US3071343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for high pressure abrasive carrying fluids
Assignee: EDWARD VALVES Inc
•
Filing: 1953-08-18
•
Granted: 1963-01-01
•
Expires: 1973-08-18
Abstract
No abstract record available.
Inventors
- 👤 Bertram J Milleville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:32
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/0227
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A COMPOSITE VALVE SEAT INSERT FOR A VALVE HAVING INLET AND OUTLET FLOW PASSAGES AND A FLOW CONTROLLING GATE COMPRISING; A PAIR OF SPACED PARALLEL RESILIENT SEALING RINGS INTEGRALLY JOINED ONLY BY A RESILIENT BRIDGE EXTENDING AROUND A PORTION ONLY OF A CIRCUMFERENCE OF SAID RINGS; MEANS FORMING SEALING SURFACES ON SAID RINGS AND SAID BRIDGE ADAPTED TO YIELDINGLY ENGAGE SAID GATE; A RIGID ANNULAR REINFORCING MEMBER BONDED TO THE INNER PERIPHERY OF EACH OF SAID RINGS AND ADAPTED TO SUPPORTINGLY ENGAGE
Claim 2
Dependent Claim
82 words
A COMPOSITE VALVE SEAT INSERT FOR A VALVE HAVING INLET AND OUTLET FLOW PASSAGES AND A FLOW CONTROLLING GATE COMPRISING; A PAIR OF SPACED PARALLEL RESILIENT SEALING RINGS INTEGRALLY JOINED ONLY BY A RESILIENT BRIDGE EXTENDING AROUND A PORTION ONLY OF A CIRCUMFERENCE OF SAID RINGS; MEANS FORMING SEALING SURFACES ON SAID RINGS AND SAID BRIDGE ADAPTED TO YIELDINGLY ENGAGE SAID GATE; A RIGID ANNULAR REINFORCING MEMBER BONDED TO THE INNER PERIPHERY OF EACH OF SAID RINGS AND ADAPTED TO SUPPORTINGLY ENGAGE
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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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |