US3134571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm assembly for diaphragm valves
Assignee: Grinnell Corp
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Filing: 1961-05-05
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Granted: 1964-05-26
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Expires: 1981-05-05
Abstract
No abstract record available.
Inventors
- 👤 Henry W Boteler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:32
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/12; F16K7/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A DIAPHRAGM ASSEMBLY FOR A VALVE HAVING AN ACTUATING MECHANISM, SAID ASSEMBLY COMPRISING: (A) A THIN IMPERFORATE PLASTIC FACING SHEET ADAPTED TO WITHSTAND EXPOSURE TO MANY FLUIDS, SAID FACING SHEET BEING OF UNIFORM THICKNESS THROUGHOUT AND INCLUDING: (1) A NORMALLY SUBSTANTIALLY CONCAVO-CONVEX CENTRAL PORTION HAVING A SUBSTANTIALLY FLAT CENTER PORTION, (2) A PERIPHERAL FLAT PORTION INTEGRAL WITH THE OUTER RIM OF SAID CENTRAL PORTION AND ADAPTED TO BE CLAMPED, (B) A RESILIENT ELASTOMER BACKING CUSHION SHEET BEING RELATIVELY MUCH THICKER THAN SAID FACING SHEET AND OF SUBSTANTIALLY UNIFORM THICKNESS AND INCLUDING: (1) A NORMALLY SUBSTANTIALLY CONCAVO-CONVEX CENTRAL PORTION, (2) A PERIPHERAL FLAT PORTION INTEGRAL WITH THE OUTER RIM OF SAID CENTRAL PORTION AND ADAPTED TO BE CLAMPED WITH THE PERIPHERAL PORTION OF SAID FACING SHEET, (3) A RAISED SUBSTANTIALLY CENTRALLY LOCATED BOSS ON THE CONVEX SURFACE OF SAID BACKING CUSHION AND INTEGRAL THEREWITH,
Claim 2
Dependent Claim
143 words
A DIAPHRAGM ASSEMBLY FOR A VALVE HAVING AN ACTUATING MECHANISM, SAID ASSEMBLY COMPRISING: (A) A THIN IMPERFORATE PLASTIC FACING SHEET ADAPTED TO WITHSTAND EXPOSURE TO MANY FLUIDS, SAID FACING SHEET BEING OF UNIFORM THICKNESS THROUGHOUT AND INCLUDING: (1) A NORMALLY SUBSTANTIALLY CONCAVO-CONVEX CENTRAL PORTION HAVING A SUBSTANTIALLY FLAT CENTER PORTION, (2) A PERIPHERAL FLAT PORTION INTEGRAL WITH THE OUTER RIM OF SAID CENTRAL PORTION AND ADAPTED TO BE CLAMPED, (B) A RESILIENT ELASTOMER BACKING CUSHION SHEET BEING RELATIVELY MUCH THICKER THAN SAID FACING SHEET AND OF SUBSTANTIALLY UNIFORM THICKNESS AND INCLUDING: (1) A NORMALLY SUBSTANTIALLY CONCAVO-CONVEX CENTRAL PORTION, (2) A PERIPHERAL FLAT PORTION INTEGRAL WITH THE OUTER RIM OF SAID CENTRAL PORTION AND ADAPTED TO BE CLAMPED WITH THE PERIPHERAL PORTION OF SAID FACING SHEET, (3) A RAISED SUBSTANTIALLY CENTRALLY LOCATED BOSS ON THE CONVEX SURFACE OF SAID BACKING CUSHION AND INTEGRAL THEREWITH,
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) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |