US3239135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Housing for rotary-piston internal combustion engine
Assignee: Daimler Benz AG
•
Filing: 1963-03-11
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Granted: 1966-03-08
•
Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Fritz Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:30
CPC Classifications
F; F02; F02B; F02B55/00; F02B55/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A HOUSING FOR A ROTARY-PISTON INTERNAL-COMBUSTION ENGINE OF TROCHOIDAL CONSTRUCTION, COMPRISING: ENCLOSURE BODY MEANS PROVIDED WITH A SUBSTANTIALLY ELLIPTICAL INNER CONTOUR, AND BUSHING MEANS PROVIDED WITH A SUBSTANTIALLY ELLIPTICAL OUTER CONTOUR AND PRESSED INTO THE SUBSTANTIALLY ELLIPTICAL INNER CONTOUR OF SAID ENCLOSURE BODY MEANS SO AS TO PROVIDE A FORCEFUL CONTACT BETWEEN SAID BUSHING MEANS AND SAID ENCLOSURE BODY MEANS SUFFICIENT TO PREVENT RELATIVE MOVEMENT THEREBETWEEN UNDER ALL CONDITIONS OF OPERATION, SAID BUSHING MEANS BEING PROVIDED WITH A TWO-ARCHED INTERNAL SURFACE CONSTITUTING THE CAM TRACK FOR THE PISTON, AND SAID CONTOURS BEING SUCH THAT THE SUPPORT FORCES OF SAID BUSHING MEANS ALL ACT OUTWARDLY.
Claim 2
Dependent Claim
104 words
A HOUSING FOR A ROTARY-PISTON INTERNAL-COMBUSTION ENGINE OF TROCHOIDAL CONSTRUCTION, COMPRISING: ENCLOSURE BODY MEANS PROVIDED WITH A SUBSTANTIALLY ELLIPTICAL INNER CONTOUR, AND BUSHING MEANS PROVIDED WITH A SUBSTANTIALLY ELLIPTICAL OUTER CONTOUR AND PRESSED INTO THE SUBSTANTIALLY ELLIPTICAL INNER CONTOUR OF SAID ENCLOSURE BODY MEANS SO AS TO PROVIDE A FORCEFUL CONTACT BETWEEN SAID BUSHING MEANS AND SAID ENCLOSURE BODY MEANS SUFFICIENT TO PREVENT RELATIVE MOVEMENT THEREBETWEEN UNDER ALL CONDITIONS OF OPERATION, SAID BUSHING MEANS BEING PROVIDED WITH A TWO-ARCHED INTERNAL SURFACE CONSTITUTING THE CAM TRACK FOR THE PISTON, AND SAID CONTOURS BEING SUCH THAT THE SUPPORT FORCES OF SAID BUSHING MEANS ALL ACT OUTWARDLY.
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |