Patent US3413990A successfully refreshed from Google Patents.
US3413990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve having a plug fitted with a plastic bellows element and method of assembly thereof
Assignee: Individual
•
Filing: 1967-03-03
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Granted: 1968-12-03
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Expires: 1987-03-03
Abstract
No abstract record available.
Inventors
- 👤 Gachot Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:00
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/10; F16K41/12; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0402; Y10T137/0491; Y10T137/0519
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A METHOD WHEREBY THE EXTREMITY OF A LEAKPROOF BELLOWS ELEMENT WHICH IS JOINED TO A VALVE PLUG AND WHICH SURROUNDS THE OPERATING STEM OF SAID VALVE PLUG IS ASSEMBLED IN LEAK-TIGHT MANNER WITHIN A VALVE HEAD, SAID METHOD COMPRISING ENGAGING THE EXTREMITY OF SAID BELLOWS ELEMENT WHICH IS REMOTE FROM SAID PLUG INTO A VALVE-HEAD OPENING OF COMPARABLE WIDTH WHICH TERMINATES IN A CAVITY OF LARGER SIZE, FITTING IN THE TERMINAL PORTION OF SAID BELLOWS ELEMENT A FLEXIBLE RING WHICH HAS A GREATER WIDTH THAN THAT OF THE AFORESAID OPENING BUT THE INTERNAL DIAMETER OF WHICH IS SMALLER THAN THE EXTERNAL DIAMETER OF AN ANNULAR FLANGE FORMED AT THAT EXTREMITY OF SAID BELLOWS ELEMENT WHICH IS REMOTE FROM SAID VALVE PLUG, AND FITTING INSIDE SAID RING A THICK WASHER FORMED OF SEVERAL ABUTTINGLY ASSEMBLED COMPONENTS, WHEREUPON THE ASSEMBLY CONSISTING OF THE TERMINAL PORTION OF SAID BELLOWS ELEMENT, SAID RING AND WASHER IS CLAMPED AGAINST THE BOTTOM OF SAID CAVITY.
Claim 2
Independent Claim
159 words
A METHOD WHEREBY THE EXTREMITY OF A LEAKPROOF BELLOWS ELEMENT WHICH IS JOINED TO A VALVE PLUG AND WHICH SURROUNDS THE OPERATING STEM OF SAID VALVE PLUG IS ASSEMBLED IN LEAK-TIGHT MANNER WITHIN A VALVE HEAD, SAID METHOD COMPRISING ENGAGING THE EXTREMITY OF SAID BELLOWS ELEMENT WHICH IS REMOTE FROM SAID PLUG INTO A VALVE-HEAD OPENING OF COMPARABLE WIDTH WHICH TERMINATES IN A CAVITY OF LARGER SIZE, FITTING IN THE TERMINAL PORTION OF SAID BELLOWS ELEMENT A FLEXIBLE RING WHICH HAS A GREATER WIDTH THAN THAT OF THE AFORESAID OPENING BUT THE INTERNAL DIAMETER OF WHICH IS SMALLER THAN THE EXTERNAL DIAMETER OF AN ANNULAR FLANGE FORMED AT THAT EXTREMITY OF SAID BELLOWS ELEMENT WHICH IS REMOTE FROM SAID VALVE PLUG, AND FITTING INSIDE SAID RING A THICK WASHER FORMED OF SEVERAL ABUTTINGLY ASSEMBLED COMPONENTS, WHEREUPON THE ASSEMBLY CONSISTING OF THE TERMINAL PORTION OF SAID BELLOWS ELEMENT, SAID RING AND WASHER IS CLAMPED AGAINST THE BOTTOM OF SAID CAVITY.
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) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |