Patent US3168282A successfully refreshed from Google Patents.
US3168282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
All metal valve with particular head and seat construction
Assignee: Kane Engineering Laboratories
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Filing: 1961-09-13
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Granted: 1965-02-02
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Expires: 1981-09-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Donald W Latshaw
- 👤 Russell E Bostwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:55
CPC Classifications
F; F16; F16K; F16K51/00; F16K51/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
IN A VALVE CONSTRUCTION, A BODY HAVING A PASSAGEWAY AND INLET AND OUTLET PORTS CONNECTED TO THE PASSAGEWAY, AN ANNULAR RECESS FORMED IN THE BODY, A RELATIVELY SOFT METALLIC SEATING MATERIAL HAVING A RELATIVELY LOW MELTING POINT DISPOSED IN THE RECESS FORMED IN THE BODY, SAID SEATING MATERIAL BEING FORMED OF AN ALLOY IN INDIUM AND COPPER WITH THE COPPER RANGING IN PERCENTAGE FROM ONE PERCENT TO 10 PERCENT, AND A VALVE MEMBER MOVABLE INTO AND OUT OF ENGAGEMENT WITH THE SEAT.
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) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |