Patent US3334858A successfully refreshed from Google Patents.
US3334858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swinging disc valves with supplemental operator
Assignee: Individual
•
Filing: 1964-07-02
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Granted: 1967-08-08
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Expires: 1984-07-02
Abstract
No abstract record available.
Inventors
- 👤 Robert B Hay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:55
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/20; F16K1/2007; F16K1/2028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN IMPROVED COMBINATION STOP AND CHECK VALVE WHICH COMPRISES A BODY PORTION HAVING AN INLET AND AN OUTLET, FREE SWINGING MEANS WITHIN SAID BODY PORTION ADAPTED TO SWING TOWARD AND AWAY FROM AND TO SEAL SAID INLET, TRACKS WITHIN SAID BODY PORTION POSITIONED TO FACE SAID INLET, ROLLER MEANS ADAPTED TO MOVE ALONG SAID TRACKS, MEANS ASSOCIATED WITH SAID ROLLER MEANS BUT NOT PHYSICALLY CONNECTED TO SAID SWINGING MEANS ADAPTED TO FORCE SAID SWINGING MEANS AGAINST SAID INLET WHEN SAID ROLLER MEANS MOVE ALONG SAID TRACKS, AND MEANS TO MOVE SAID ROLLER MEANS ALONG SAID TRACK.
Claim 2
Dependent Claim
96 words
AN IMPROVED COMBINATION STOP AND CHECK VALVE WHICH COMPRISES A BODY PORTION HAVING AN INLET AND AN OUTLET, FREE SWINGING MEANS WITHIN SAID BODY PORTION ADAPTED TO SWING TOWARD AND AWAY FROM AND TO SEAL SAID INLET, TRACKS WITHIN SAID BODY PORTION POSITIONED TO FACE SAID INLET, ROLLER MEANS ADAPTED TO MOVE ALONG SAID TRACKS, MEANS ASSOCIATED WITH SAID ROLLER MEANS BUT NOT PHYSICALLY CONNECTED TO SAID SWINGING MEANS ADAPTED TO FORCE SAID SWINGING MEANS AGAINST SAID INLET WHEN SAID ROLLER MEANS MOVE ALONG SAID TRACKS, AND MEANS TO MOVE SAID ROLLER MEANS ALONG SAID TRACK.
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |