US3137935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of producing gaskets
Assignee: Individual
•
Filing: 1961-06-08
•
Granted: 1964-06-23
•
Expires: 1981-06-08
Abstract
No abstract record available.
Inventors
- 👤 Gachot Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:10
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0053; B26; B26D; B26D3/00; B26D3/16; B29C; B29C63/00; B29C63/22; B29C69/00; F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/108; B29C2793/00; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29L; B29L2031/00; B29L2031/26; Y; Y10; Y10S; Y10S277/00; Y10S277/924; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49798; Y10T29/49826; Y10T29/49863; Y10T29/4987
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A METHOD FOR MANUFACTURING GASKETS WHICH COMPRISE AN ANNULAR CORE HAVING TWO PARALLEL SIDE FACES AND HOUSED IN A ONE-PIECE CASING TO A FLEXIBLE SYNTHETIC MATERIAL NOT ADAPTED TO BE WELDED TO ITSELF, SUCH AS POLYTETRAFLUOROETHYLENE, SAID CASING HAVING ONE INTERMEDIATE FLANK IN CONTACT WITH ONE OF SAID CORE SIDE FACES, AND TWO OTHER FLANKS ATTACHED THERETO IN OVERLAPPING RELATIONSHIP ON THE OTHER ONE OF SAID SIDE FACES OF SAID COE, SAID METHOD COMPRISING FORMING WITH THE MATERIAL OF THE CASING A TUBULAR BELLOWS WITH A Z-SHAPED CROSS SECTION COMPRISING TWO OPPOSITE FOLDS AND THREE SUBSTANTIALLY RADIALLY EXTENDING FLANKS THE WIDETH OF WHICH IS SLIGHTLY GREATER THAN THAT OF THE CORE, INTRODUCING SAID ANNULAR CORE INTO THE FOLD OF THE CASING OPEN TOWARD THE BORE OF THE BELLOWS AND FORMED BY TWO CONSECUTIVE FLANKS OF SAID BELLOWS THEREBY FORMING AN ANNULAR ASSEMBLY HAVING A CENTRAL OPENING THEREIN, INTRODUCING THE THIRD FLANK OF SAID CASING INTO SAID CENTRAL OPENING BY FOLDING IT OVER AND CONTINUING THE TURNING OVER OF SAID FLANK UNTIL IT IS BROUGHT IN OVERLAPPING POSITION ONTO SAID FIRST FLANK OF SAID CASING WHICH BEARS AGAINST SAID CORE.
Claim 2
Independent Claim
189 words
A METHOD FOR MANUFACTURING GASKETS WHICH COMPRISE AN ANNULAR CORE HAVING TWO PARALLEL SIDE FACES AND HOUSED IN A ONE-PIECE CASING TO A FLEXIBLE SYNTHETIC MATERIAL NOT ADAPTED TO BE WELDED TO ITSELF, SUCH AS POLYTETRAFLUOROETHYLENE, SAID CASING HAVING ONE INTERMEDIATE FLANK IN CONTACT WITH ONE OF SAID CORE SIDE FACES, AND TWO OTHER FLANKS ATTACHED THERETO IN OVERLAPPING RELATIONSHIP ON THE OTHER ONE OF SAID SIDE FACES OF SAID COE, SAID METHOD COMPRISING FORMING WITH THE MATERIAL OF THE CASING A TUBULAR BELLOWS WITH A Z-SHAPED CROSS SECTION COMPRISING TWO OPPOSITE FOLDS AND THREE SUBSTANTIALLY RADIALLY EXTENDING FLANKS THE WIDETH OF WHICH IS SLIGHTLY GREATER THAN THAT OF THE CORE, INTRODUCING SAID ANNULAR CORE INTO THE FOLD OF THE CASING OPEN TOWARD THE BORE OF THE BELLOWS AND FORMED BY TWO CONSECUTIVE FLANKS OF SAID BELLOWS THEREBY FORMING AN ANNULAR ASSEMBLY HAVING A CENTRAL OPENING THEREIN, INTRODUCING THE THIRD FLANK OF SAID CASING INTO SAID CENTRAL OPENING BY FOLDING IT OVER AND CONTINUING THE TURNING OVER OF SAID FLANK UNTIL IT IS BROUGHT IN OVERLAPPING POSITION ONTO SAID FIRST FLANK OF SAID CASING WHICH BEARS AGAINST SAID CORE.
References Cited (Backward Citations)
US2924008A
Cited
US1926628A
Cited
US2263815A
Cited
US2459720A
Cited
US2459721A
Cited
US2580546A
Cited
US2597976A
Cited
US2868575A
Cited
US2859061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |