Patent US3342476A successfully refreshed from Google Patents.
US3342476A
Expired / Lapsed
US
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Stressing element for piston rings
Assignee: Goetzewerke Friedrich Goetze AG
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Filing: 1965-05-21
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Granted: 1967-09-19
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Expires: 1985-05-21
Abstract
No abstract record available.
Inventors
- 👤 Vossieck Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:39
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/06; F16J9/064; F16J9/066; F16J9/067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN A BAND-LIKE TANGENTIALLY AND RADIALLY RESILIENT SPRING MEMBER OF THE TYPE USED FOR SUPPORTING A PAIR OF WASHER-LIKE OIL STRIPING RINGS IN RESPECTIVELY OPPOSITE AXIAL ENDS OF A GROOVE PROVIDED THEREFOR IN A PISTON, SAID SPRING MEMBER HAVING RADIALLY INNER AND RADIALLY OUTER REVERSE BENDS THEREIN AND WEB PORTIONS EXTENDING BETWEEN SAID BENDS SO AS TO FORM AN ANNULAR UNDULATING MEMBER, NOTCHES IN THE TOPS AND BOTTOMS OF SAID WEB PORTIONS, THE AXIAL LENGTH OF THE SPRING MEMBER AT THE RADIALLY OUTER REVERSE BENDS BEING SUBSTANTIALY EQUAL TO THE AXIAL SPACING BETWEEN THE ADJACENT FACES OF SAID RINGS, THE AXIAL LENGTH OF THE SPRING MEMBER IN THE REGION OF THE RADIALLY INNER REVERSE BENDS BEING GREATER THAN THE AXIAL SPACING BETWEEN THE INNER FACES OF SAID RINGS, AND RING ENGAGING LUG MEANS ON SAID SPRING MEMBER ENGAGING THE INSIDE INNER EDGES OF SAID RINGS, SAID LUG MEANS COMPRISING BENT BACK REGIONS OF SAID WEB PORTIONS AT THE RADIALLY INNER ENDS OF SAID NOTCHES IN SAID WEB PORTIONS.
Claim 2
Dependent Claim
168 words
IN A BAND-LIKE TANGENTIALLY AND RADIALLY RESILIENT SPRING MEMBER OF THE TYPE USED FOR SUPPORTING A PAIR OF WASHER-LIKE OIL STRIPING RINGS IN RESPECTIVELY OPPOSITE AXIAL ENDS OF A GROOVE PROVIDED THEREFOR IN A PISTON, SAID SPRING MEMBER HAVING RADIALLY INNER AND RADIALLY OUTER REVERSE BENDS THEREIN AND WEB PORTIONS EXTENDING BETWEEN SAID BENDS SO AS TO FORM AN ANNULAR UNDULATING MEMBER, NOTCHES IN THE TOPS AND BOTTOMS OF SAID WEB PORTIONS, THE AXIAL LENGTH OF THE SPRING MEMBER AT THE RADIALLY OUTER REVERSE BENDS BEING SUBSTANTIALY EQUAL TO THE AXIAL SPACING BETWEEN THE ADJACENT FACES OF SAID RINGS, THE AXIAL LENGTH OF THE SPRING MEMBER IN THE REGION OF THE RADIALLY INNER REVERSE BENDS BEING GREATER THAN THE AXIAL SPACING BETWEEN THE INNER FACES OF SAID RINGS, AND RING ENGAGING LUG MEANS ON SAID SPRING MEMBER ENGAGING THE INSIDE INNER EDGES OF SAID RINGS, SAID LUG MEANS COMPRISING BENT BACK REGIONS OF SAID WEB PORTIONS AT THE RADIALLY INNER ENDS OF SAID NOTCHES IN SAID WEB PORTIONS.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |