Patent US3143933A successfully refreshed from Google Patents.
US3143933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder and sealing ring combination
Assignee: NORTON ENGINEERING Inc
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Filing: 1962-12-03
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Granted: 1964-08-11
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Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Norton Orlo Clair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:19
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1438; F15B15/20; F15B15/22; F15B15/226
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A CYLINDER AND PISTON COMBINATION COMPRISING A CYLINDER BARREL, A PISTON RECIPROCABLY SUPPORTED IN SAID CYLINDER BARREL, ROD MEANS ATTACHED TO ONE SIDE OF SAID PISTON, A HEAD ON SAID BARREL, RECESSES IN SAID PISTON DEFINING OPENINGS, RESILIENT MEMBERS BETWEEN SAID HEAD AND SAID PISTON IN SAID RECESSES AND ATTACHED TO SAID PISTON, SAID RESILIENT MEMBERS EXTENDING OUT OF SAID RECESSES TOWARD SAID HEAD, SAID RECESSES BEING LARGER IN LATERAL DIMENSION THAN SAID RESILIENT MEMBERS, SAID PISTON BEING ADAPTED TO COME INTO PROXIMATE RELATION WITH SAID HEAD, SAID RECESSES HAVING A VOLUME WHICH WILL SUBSTANTIALLY ACCOMMODATE THE ENTIRE VOLUME OF SAID RESILIENT MEMBERS WHEREBY SAID RESILIENT MEMBERS WILL BE DISTORTED INTO SAID RECESSES WHEN SAID PISTON COMES INTO PROXIMATE RELATION WITH SAID HEAD.
Claim 2
Dependent Claim
123 words
A CYLINDER AND PISTON COMBINATION COMPRISING A CYLINDER BARREL, A PISTON RECIPROCABLY SUPPORTED IN SAID CYLINDER BARREL, ROD MEANS ATTACHED TO ONE SIDE OF SAID PISTON, A HEAD ON SAID BARREL, RECESSES IN SAID PISTON DEFINING OPENINGS, RESILIENT MEMBERS BETWEEN SAID HEAD AND SAID PISTON IN SAID RECESSES AND ATTACHED TO SAID PISTON, SAID RESILIENT MEMBERS EXTENDING OUT OF SAID RECESSES TOWARD SAID HEAD, SAID RECESSES BEING LARGER IN LATERAL DIMENSION THAN SAID RESILIENT MEMBERS, SAID PISTON BEING ADAPTED TO COME INTO PROXIMATE RELATION WITH SAID HEAD, SAID RECESSES HAVING A VOLUME WHICH WILL SUBSTANTIALLY ACCOMMODATE THE ENTIRE VOLUME OF SAID RESILIENT MEMBERS WHEREBY SAID RESILIENT MEMBERS WILL BE DISTORTED INTO SAID RECESSES WHEN SAID PISTON COMES INTO PROXIMATE RELATION WITH SAID HEAD.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |