Patent US3181876A successfully refreshed from Google Patents.
US3181876A
Expired / Lapsed
US
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Piston cup
Assignee: PACKING SUPPLY CO
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Filing: 1963-05-22
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Granted: 1965-05-04
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Expires: 1983-05-22
Abstract
No abstract record available.
Inventors
- 👤 Maurice D Felt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:48
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PISTON CUP INCLUDING, IN COMBINATION, A DISC-CONFIGURED BASE PROVIDED WITH MOUNTING APERTURE MEANS; A PERIPHERAL FLANGE INTEGRAL WITH, EXTENDING LATERALLY FROM, AND CIRCUMSCRIBING SAID BASE, SAID BASE AND PERIPHERAL FLANGE BEING INTERGRALLY CAST OF A PRE-LIQUIFIED, CASTABLE PLASTIC MATERIAL; AND FLAT, WASHER-CONFIGURED, REINFORCING WEB MEANS IMBEDDED SOLELY IN SAID BASE FOR IMPENDING MATERIAL FLOW THEREAT UNDER PRESSURE IMPOSITION.
Claim 2
Dependent Claim
59 words
A PISTON CUP INCLUDING, IN COMBINATION, A DISC-CONFIGURED BASE PROVIDED WITH MOUNTING APERTURE MEANS; A PERIPHERAL FLANGE INTEGRAL WITH, EXTENDING LATERALLY FROM, AND CIRCUMSCRIBING SAID BASE, SAID BASE AND PERIPHERAL FLANGE BEING INTERGRALLY CAST OF A PRE-LIQUIFIED, CASTABLE PLASTIC MATERIAL; AND FLAT, WASHER-CONFIGURED, REINFORCING WEB MEANS IMBEDDED SOLELY IN SAID BASE FOR IMPENDING MATERIAL FLOW THEREAT UNDER PRESSURE IMPOSITION.
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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) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |