US3259114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary piston internal combustion engine construction
Assignee: Daimler Benz AG
•
Filing: 1962-11-16
•
Granted: 1966-07-05
•
Expires: 1982-11-16
Abstract
No abstract record available.
Inventors
- 👤 Gassmann Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:23
CPC Classifications
F; F02; F02B; F02B55/00; F02B55/08; 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
119 words
IN A HOUSING STRUCTURE FOR ROTARY PISTON INTENAL COMBUSTION ENGINES, ESPECIALLY FOR THOSE HAVING WORKING CHAMBERS OF TROCHOIDAL SHAPE IN CROSS SECTION, IN WHICH ROTATE PISTONS OF POLYGONAL SHAPE HAVING SUBSTANTIALLY ACURATELY FORMED WORKING SURFACES, AND OF WHICH THE WORKING CHAMBERS ARE EFFECTIVELY SUBDIVIDED INTO A RELATIVELY WARMER SECTION GENERALLY COMPRISING THE COMBUSTION AND EXHAUST SECTIONS, AND INTO A RELATIVELY COOLER SECTION GENERALLY COMPRISING THE INTAKE AND COMPRESSION SECTIONS, THE IMPROVEMENT ESSENTIALLY CONSISTING OF INNER WALL MEANS, GENERALLY DISPOSED ABOUT ON AXIS, DEFINING AT LEAST IN PART SAID WORKING CHAMBER, THE LENGTH, GENERALLY MEASURED ALONG SAID AXIS, OF SAID INNER WALL MEANS BEING SLIGHTLY SMALLER WITHIN SAID RELATIVELY WARMER SECTION THAN THE LENGTH THEREOF WITHIN THE RELATIVELY COOLER SECTION.
Claim 2
Dependent Claim
119 words
IN A HOUSING STRUCTURE FOR ROTARY PISTON INTENAL COMBUSTION ENGINES, ESPECIALLY FOR THOSE HAVING WORKING CHAMBERS OF TROCHOIDAL SHAPE IN CROSS SECTION, IN WHICH ROTATE PISTONS OF POLYGONAL SHAPE HAVING SUBSTANTIALLY ACURATELY FORMED WORKING SURFACES, AND OF WHICH THE WORKING CHAMBERS ARE EFFECTIVELY SUBDIVIDED INTO A RELATIVELY WARMER SECTION GENERALLY COMPRISING THE COMBUSTION AND EXHAUST SECTIONS, AND INTO A RELATIVELY COOLER SECTION GENERALLY COMPRISING THE INTAKE AND COMPRESSION SECTIONS, THE IMPROVEMENT ESSENTIALLY CONSISTING OF INNER WALL MEANS, GENERALLY DISPOSED ABOUT ON AXIS, DEFINING AT LEAST IN PART SAID WORKING CHAMBER, THE LENGTH, GENERALLY MEASURED ALONG SAID AXIS, OF SAID INNER WALL MEANS BEING SLIGHTLY SMALLER WITHIN SAID RELATIVELY WARMER SECTION THAN THE LENGTH THEREOF WITHIN THE RELATIVELY COOLER SECTION.
References Cited (Backward Citations)
US1504926A
Cited
US3042009A
Cited
US3091386A
Cited
US3102516A
Cited
US3116722A
Cited
US3175467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |