Patent US3206108A successfully refreshed from Google Patents.
US3206108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary piston internal combustion engine
Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1963-04-01
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Granted: 1965-09-14
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Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 Abermeth Hubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:44
CPC Classifications
F; F01; F01C; F01C19/00; F01C19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A ROTARY PISTON INTERNAL COMBUSTION ENGINE HAVING A ROTARY PISTON AND AN ENVELOPING BODY, SAID PISTON HAVING ITS CIRCUMFERENCE PROVIDED WITH AXIAL EXTENDING ZENITH EDGES PROVIDED WITH AXIAL GROOVES, SEALING STRIPS IN SAID GROOVES ADAPTED TO SEAL THE WORKING CHAMBERS OF THE ENGINE FORMED BY THE PISTON AND BODY WITH REGARD TO EACH OTHER, THE PISTON BEING PROVIDED WITH PASSAGES AND CAVITIES ADAPTED TO CONVEY A LIQUID COOLING MEDIUM WHICH ALSO SERVES AS LUBRICANT, SAID PASSAGES INCLUDIN G RADIAL PASSAGES IN THE PISTON SUBSTANTIALLY IN THE AXIALLY LOCATED CENTRAL TRANSVERSE PLANE OF THE PISTON, AXIAL PASSAGES IN THE PISTON EXTENDING ON BOTY SIDES OF AND SUBSTANTIALLY PARALLEL TO AND ADJACENT EACH SAID GROOVE AND CLOSED AT THE OPPOSITE ENDS OF THE PISTON, SAID RADIAL PAS-
Claim 2
Dependent Claim
125 words
A ROTARY PISTON INTERNAL COMBUSTION ENGINE HAVING A ROTARY PISTON AND AN ENVELOPING BODY, SAID PISTON HAVING ITS CIRCUMFERENCE PROVIDED WITH AXIAL EXTENDING ZENITH EDGES PROVIDED WITH AXIAL GROOVES, SEALING STRIPS IN SAID GROOVES ADAPTED TO SEAL THE WORKING CHAMBERS OF THE ENGINE FORMED BY THE PISTON AND BODY WITH REGARD TO EACH OTHER, THE PISTON BEING PROVIDED WITH PASSAGES AND CAVITIES ADAPTED TO CONVEY A LIQUID COOLING MEDIUM WHICH ALSO SERVES AS LUBRICANT, SAID PASSAGES INCLUDIN G RADIAL PASSAGES IN THE PISTON SUBSTANTIALLY IN THE AXIALLY LOCATED CENTRAL TRANSVERSE PLANE OF THE PISTON, AXIAL PASSAGES IN THE PISTON EXTENDING ON BOTY SIDES OF AND SUBSTANTIALLY PARALLEL TO AND ADJACENT EACH SAID GROOVE AND CLOSED AT THE OPPOSITE ENDS OF THE PISTON, SAID RADIAL PAS-
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |