US3191948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston ring
Assignee: Muskegon Piston Ring Co
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Filing: 1962-05-14
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Granted: 1965-06-29
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Expires: 1982-05-14
Abstract
No abstract record available.
Inventors
- 👤 Douglas W Hamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:49
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/06; F16J9/064; F16J9/066; F16J9/069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A PISTON RING COMPRISING: A RADIALLY EXTENDING FLAT CIRCULAR LAND PORTION FORMING ONE SIDE AND AN OUTER RADIAL EDGE OF SAID RING; SAID LAND PORTION BEING SUBDIVIDED INTO A PLURALITY OF SHORT SEGMENTS; A PLURALITY OF CIRCUMFERENTIALLY SPACED FINGERS; SAID FINGERS BEING ARRANGED IN PAIRS, ONE LEG OF EACH PAIR BEING INTEGRAL WITH A DIFFERENT LAND SEGMENT; SAID LEGS AT THE ENDS REMOTE FROM SAID LAND SEGMENTS BEING INTEGRALLY JOINED AND FORMING THE ONLY CONNECTION BETWEEN ADJACENT LAND SEGMENTS; PORTIONS OF SAID FINGERS FORMING THE AXIALLY EXTENDING RADIALLY INNER BIGHT PORTION OF SAID RING AND OTHER PORTIONS FORMING THE OTHER SIDE OF SAID RING; A PORTION OF SAID OTHER SIDE BEING OFFSET TOWARD SAID LAND SEGMENTS AND FORMING A RAIL SEAT; SAID FINGERS AT SAID OFFSET EXTENDING GENERALLY AXIALLY AND FORMING STOPS FOR ENGAGING THE INNER RADIAL EDGE OF A RAIL SEGMENT, SAID STOPS BEING RADIALLY SPACED FROM SAID INNER BIGHT PORTION OF SAID RING; THE ENDS OF SAID FINGERS RADIALLY OUTWARDLY OF SAID RAIL SEAT EXTENDING PARALLEL TO SAID BIGHT PORTION AND SUBSTANTIALLY CLOSING THE OUTER RADIAL FACE OF SAID RING.
Claim 2
Dependent Claim
182 words
A PISTON RING COMPRISING: A RADIALLY EXTENDING FLAT CIRCULAR LAND PORTION FORMING ONE SIDE AND AN OUTER RADIAL EDGE OF SAID RING; SAID LAND PORTION BEING SUBDIVIDED INTO A PLURALITY OF SHORT SEGMENTS; A PLURALITY OF CIRCUMFERENTIALLY SPACED FINGERS; SAID FINGERS BEING ARRANGED IN PAIRS, ONE LEG OF EACH PAIR BEING INTEGRAL WITH A DIFFERENT LAND SEGMENT; SAID LEGS AT THE ENDS REMOTE FROM SAID LAND SEGMENTS BEING INTEGRALLY JOINED AND FORMING THE ONLY CONNECTION BETWEEN ADJACENT LAND SEGMENTS; PORTIONS OF SAID FINGERS FORMING THE AXIALLY EXTENDING RADIALLY INNER BIGHT PORTION OF SAID RING AND OTHER PORTIONS FORMING THE OTHER SIDE OF SAID RING; A PORTION OF SAID OTHER SIDE BEING OFFSET TOWARD SAID LAND SEGMENTS AND FORMING A RAIL SEAT; SAID FINGERS AT SAID OFFSET EXTENDING GENERALLY AXIALLY AND FORMING STOPS FOR ENGAGING THE INNER RADIAL EDGE OF A RAIL SEGMENT, SAID STOPS BEING RADIALLY SPACED FROM SAID INNER BIGHT PORTION OF SAID RING; THE ENDS OF SAID FINGERS RADIALLY OUTWARDLY OF SAID RAIL SEAT EXTENDING PARALLEL TO SAID BIGHT PORTION AND SUBSTANTIALLY CLOSING THE OUTER RADIAL FACE OF SAID RING.
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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |