US3093864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for lining valves with plastic
Assignee: Dow Chemical Co
•
Filing: 1960-03-07
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Granted: 1963-06-18
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Expires: 1980-03-07
Abstract
No abstract record available.
Inventors
- 👤 William D Waldron
- 👤 Donald L Mcintosh
- 👤 Robert E Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:42
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/001; B29D23/003; B29D23/008; B29C; B29C33/00; B29C33/44; B29C33/48; B29C33/485; B29C45/00; B29C45/14; B29C45/14598; B29C45/14622; B29C70/00; B29C70/68; B29C70/78; F; F16; F16K; F16K27/00; F16K27/02; F16K27/0272; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7036; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A MANDREL ASSEMBLY FOR LINING THE BODY OF A DIAPHRAGM VALVE HAVING A PAIR OF DIAMETRICALLY ARRANGED PASSAGEWAYS DISPOSED ON OPPOSITE SIDES OF A SHALLOW WEIR AND AN OPENING LOCATED IN A PLANE NORMAL TO THE VERTICAL PLANE OF THE WEIR, WHICH MANDREL ASSEMBLY COMPRISES A WEIR MANDREL ADAPTED FOR POSITIONING IN SAID OPENING IN SPACED RELATION THERETO, A PAIR OF EARS ADAPTED FOR POSITIONING IN SAID PASSAGEWAYS IN SPACED RELATION THERETO AND IN INTERCONNECTED RELATION WITH THE WEIR MANDREL, AND A CONTOUR INSERT SUPPORTED UPON EACH EAR AND BEING FORMED TO
Claim 2
Dependent Claim
92 words
A MANDREL ASSEMBLY FOR LINING THE BODY OF A DIAPHRAGM VALVE HAVING A PAIR OF DIAMETRICALLY ARRANGED PASSAGEWAYS DISPOSED ON OPPOSITE SIDES OF A SHALLOW WEIR AND AN OPENING LOCATED IN A PLANE NORMAL TO THE VERTICAL PLANE OF THE WEIR, WHICH MANDREL ASSEMBLY COMPRISES A WEIR MANDREL ADAPTED FOR POSITIONING IN SAID OPENING IN SPACED RELATION THERETO, A PAIR OF EARS ADAPTED FOR POSITIONING IN SAID PASSAGEWAYS IN SPACED RELATION THERETO AND IN INTERCONNECTED RELATION WITH THE WEIR MANDREL, AND A CONTOUR INSERT SUPPORTED UPON EACH EAR AND BEING FORMED TO
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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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |