US2717025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasket and method for forming same
Assignee: MW Kellogg Co
•
Filing: 1952-12-19
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Granted: 1955-09-06
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Expires: 1972-12-19
Abstract
No abstract record available.
Inventors
- 👤 Jelinek Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:24
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3284; B; B29; B29C; B29C43/00; B29C43/006; B29C63/00; B29C63/22; B29C65/00; B29C65/02; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/116; B29C66/1162; B29C66/14; B29C66/50; B29C66/51; B29C66/54; B29C66/70; B29C66/71; F16J15/02; F16J15/06; F16J15/10; F16J15/108; F16J15/328; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29K2105/00; B29K2105/25; B29K2105/251; B29L; B29L2031/00; B29L2031/26; B29L2031/265; B29L2031/709; B29L2031/7096; B29L2031/7102; Y; Y10; Y10S; Y10S264/00; Y10S264/67; Y10S277/00; Y10S277/91; Y10S277/922; Y10S285/00; Y10S285/909; Y10S417/00; Y10S417/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A METHOD FOR FORMING A GASKET COMPRISING: FORMING A CORE COMPRISING A NON-METALLIC RESILIENT SOLID MATERIAL; COMPRESSING A MASS COMPRISING A FINELY DIVIDED SOLID POLYMER OF TETRAFLUOROETHYLENE AT A TEMPERATURE BELOW ABOUT 700* F. IN THE FORM OF TOROIDAL HALF-SHELL COMPRISING AN ADHERENT UNFUSED MASS OF SAID FINELY DIVIDED SOLID POLYMER; COVERING SAID CORE WITH A COMPLEMENTARY PAIR OF SAID TOROIDAL HALF-SHELLS; SINTERING THE RESULTING ARTICLE IN THE DIE AT A TEMPERATURE BETWEEN ABOUT 700* F. AND BOUT 800* F. TO FUSE SAID MASS OF SAID FINELY DIVIDED SOLID POLYMER AND BOND SAID TOROIDAL HALF-SHELLS TOGETHER INTO THE FORM OF A GASKET HAVING A SEAMLESS HOMOGENEOUS SHEATH ABOUT SAID CORE; AND REMOVING THE GASKET THUS FORMED FROM SAID DIE.
Claim 2
Independent Claim
119 words
A METHOD FOR FORMING A GASKET COMPRISING: FORMING A CORE COMPRISING A NON-METALLIC RESILIENT SOLID MATERIAL; COMPRESSING A MASS COMPRISING A FINELY DIVIDED SOLID POLYMER OF TETRAFLUOROETHYLENE AT A TEMPERATURE BELOW ABOUT 700* F. IN THE FORM OF TOROIDAL HALF-SHELL COMPRISING AN ADHERENT UNFUSED MASS OF SAID FINELY DIVIDED SOLID POLYMER; COVERING SAID CORE WITH A COMPLEMENTARY PAIR OF SAID TOROIDAL HALF-SHELLS; SINTERING THE RESULTING ARTICLE IN THE DIE AT A TEMPERATURE BETWEEN ABOUT 700* F. AND BOUT 800* F. TO FUSE SAID MASS OF SAID FINELY DIVIDED SOLID POLYMER AND BOND SAID TOROIDAL HALF-SHELLS TOGETHER INTO THE FORM OF A GASKET HAVING A SEAMLESS HOMOGENEOUS SHEATH ABOUT SAID CORE; AND REMOVING THE GASKET THUS FORMED FROM SAID DIE.
References Cited (Backward Citations)
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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) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |