are sequentially registrable.
Inventors
- 👤 C Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:48
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/26; F02B75/265; F01; F01B; F01B9/00; F01B9/04; F01B9/06; F02B57/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
351 words
An engine including a casing having a generally cylindrical cavity formed therein and opposite end wall means closing the opposite ends of said cavity, a rotor journaled in said cavity, said cavity including wall portions defining a pair of ramp surfaces extending generally along circumferentially spaced chords of said cavity with the adjacent ends of said ramp surfaces spaced about the circumference of said cavity and the mid-portions of said ramp surfaces spaced at least slightly radially outwardly of said rotor, at least one cylinder bore formed in said rotor generally paralleling a radius of said rotor and closed at its inner end, a piston reciprocal in said bore and including an outer roller rollingly engaged with the inner surfaces, including said ramp surfaces, of said cavity, at least one end of said rotor including at least one port means formed therethrough opening into the inner end portion of said cylinder bore, said end wall means including intake and exhaust ports formed therethrough with which said rotor port means is registrable, said exhaust port being disposed for registry with said port means when said roller is engaged with the approach end portion of one of said ramp surfaces and said intake port being disposed for registry with said port means when said roller is engaged with the departure end of said one ramp surface, said cylinder bore being spaced laterally of said radius in the direction of intended rotation of said rotor, said rotor including a guide bore closely adjacent and paralleling said cylinder bore, a tongue rigid with and projecting outwardly from the outer end of said piston to a position over the outer end of said guide bore, an elongated guide member carried by the free end of said tongue and loosely telescoped into the central portion of said guide bore, a compression spring seated in the inner end of said guide bore, disposed about said guide member and having its outer end engaged against said tongue, said guide bore being disposed to the rear of said cylinder bore relative to the direction of intended rotation of said rotor.
Claim 2
Dependent Claim
351 words
An engine including a casing having a generally cylindrical cavity formed therein and opposite end wall means closing the opposite ends of said cavity, a rotor journaled in said cavity, said cavity including wall portions defining a pair of ramp surfaces extending generally along circumferentially spaced chords of said cavity with the adjacent ends of said ramp surfaces spaced about the circumference of said cavity and the mid-portions of said ramp surfaces spaced at least slightly radially outwardly of said rotor, at least one cylinder bore formed in said rotor generally paralleling a radius of said rotor and closed at its inner end, a piston reciprocal in said bore and including an outer roller rollingly engaged with the inner surfaces, including said ramp surfaces, of said cavity, at least one end of said rotor including at least one port means formed therethrough opening into the inner end portion of said cylinder bore, said end wall means including intake and exhaust ports formed therethrough with which said rotor port means is registrable, said exhaust port being disposed for registry with said port means when said roller is engaged with the approach end portion of one of said ramp surfaces and said intake port being disposed for registry with said port means when said roller is engaged with the departure end of said one ramp surface, said cylinder bore being spaced laterally of said radius in the direction of intended rotation of said rotor, said rotor including a guide bore closely adjacent and paralleling said cylinder bore, a tongue rigid with and projecting outwardly from the outer end of said piston to a position over the outer end of said guide bore, an elongated guide member carried by the free end of said tongue and loosely telescoped into the central portion of said guide bore, a compression spring seated in the inner end of said guide bore, disposed about said guide member and having its outer end engaged against said tongue, said guide bore being disposed to the rear of said cylinder bore relative to the direction of intended rotation of said rotor.
Claim 3
Dependent Claim
54 words
The combination of claim 1 wherein said ramp surfaces are generally straight and extend along chords of said chamber disposed at right angles to radii of the axis of rotation of said rotor displaced substantially 90* apart, said pair of ramp surfaces being disposed entirely on one side of a diameter of said rotor.
Claim 4
Dependent Claim
42 words
The combination of claim 1 wherein said rotor includes at least one additional cylinder bore spaced circumferentially about said rotor from the first-mentioned bore and an attendant roller supported piston as well as further port means corresponding to the first-mentioned port means.
Claim 5
Dependent Claim
18 words
The combination of claim 1 including seal means recessed in said rotor and extending about said port means.
Claim 6
Dependent Claim
40 words
The combination of claim 1 wherein said end wall means also includes an additional exhaust port means formed therethrough with which said port means is registered when said roller is engaged with the departure end of the other ramp surface.
Claim 7
Dependent Claim
27 words
The combinatIon of claim 1 wherein said port means opens into the inner end portion of said cylinder bore at least closely adjacent the inner end thereof.
Claim 8
Dependent Claim
13 words
The combination of claim 1 wherein said ramp surfaces include slightly convex mid-portions.
Claim 9
Dependent Claim
46 words
The combination of claim 1 including seal means recessed in said rotor and extending about said port means, the inner surfaces of said end wall means including shallow oil grooves with which said seal means are registrable, and means for supplying lubricating oil to said grooves.
Claim 10
Dependent Claim
308 words
An engine including a casing having a generally cylindrical cavity formed therein and including opposite end wall means closing the opposite ends of said cavity, a rotor journaled in said cavity, at least one cylinder bore formed in said rotor generally paralleling a radius of said rotor and closed at its inner end, a piston reciprocal in said bore and including outer end roller means, said casing including means defining at least one pair of circumferentially spaced ramp surfaces each including approach and departure ends, said roller means being rollingly engaged with said ramp surfaces to urge said piston inwardy of said cylinder bore twice during each rotation of said rotor, said rotor and casing including alternately registrable intake and exhaust passage means for opening the inner end of said cylinder bore to a supply of combustible air and fuel mixture as said roller is moving down the departure end of one of said ramp surfaces and venting the inner end of said cylinder bore as said roller is moving upwardly along the approach end of one of said ramp surfaces, said cylinder bore being spaced laterally of said radius in the direction of intended rotation of said rotor, said rotor including a guide bore closely adjacent and paralleling said cylinder bore, a tongue rigid with and projecting outwardly from the outer end of said piston to a position over the outer end of said guide bore, an elongated guide member carried by the free end of said tongue and loosely telescoped into the central portion of said guide bore, a compression spring seated in the inner end of said guide bore, disposed about said guide member and having its outer end engaged against said tongue, said guide bore being disposed to the rear of said cylinder bore relative to the direction of intended rotation of said rotor.
Claim 11
Dependent Claim
308 words
An engine including a casing having a generally cylindrical cavity formed therein and including opposite end wall means closing the opposite ends of said cavity, a rotor journaled in said cavity, at least one cylinder bore formed in said rotor generally paralleling a radius of said rotor and closed at its inner end, a piston reciprocal in said bore and including outer end roller means, said casing including means defining at least one pair of circumferentially spaced ramp surfaces each including approach and departure ends, said roller means being rollingly engaged with said ramp surfaces to urge said piston inwardy of said cylinder bore twice during each rotation of said rotor, said rotor and casing including alternately registrable intake and exhaust passage means for opening the inner end of said cylinder bore to a supply of combustible air and fuel mixture as said roller is moving down the departure end of one of said ramp surfaces and venting the inner end of said cylinder bore as said roller is moving upwardly along the approach end of one of said ramp surfaces, said cylinder bore being spaced laterally of said radius in the direction of intended rotation of said rotor, said rotor including a guide bore closely adjacent and paralleling said cylinder bore, a tongue rigid with and projecting outwardly from the outer end of said piston to a position over the outer end of said guide bore, an elongated guide member carried by the free end of said tongue and loosely telescoped into the central portion of said guide bore, a compression spring seated in the inner end of said guide bore, disposed about said guide member and having its outer end engaged against said tongue, said guide bore being disposed to the rear of said cylinder bore relative to the direction of intended rotation of said rotor.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |