Patent US3196848A successfully refreshed from Google Patents.
US3196848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary piston engine
Assignee: Daimler Benz AG
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Filing: 1962-01-24
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Granted: 1965-07-27
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Expires: 1982-01-24
Abstract
No abstract record available.
Inventors
- 👤 Bensinger Wolf-Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:25
CPC Classifications
F; F01; F01C; F01C19/00; F01C19/10; F01C19/02; F01C19/04; F02; F02B; F02B53/00; F02B2053/005; F02B2730/00; F02B2730/01; F02B2730/018; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
IN A ROTARY PISTON INTERNAL COMBUSTION ENGINE OF THE TYPE INCLUDING AN ENGINE HOUSING HAVING A LONGITUDINAL AXIS AND IN WHICH THERE IS ARRANGED WITHIN THE HOUSING A PISTON PROVIDED WITH SEALING MEMBERS ARRANGED AT THE PISTON PARALLELLY TO THE PISTON AXIS, SAID LONGITUDINAL AXIS AND SAID PISTON AXIS EXTENDING SUBSTANTIALLY PARALLEL TO ONE ANOTHER, SAID PISTON SLIDING WITH THE SEALING MEMBERS THEREOF ALONG THE INTERNAL BOUNDARY OF THE HOUSING, THE INTERNAL BOUNDARY OF SAID HOUSING BEING DISPOSED AT A SUBSTANTIALLY EQUIDISTANT DISTANCE WITH RESPECT TO THE CONTOUR OF THE OUTER ENVELOPE OF ALL POSITIONS OF SAID PISTON TO THE HOUSING, AND IN WHICH THE INTERNAL BOUNDARY OF THE HOUSING IS PROVIDED WITH AT LEAST ONE ZONE APPROACHING SAID LONGITUDINAL AXIS, THE IMPROVEMENT ESSENTIALLY CONSISTING OF REDUCING THE DISTANCE BETWEEN SAID INTERNAL BOUNDARY AND THE CONTOUR REPRESENTING THE OUTER ENVELOPE OF ALL POSITIONS OF THE PISTON DURING ROTATION THEREOF WITHIN AN AREA OF THE INTERNAL BOUNDARY OF THE HOUSING FOLLOWING THE SAID ZONE IN PROXIMITY TO THE AXIS, AS VIEWED IN THE DIRECTION OF ROTATION OF THE PISTON.
Claim 2
Dependent Claim
178 words
IN A ROTARY PISTON INTERNAL COMBUSTION ENGINE OF THE TYPE INCLUDING AN ENGINE HOUSING HAVING A LONGITUDINAL AXIS AND IN WHICH THERE IS ARRANGED WITHIN THE HOUSING A PISTON PROVIDED WITH SEALING MEMBERS ARRANGED AT THE PISTON PARALLELLY TO THE PISTON AXIS, SAID LONGITUDINAL AXIS AND SAID PISTON AXIS EXTENDING SUBSTANTIALLY PARALLEL TO ONE ANOTHER, SAID PISTON SLIDING WITH THE SEALING MEMBERS THEREOF ALONG THE INTERNAL BOUNDARY OF THE HOUSING, THE INTERNAL BOUNDARY OF SAID HOUSING BEING DISPOSED AT A SUBSTANTIALLY EQUIDISTANT DISTANCE WITH RESPECT TO THE CONTOUR OF THE OUTER ENVELOPE OF ALL POSITIONS OF SAID PISTON TO THE HOUSING, AND IN WHICH THE INTERNAL BOUNDARY OF THE HOUSING IS PROVIDED WITH AT LEAST ONE ZONE APPROACHING SAID LONGITUDINAL AXIS, THE IMPROVEMENT ESSENTIALLY CONSISTING OF REDUCING THE DISTANCE BETWEEN SAID INTERNAL BOUNDARY AND THE CONTOUR REPRESENTING THE OUTER ENVELOPE OF ALL POSITIONS OF THE PISTON DURING ROTATION THEREOF WITHIN AN AREA OF THE INTERNAL BOUNDARY OF THE HOUSING FOLLOWING THE SAID ZONE IN PROXIMITY TO THE AXIS, AS VIEWED IN THE DIRECTION OF ROTATION OF THE PISTON.
References Cited (Backward Citations)
US2880045A
Cited
US3102492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |