US3132870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaskets and method of making same
Assignee: Individual
•
Filing: 1962-12-14
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Granted: 1964-05-12
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Expires: 1982-12-14
Abstract
No abstract record available.
Inventors
- 👤 Karl J Pschera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:20
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0887; F16L; F16L23/00; F16L23/16; F16L23/18; F16L23/20; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/939; Y10S277/941; Y10S277/942
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A COMPRESSIBLE GASKET COMPRISING: (A) A THIN METAL STRIP OF UNIFORM WIDTH WOUND INTO A SPIRAL; (B) A LAYER OF HEAT RESISTANT COMPRESSIBLE MATERIAL INTERPOSED BETWEEN THE SEVERAL CONVOLUTIONS OF SAID SPIRAL; (C) EACH OF SIDE SURFACES OF SAID SPIRAL AND SAID HEAT RESISTANT COMPRESSIBLE MATERIAL LYING IN A COMMON PLANE; AND (D) A THIN LAYER OF SOFT METAL AFFIXED TO EACH OF SAID SIDE SURFACES.
Claim 2
Dependent Claim
66 words
A COMPRESSIBLE GASKET COMPRISING: (A) A THIN METAL STRIP OF UNIFORM WIDTH WOUND INTO A SPIRAL; (B) A LAYER OF HEAT RESISTANT COMPRESSIBLE MATERIAL INTERPOSED BETWEEN THE SEVERAL CONVOLUTIONS OF SAID SPIRAL; (C) EACH OF SIDE SURFACES OF SAID SPIRAL AND SAID HEAT RESISTANT COMPRESSIBLE MATERIAL LYING IN A COMMON PLANE; AND (D) A THIN LAYER OF SOFT METAL AFFIXED TO EACH OF SAID SIDE SURFACES.
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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |