US3391677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary piston engine
Assignee: Beteiligungs und Patentverwaltungs GmbH
•
Filing: 1962-11-29
•
Granted: 1968-07-09
•
Expires: 1982-11-29
Abstract
No abstract record available.
Inventors
- 👤 Erwin Hejj
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:42
CPC Classifications
F; F02; F02B; F02B55/00; F02B55/14; F02B53/00; F02B53/10; F02B2053/005; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A ROTARY PISTON ENGINE WHICH COMPRISES: A HOUSING HAVING AN INNER EPITROCHOIDAL SURFACE DISPOSED ABOUT A FIRST AXIS, A ROTOR ARRANGED ABOUT A SECOND AXIS AND SUPPORTED FOR RELATIVE TURNING MOVEMENT WITHIN SAID HOUSING SUCH THAT SAID ROTOR TURNS ABOUT SAID SECOND AXIS AS SAID SECOND AXIS ROTATES ABOUT SAID FIRST AXIS, SAID ROTOR HAVING AN OUTER SURFACE FOR COOPERATION WITH SAID EPITROCHOIDAL SURFACE SO AS TO CONFINE THEREWITH CHAMBERS ALTERNATELY INCREASING AND DECREASING WITH THE ROTATION OF SAID ROTOR IN ONE AND THE SAME DIRECTION, SAID HOUSING HAVING AT LEAST ONE ANTECHAMBER SPACED FROM THE INTERIOR OF SAID HOUSING, AND A PLURALITY OF CONDUIT MEANS ARRANGED ONE BEHIND THE OTHER WHEN LOOKING IN THE DIRECTION OF ROTATION OF SAID ROTOR, SAID CONDUIT MEANS ESTABLISHING COMMUNICATION BETWEEN SAID ANTECHAMBER AND AT LEAST ONE OF SAID ALTERNATELY INCREASING AND DECREASING CHAMBERS.
Claim 2
Dependent Claim
140 words
A ROTARY PISTON ENGINE WHICH COMPRISES: A HOUSING HAVING AN INNER EPITROCHOIDAL SURFACE DISPOSED ABOUT A FIRST AXIS, A ROTOR ARRANGED ABOUT A SECOND AXIS AND SUPPORTED FOR RELATIVE TURNING MOVEMENT WITHIN SAID HOUSING SUCH THAT SAID ROTOR TURNS ABOUT SAID SECOND AXIS AS SAID SECOND AXIS ROTATES ABOUT SAID FIRST AXIS, SAID ROTOR HAVING AN OUTER SURFACE FOR COOPERATION WITH SAID EPITROCHOIDAL SURFACE SO AS TO CONFINE THEREWITH CHAMBERS ALTERNATELY INCREASING AND DECREASING WITH THE ROTATION OF SAID ROTOR IN ONE AND THE SAME DIRECTION, SAID HOUSING HAVING AT LEAST ONE ANTECHAMBER SPACED FROM THE INTERIOR OF SAID HOUSING, AND A PLURALITY OF CONDUIT MEANS ARRANGED ONE BEHIND THE OTHER WHEN LOOKING IN THE DIRECTION OF ROTATION OF SAID ROTOR, SAID CONDUIT MEANS ESTABLISHING COMMUNICATION BETWEEN SAID ANTECHAMBER AND AT LEAST ONE OF SAID ALTERNATELY INCREASING AND DECREASING CHAMBERS.
References Cited (Backward Citations)
US3053238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |