US3117795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spiral wound gasket
Assignee: Gasket Holdings Inc
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Filing: 1961-08-04
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Granted: 1964-01-14
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Expires: 1981-08-04
Abstract
No abstract record available.
Inventors
- 👤 William R Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:39
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; F16J15/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A GASKET HAVING CORROSION RESISTANT PROPERTIES COMPRISING A SPIRAL WOUND METAL STRIP IN THE FORM OF A PLURALITY OF CONVOLUTIONS WITH A FILLER OF NON-METALLIC MATERIAL DISPOSED BETWEEN ADJACENT CONVOLUTIONS, AND A ONEPIECE ENVELOPE OF MOLDED PLASTIC CORROSION-RESISTANT MATERIAL ENCLOSING SAID GASKET AND CONSISTING OF AN INNER SEALING RING WITHIN THE INNER PERIPHERY OF THE GASKET, AND A FILM DISPOSED OVER THE TWO SIDES THEREOF IN A UNITARY STRUCTURE, SAID INNER SEALING RING HAVING AN ANNULAR GROOVE EXTENDING FROM THE INNER PERIPHERY THEREOF TO FORM A PAIR OF FLANGES TERMINATING AT THE INNERMOST PERIPHERY OF SAID GASKET, SAID FLANGES ADAPTED TO BE BROUGHT INTO SEALING CONTACT WITH A SEALING SURFACE BY REASON OF FLUID PRESSURE EXERTED FROM THE INNERMOST PERIPHERY OF SAID GASKET.
Claim 2
Dependent Claim
123 words
A GASKET HAVING CORROSION RESISTANT PROPERTIES COMPRISING A SPIRAL WOUND METAL STRIP IN THE FORM OF A PLURALITY OF CONVOLUTIONS WITH A FILLER OF NON-METALLIC MATERIAL DISPOSED BETWEEN ADJACENT CONVOLUTIONS, AND A ONEPIECE ENVELOPE OF MOLDED PLASTIC CORROSION-RESISTANT MATERIAL ENCLOSING SAID GASKET AND CONSISTING OF AN INNER SEALING RING WITHIN THE INNER PERIPHERY OF THE GASKET, AND A FILM DISPOSED OVER THE TWO SIDES THEREOF IN A UNITARY STRUCTURE, SAID INNER SEALING RING HAVING AN ANNULAR GROOVE EXTENDING FROM THE INNER PERIPHERY THEREOF TO FORM A PAIR OF FLANGES TERMINATING AT THE INNERMOST PERIPHERY OF SAID GASKET, SAID FLANGES ADAPTED TO BE BROUGHT INTO SEALING CONTACT WITH A SEALING SURFACE BY REASON OF FLUID PRESSURE EXERTED FROM THE INNERMOST PERIPHERY OF SAID GASKET.
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) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |