Patent US3202171A successfully refreshed from Google Patents.
US3202171A
Expired / Lapsed
US
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Welded slide valve casing with sealing face supporting means
Assignee: Hermann Rappold and Co GmbH
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Filing: 1962-06-01
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Granted: 1965-08-24
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Expires: 1982-06-01
Abstract
No abstract record available.
Inventors
- 👤 Rappold Hermann
- 👤 Uerlichs Johannes
- 👤 Muller Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:21
CPC Classifications
F; F16; F16K; F16K49/00; F16K49/005; F16K27/00; F16K27/10; F16K27/105; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A SHUT-OFF SLIDE VALVE CASING, IN PARTICULAR FOR A HOT AIR SLIDE VALVE COMPRISING A CASING HAVING PERIPHERAL FLANGE PORTIONS, SEALING FACES UPON SAID CASING WHICH COOPERATE WITH THE SEALING FACES OF THE SLIDR BODY, SAID CASING HAVING COOLING SPACES TO COOL SAID SEALING FACES UPON SAID SLIDE VALVE CASING, SAID SLIDE VALVE CASING HAVING SAID SEALING FACES BEING WELDED AND SUPPORTING
Claim 2
Dependent Claim
62 words
A SHUT-OFF SLIDE VALVE CASING, IN PARTICULAR FOR A HOT AIR SLIDE VALVE COMPRISING A CASING HAVING PERIPHERAL FLANGE PORTIONS, SEALING FACES UPON SAID CASING WHICH COOPERATE WITH THE SEALING FACES OF THE SLIDR BODY, SAID CASING HAVING COOLING SPACES TO COOL SAID SEALING FACES UPON SAID SLIDE VALVE CASING, SAID SLIDE VALVE CASING HAVING SAID SEALING FACES BEING WELDED AND SUPPORTING
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |