US3724427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary internal combustion engine
Assignee: Individual
•
Filing: 1971-06-15
•
Granted: 1973-04-03
•
Expires: 1991-06-15
Abstract
Abstract A rotary internal combustion engine including a plurality of segregated chambers arranged in communicating relation with one another such that compression, combustion and expansion of the gases used to rotate the engine may take place in succession, step-like manner. Each of the chambers have mounted therein a rotary pump which may be in the form of a pair of multi-lobed intermeshing rotors mounted on two parallel drive shafts. Alternately, the rotary pumps may be in the form of a single rotor mounted on a single drive shaft which extends through each of the successively arranged chambers so as to position the rotor in movable working relation with the interior of the cylinder.
Inventors
- 👤 K Sauder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:50
CPC Classifications
F; F01; F01C; F01C11/00; F01C11/002; F01C11/004; F01C1/00; F01C1/08; F01C1/12; F01C1/14; F01C1/18; F02; F02B; F02B53/00; F02B2053/005; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
171 words
A rotary internal combustion engine of the type having compression, combustion and expansion stages, said engine comprising: said compression stage including a plurality of cylinders arranged in successive, step-like arrangement to one another, said combustion stage comprising at least one cylinder arranged and successively related to said compression stage, said expansion stage including a plurality of cylinders arranged in successive, step-like relation to the cylinders of said compression and combustion stages; each of said cylinders of each of said stages arranged in sEgregated relation to one another, whereby treatment of gases in each cylinder is independent of gas treatment in the remaining cylinders, said combustion cylinder arranged in segregated, communicating relation with cylinders of the compression and expansion stages such that combustion occurs at maximum compression after transfer of gases from said compression stage and prior to gases entering the expansion stage; rotary pump means movably arranged within each of the cylinders of each stage and each rotary pump means affixedly mounted on shaft means corporating with each of said cylinders.
Claim 2
Dependent Claim
171 words
A rotary internal combustion engine of the type having compression, combustion and expansion stages, said engine comprising: said compression stage including a plurality of cylinders arranged in successive, step-like arrangement to one another, said combustion stage comprising at least one cylinder arranged and successively related to said compression stage, said expansion stage including a plurality of cylinders arranged in successive, step-like relation to the cylinders of said compression and combustion stages; each of said cylinders of each of said stages arranged in sEgregated relation to one another, whereby treatment of gases in each cylinder is independent of gas treatment in the remaining cylinders, said combustion cylinder arranged in segregated, communicating relation with cylinders of the compression and expansion stages such that combustion occurs at maximum compression after transfer of gases from said compression stage and prior to gases entering the expansion stage; rotary pump means movably arranged within each of the cylinders of each stage and each rotary pump means affixedly mounted on shaft means corporating with each of said cylinders.
Claim 3
Dependent Claim
48 words
A rotary internal combustion engine as in claim 1 wherein each of said cylinders comprising each of said stages are arranged in successive, end-line relation, communication means interconnected between adjacently located cylinders such that gases pass from one cylinder to another upon treatment in each of said cylinders.
Claim 4
Dependent Claim
43 words
A rotary internal combustion engine as in claim 2 each cylinder comprising an intake and an exhaust vent positioned in spaced relation to one another a distance of at least one fourth revolution of the respective cylinders on which the vents are mounted.
Claim 5
Dependent Claim
47 words
A rotary internal combustion engine as in claim 1 wherein said shaft means comprises a single shaft extending through each of said cylinders of each of said stages, each rotary pump means of each cylinder fixedly attached to said shaft in working relation to their respective cylinders.
Claim 6
Dependent Claim
146 words
A rotary internal combustion engine as in claim 1 wherein said shaft means includes a pair of shafts rotatably mounted in each of said cylinders, said rotary pump means comprising a plurality of rotor pairs, each cylinder having a rotor pair mounted therein on said pair of shafts respectively, each of said rotors comprising said rotor pair being multi-lobed and adapted to approximately intermesh with one another, communication means interconnected between said successively arranged cylinders whereby gases are transported between said successive cylinders, an intake vent provided in said wall of each of said cylinders whereby said gases are introduced into said cylinders, an exhaust vent connected to each of said cylinders whereby treated gases are exhausted from each of said cylinders, ignition means provided on said combustion stage whereby said gases are ignited, gear means provided whereby the rotation of said two shafts are synchronized.
Claim 7
Dependent Claim
28 words
The rotary internal combustion engine as in claim 5 wherein said multi-lobed rotors are four rounded cusps and further wherein between said cusps of said rotor is concave.
Claim 8
Dependent Claim
31 words
A rotary internal combustion engine as in claim 5 wherein said rotor has at least two rounded cusps and further wherein a concavity exists in said rotor between said rounded cusps.
Claim 9
Dependent Claim
65 words
A rotary internal combustion engine as in claim 5 wherein said cylinders each comprise at least two sidewise abutting and communicating cylinder pairs in which said shafts are rotatably mounted in spaced, fixed and parallel relationship and further wherein the displacement volume defined by the space between said cylinder pairs and said rotors are substantially smaller in at least one of said sidewise abutting cylinders.
Claim 10
Dependent Claim
60 words
A rotary internal combustion engine as in claim 1 wherein said compression stage comprises at least three cylinders, said ignition stage comprises one cylinder and said expansion stage comprises three cylinders; all of said cylinders of said stages being arranged in successive, segregated relation to one another such that gas passing through said engine is treated in a step-like fashion.
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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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |