US3081100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston rings
Assignee: Muskegon Piston Ring Co
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Filing: 1958-06-12
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Granted: 1963-03-12
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Expires: 1978-06-12
Abstract
No abstract record available.
Inventors
- 👤 Nisper Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:58
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/06; F16J9/064; F16J9/066; F16J9/069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A SPACER EXPANDER FOR A PISTON RING COMPRISING: A PLURALITY OF ANNULI SPACED FROM EACH OTHER; A WEB ADJACENT TO EACH ANNULUS AND JOINING SAID ANNULI ONE TO THE OTHER; SAID ANNULI BEING BENT ALONG TWO PARALLEL LINES EXTENDING LONGITUDINALLY OF SAID SPACER EXPANDER ONE ON EACH SIDE OF SAID WEBS WHEREBY SAID SPACER EXPANDER HAS A GENERALLY U-SHAPED CROSS SECTIONAL CONFIGURATION AND OUTER END PORTIONS OF SAID ANNULI FORM SPACED PARALLEL RAIL SEATS; SAID SPACER EXPANDER BEING CIRCULAR WITH SAID WEBS ON THE RADIAL OUTER PERIPHERY THEREOF; TONGUE-LIKE RAIL STOPS PROJECTING FROM THE SIDES OF CERTAIN OF SAID WEBS; PORTIONS OF SAID RAIL STOPS BEING BENT ALONG THE SAME LINES AS SAID ANNULI AND LYING IN THE SAME PLANE AS SAID RAIL SEATS; THE ENDS OF SAID RAIL STOPS PROJECTING OUTWARDLY FROM THE FACES OF SAID RAIL SEATS AND ADAPTED TO SERVE AS RAIL ENGAGING PADS.
Claim 2
Dependent Claim
147 words
A SPACER EXPANDER FOR A PISTON RING COMPRISING: A PLURALITY OF ANNULI SPACED FROM EACH OTHER; A WEB ADJACENT TO EACH ANNULUS AND JOINING SAID ANNULI ONE TO THE OTHER; SAID ANNULI BEING BENT ALONG TWO PARALLEL LINES EXTENDING LONGITUDINALLY OF SAID SPACER EXPANDER ONE ON EACH SIDE OF SAID WEBS WHEREBY SAID SPACER EXPANDER HAS A GENERALLY U-SHAPED CROSS SECTIONAL CONFIGURATION AND OUTER END PORTIONS OF SAID ANNULI FORM SPACED PARALLEL RAIL SEATS; SAID SPACER EXPANDER BEING CIRCULAR WITH SAID WEBS ON THE RADIAL OUTER PERIPHERY THEREOF; TONGUE-LIKE RAIL STOPS PROJECTING FROM THE SIDES OF CERTAIN OF SAID WEBS; PORTIONS OF SAID RAIL STOPS BEING BENT ALONG THE SAME LINES AS SAID ANNULI AND LYING IN THE SAME PLANE AS SAID RAIL SEATS; THE ENDS OF SAID RAIL STOPS PROJECTING OUTWARDLY FROM THE FACES OF SAID RAIL SEATS AND ADAPTED TO SERVE AS RAIL ENGAGING PADS.
References Cited (Backward Citations)
US2827349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |