US3314402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cooling a piston
Assignee: Veb Dieselmotorenwerk Rostock LLC
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Filing: 1965-06-03
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Granted: 1967-04-18
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Expires: 1985-06-03
Abstract
No abstract record available.
Inventors
- 👤 Tillack Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:37
CPC Classifications
F; F02; F02F; F02F3/00; F02F3/16; F02F3/20; F02F3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
FOR USE IN AN INTERNAL COMBUSTION ENGINE, A HOLLOW PISTON HAVING AN ELONGATED HOLLOW INTERIOR EXTENDING LONGITUDINALLY ALONG SAID PISTON AND TERMINATING AT ONE END IN AN INNER TRANSVERSE SURFACE FROM WHICH A SUBSTANTIALLY CYLINDRICAL INNER SURFACE OF SAID PISTON EXTENDS, SUPPORT MEANS CARRIED BY SAID HOLLOW PISTON IN THE INTERIOR THEREOF, ROTARY MEANS MOUNTED ON SAID SUPPORT MEANS FOR FREE ROTATION WITH RESPECT TO SAID PISTON, SAID ROTARY MEANS BEING SITUATED BETWEEN SAID SUPPORT MEANS AND SAID INNER TRANSVERSE SURFACE OF SAID PISTON SO THAT SAID ROTARY MEANS IS SURROUNDED BY SAID INNER CYLINDRICAL SURFACE OF SAID PISTON, SAID ROTARY MEANS HAVING A TRANSVERSE SURFACE DIRECTED TOWARD SAID TRANSVERSE INNER SURFACE OF SAID PISTON, FLUID GUIDE MEANS CARRIED BY SAID TRANSVERSE SURFACE OF SAID ROTARY MEANS AND
Claim 2
Dependent Claim
128 words
FOR USE IN AN INTERNAL COMBUSTION ENGINE, A HOLLOW PISTON HAVING AN ELONGATED HOLLOW INTERIOR EXTENDING LONGITUDINALLY ALONG SAID PISTON AND TERMINATING AT ONE END IN AN INNER TRANSVERSE SURFACE FROM WHICH A SUBSTANTIALLY CYLINDRICAL INNER SURFACE OF SAID PISTON EXTENDS, SUPPORT MEANS CARRIED BY SAID HOLLOW PISTON IN THE INTERIOR THEREOF, ROTARY MEANS MOUNTED ON SAID SUPPORT MEANS FOR FREE ROTATION WITH RESPECT TO SAID PISTON, SAID ROTARY MEANS BEING SITUATED BETWEEN SAID SUPPORT MEANS AND SAID INNER TRANSVERSE SURFACE OF SAID PISTON SO THAT SAID ROTARY MEANS IS SURROUNDED BY SAID INNER CYLINDRICAL SURFACE OF SAID PISTON, SAID ROTARY MEANS HAVING A TRANSVERSE SURFACE DIRECTED TOWARD SAID TRANSVERSE INNER SURFACE OF SAID PISTON, FLUID GUIDE MEANS CARRIED BY SAID TRANSVERSE SURFACE OF SAID ROTARY MEANS AND
References Cited (Backward Citations)
US1157347A
Cited
US1639062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |