Patent US3265353A successfully refreshed from Google Patents.
US3265353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means for valves
Assignee: Seetru Ltd
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Filing: 1963-04-25
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Granted: 1966-08-09
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Expires: 1983-04-25
Abstract
No abstract record available.
Inventors
- 👤 Otto H Varga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:12
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A VALVE COMPRISING A FLAT, PLANAR SEAT MEMBER SURROUNDING A PORT OF PREDETERMINED CROSS-SECTION, A VALVE CLOSURE MEMBER POSITIONED DOWNSTREAM OF SAID PORT AND HAVING A PLANAR FACE ADAPTED TO BE BROUGHT INTO ABUTMENT WITH THE PLANAR SEAT WHEN THE PORT IS TO BE CLOSED, A DEEP RECESS IN SAID PLANAR FACE OF SAID VALVE CLOSURE MEMBER OPPOSITE SAID PORT, A SOLID RESILIENT SEALING ELEMENT FITTING SAID RECESS, THE OUTER FACE PORTION OF SAID SEALING ELEMENT HAVING A SHALLOW RECESS THEREIN WHOSE CROSS SECTIONAL AREA IS SLIGHTLY GREATER THAN THAT OF THE SAID PORT AND DEFINING A SEALING RIM, AND SAID RIM WHEN UNSTRESSED PROJECTING BEYOND THE PLANAR FACE OF SAID CLOSURE MEMBER, WHEREBY UPON CLOSING THE OPENING THE PROJECTION PORTION OF SAID SEALING MEMBER WILL FLOW TOWARD THE RECESS THEREIN AND INTO SAID PORT AND THEREBY FROM A TIGHT SEAL.
Claim 2
Dependent Claim
141 words
A VALVE COMPRISING A FLAT, PLANAR SEAT MEMBER SURROUNDING A PORT OF PREDETERMINED CROSS-SECTION, A VALVE CLOSURE MEMBER POSITIONED DOWNSTREAM OF SAID PORT AND HAVING A PLANAR FACE ADAPTED TO BE BROUGHT INTO ABUTMENT WITH THE PLANAR SEAT WHEN THE PORT IS TO BE CLOSED, A DEEP RECESS IN SAID PLANAR FACE OF SAID VALVE CLOSURE MEMBER OPPOSITE SAID PORT, A SOLID RESILIENT SEALING ELEMENT FITTING SAID RECESS, THE OUTER FACE PORTION OF SAID SEALING ELEMENT HAVING A SHALLOW RECESS THEREIN WHOSE CROSS SECTIONAL AREA IS SLIGHTLY GREATER THAN THAT OF THE SAID PORT AND DEFINING A SEALING RIM, AND SAID RIM WHEN UNSTRESSED PROJECTING BEYOND THE PLANAR FACE OF SAID CLOSURE MEMBER, WHEREBY UPON CLOSING THE OPENING THE PROJECTION PORTION OF SAID SEALING MEMBER WILL FLOW TOWARD THE RECESS THEREIN AND INTO SAID PORT AND THEREBY FROM A TIGHT SEAL.
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |