Patent US832245A successfully refreshed from Google Patents.
Patent US3202430A successfully refreshed from Google Patents.
US3202430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston ring assembly
Assignee: Clevite Industries Inc
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Filing: 1962-06-25
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Granted: 1965-08-24
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Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Braendel Helmuth Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:29
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/06; F16J9/061; F16J9/063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A PISTON RING ASSEMBLY COMPRISING AN ANNULAR UPPER RAIL, AN ANNULAR LOWER RAIL, SAID RAILS HAVING SURFACES FOR ESTABLISHING INTIMATE CONTACT WITH THE SIDES OF A PISTON GROOVE, EACH RAIL HAVING A RADIALLY OUTWARDLY EXTENDING PROJECTION TERMINATING IN A WALL ENGAGING END FACE OF SUBSTANTIAL WIDTH PARALLEL TO THE LONGITUDINAL AXIS OF SAID RAILS, AN UNDULATED EQUALIZER JUXTAPOSED TO AND RADIALLY INWARDLY OF SAID RAILS, AN ANGLED SURFACE ON THE INNER PERIPHERY OF SAID RAILS, SUBSTANTIALLY THE ENTIRE ANGLED SURFACES ON THE UNDULATIONS OF SAID EQUALIZER MATING ONLY WITH THE ANGLED SURFACE OF SAID RAILS, SAID EQUALIZER BIASING SAID RAILS RADIALLY OUTWARDLY AND BEING THE SOLE MEANS FOR ESTABLISHING INTIMATE RAIL CONTACT WITH THE SIDES OF A PISTON GROOVE, SAID WALL-ENGAGING END FACE AND SAID ANGLED SURFACE OF EACH RAIL BEING SUBSTANTIALLY BISECTED IN CROSS SECTION BY AN IMAGINARY RADIALLY DIRECTED LINE.
Claim 2
Dependent Claim
142 words
A PISTON RING ASSEMBLY COMPRISING AN ANNULAR UPPER RAIL, AN ANNULAR LOWER RAIL, SAID RAILS HAVING SURFACES FOR ESTABLISHING INTIMATE CONTACT WITH THE SIDES OF A PISTON GROOVE, EACH RAIL HAVING A RADIALLY OUTWARDLY EXTENDING PROJECTION TERMINATING IN A WALL ENGAGING END FACE OF SUBSTANTIAL WIDTH PARALLEL TO THE LONGITUDINAL AXIS OF SAID RAILS, AN UNDULATED EQUALIZER JUXTAPOSED TO AND RADIALLY INWARDLY OF SAID RAILS, AN ANGLED SURFACE ON THE INNER PERIPHERY OF SAID RAILS, SUBSTANTIALLY THE ENTIRE ANGLED SURFACES ON THE UNDULATIONS OF SAID EQUALIZER MATING ONLY WITH THE ANGLED SURFACE OF SAID RAILS, SAID EQUALIZER BIASING SAID RAILS RADIALLY OUTWARDLY AND BEING THE SOLE MEANS FOR ESTABLISHING INTIMATE RAIL CONTACT WITH THE SIDES OF A PISTON GROOVE, SAID WALL-ENGAGING END FACE AND SAID ANGLED SURFACE OF EACH RAIL BEING SUBSTANTIALLY BISECTED IN CROSS SECTION BY AN IMAGINARY RADIALLY DIRECTED LINE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |