Patent US3208721A successfully refreshed from Google Patents.
US3208721A
Expired / Lapsed
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Valve diaphragm
Assignee: Raymark Industries Inc
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Filing: 1963-04-30
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Granted: 1965-09-28
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Expires: 1983-04-30
Abstract
No abstract record available.
Inventors
- 👤 Charles P Mchugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:39
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/12; F16K7/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
IN A VALVE DIAPHRAGM COMPRISING AN ELASTOMER BODY HAVING A DOMED SECTION PROVIDED WITH A CENTRLA NODULE MEMBER, A DIAPHRAGM LIFTING STUD HAVING A HEAD EMBEDDED IN SAID NODULE MEMBER AND A SHANK PROTRUDING THEREFROM, THE SAID ELASTOMER BODY BEING CAPABLE OF BEING FLEXED BETWEEN DOME UPRIGHT AND DOME INVERTED POSITIONS, A DISC EMBEDDED BOTH IN SAID DOMED SECTION AND IN SAID NODULE MEMBER, THE PART EMBEDDED IN SAID NODULE MEMBER BEING LOCATED ABOVE THE HEAD AND SURROUNDING THE SHANK OF SAID STUD, AND THE PART EMBEDDED IN SAID DOMED SECTION EXTENDING OVER A SUBSTANTIAL AREA OF THE DOMED SECTION, SAID DISC COMPRISING A TEAR RESISTANT, STIFF YET FLEXIBLE MEMBER MADE OF A NON-FABRIC SHEET OF PLASTIC MATERIAL ADHERINGLY ATTACHED TO THE ELASTOMER MATERIAL OF THE DIAPHRAGM BODY, SAID DISC HAVING A FLEXIBILITY CAPABLE OF FLEXING WITH THE DOMED SECTION OF THE DIAPHRAGM, SAID DISC ACTING TO STRENGTHEN THE DIAPHRAGM AGAINST STUD PULLOUT IN THE OPERATION OF THE VALVE.
Claim 2
Dependent Claim
159 words
IN A VALVE DIAPHRAGM COMPRISING AN ELASTOMER BODY HAVING A DOMED SECTION PROVIDED WITH A CENTRLA NODULE MEMBER, A DIAPHRAGM LIFTING STUD HAVING A HEAD EMBEDDED IN SAID NODULE MEMBER AND A SHANK PROTRUDING THEREFROM, THE SAID ELASTOMER BODY BEING CAPABLE OF BEING FLEXED BETWEEN DOME UPRIGHT AND DOME INVERTED POSITIONS, A DISC EMBEDDED BOTH IN SAID DOMED SECTION AND IN SAID NODULE MEMBER, THE PART EMBEDDED IN SAID NODULE MEMBER BEING LOCATED ABOVE THE HEAD AND SURROUNDING THE SHANK OF SAID STUD, AND THE PART EMBEDDED IN SAID DOMED SECTION EXTENDING OVER A SUBSTANTIAL AREA OF THE DOMED SECTION, SAID DISC COMPRISING A TEAR RESISTANT, STIFF YET FLEXIBLE MEMBER MADE OF A NON-FABRIC SHEET OF PLASTIC MATERIAL ADHERINGLY ATTACHED TO THE ELASTOMER MATERIAL OF THE DIAPHRAGM BODY, SAID DISC HAVING A FLEXIBILITY CAPABLE OF FLEXING WITH THE DOMED SECTION OF THE DIAPHRAGM, SAID DISC ACTING TO STRENGTHEN THE DIAPHRAGM AGAINST STUD PULLOUT IN THE OPERATION OF THE VALVE.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |