Patent US3333814A successfully refreshed from Google Patents.
US3333814A
Expired / Lapsed
US
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Wedge gate valve assembly
Assignee: THETFORD ENGINEERING Corp
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Filing: 1964-11-17
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Granted: 1967-08-01
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Expires: 1984-11-17
Abstract
No abstract record available.
Inventors
- 👤 Ronald J Sargent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:55
CPC Classifications
E; E03; E03F; E03F7/00; E03F7/02; F; F16; F16K; F16K3/00; F16K3/02; F16K3/0218; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A SLIDE ACTION GATE VALVE FOR USE IN A SEWAGE OR SEPTIC WASTE SYSTEM COMPRISING A VALVE BODY HAVING FIRST AND SECOND PORTIONS DEFINING AN OUTLET, A VALVE GATE SLIDABLY SUPPORTED IN SAID SECOND PORTION FOR MOVEMENT IN A PATH PERPENDICULAR TO THE AXIS OF SAID OUTLET FOR CLOSING SAID OUTLET, SAID VALVE GATE HAVING A BLADE PORTION WITH A FLAT PLANAR SURFACE FACING SAID FIRST PORTION, A RESILIENT FLEXIBLE SEAL RING SUPPORTED IN SAID FIRST PORTION ADJACENT TO THE PERIPHERY OF SAID OUTLET AND IN SEALING ENGAGEMENT WITH SAID FLAT PLANAR SURFACE WHEN SAID VALVE GATE IS IN ITS CLOSED POSITION, SAID SEAL RING HAVING A C-SHAPED CROSS SECTION WHICH OPENS RADIALLY INWARDLY AND DOWNWARDLY TOWARD SAID SECOND PORTION, THE INNER SURFACE OF THE LOWER LIP OF SAID SEAL RING BEING INCLINED DOWNWARDLY TO THE LIP TERMINUS AND EXTENDING INTO THE PATH OF MOVEMENT OF SAID BLADE PORTION AND ADAPTED TO BE URGED UPWARDLY BY THE ADVANCING EDGE OF SAID BLADE PORTION TO A POSITION IN SEALING ENGAGEMENT WITH SAID FLAT PLANAR SURFACE.
Claim 2
Dependent Claim
174 words
A SLIDE ACTION GATE VALVE FOR USE IN A SEWAGE OR SEPTIC WASTE SYSTEM COMPRISING A VALVE BODY HAVING FIRST AND SECOND PORTIONS DEFINING AN OUTLET, A VALVE GATE SLIDABLY SUPPORTED IN SAID SECOND PORTION FOR MOVEMENT IN A PATH PERPENDICULAR TO THE AXIS OF SAID OUTLET FOR CLOSING SAID OUTLET, SAID VALVE GATE HAVING A BLADE PORTION WITH A FLAT PLANAR SURFACE FACING SAID FIRST PORTION, A RESILIENT FLEXIBLE SEAL RING SUPPORTED IN SAID FIRST PORTION ADJACENT TO THE PERIPHERY OF SAID OUTLET AND IN SEALING ENGAGEMENT WITH SAID FLAT PLANAR SURFACE WHEN SAID VALVE GATE IS IN ITS CLOSED POSITION, SAID SEAL RING HAVING A C-SHAPED CROSS SECTION WHICH OPENS RADIALLY INWARDLY AND DOWNWARDLY TOWARD SAID SECOND PORTION, THE INNER SURFACE OF THE LOWER LIP OF SAID SEAL RING BEING INCLINED DOWNWARDLY TO THE LIP TERMINUS AND EXTENDING INTO THE PATH OF MOVEMENT OF SAID BLADE PORTION AND ADAPTED TO BE URGED UPWARDLY BY THE ADVANCING EDGE OF SAID BLADE PORTION TO A POSITION IN SEALING ENGAGEMENT WITH SAID FLAT PLANAR SURFACE.
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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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |