US3134393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air and vacuum valve apparatus
Assignee: Individual
•
Filing: 1962-06-22
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Granted: 1964-05-26
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Expires: 1982-06-22
Abstract
No abstract record available.
Inventors
- 👤 Kerr Samuel Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:47
CPC Classifications
E; E03; E03B; E03B7/00; E03B7/07; E03B7/077; F; F16; F16K; F16K17/00; F16K17/18; F16K17/19; F16K2200/00; F16K2200/40; F16K2200/401; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7848; Y10T137/7849
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
IN THE COMBINATION OF A PIPELINE AND AN AIR AND VACUUM VALVE CONNECTED TO SAID PIPELINE, THE IMPROVEMENT WHICH INCLUDES (A) CHECK VALVE MEANS CONNECTED BETWEEN SAID AIR AND VACUUM VALVE AND SAID PIPELINE, SAID CHECK VALVE MEANS INCLUDING (I) MEANS DEFINING AN APERTURE POSITIONED BETWEEN SAID AIR AND VACUUM VALVE AND SAID PIPELINE, (II) MEANS AT SAID APERTURE DEFINING A VALVE SEAT, (III) A VALVE ELEMENT POSITIONED ON THE SIDE OF SAID VALVE SEAT ON THE PIPELINE SIDE THEREOF AND MOVABLE BETWEEN AN OPEN POSITION REMOTE FROM SAID VALVE SEAT AND A CLOSED POSITION COOPERATING WITH SAID VALVE SEAT, AND (IV) RESILIENT MEANS NORMALLY BIASING SAID VALVE ELEMENT AWAY FROM SAID OPEN POSITION SUBSTANTIALLY TO SAID CLOSED POSITION, SAID CHECK VALVE MEANS BEING THEREBY NORMALLY CLOSED AND OPERABLE TO OPEN POSITION BY A PRESSURE ON THE AIR AND VACUUM VALVE SIDE THEREOF GREATER THAN THE PRESSURE ON THE PIPELINE SIDE THEREOF, AND (B) MEANS DEFINING A PASSAGE OF RELATIVELY RESTRICTED CROSS-SECTION CONNECTED BETWEEN SAID AIR AND VACUUM VALVE AND SAID PIPELINE BY-PASSING SAID CHECK VALVE MEANS.
Claim 2
Dependent Claim
177 words
IN THE COMBINATION OF A PIPELINE AND AN AIR AND VACUUM VALVE CONNECTED TO SAID PIPELINE, THE IMPROVEMENT WHICH INCLUDES (A) CHECK VALVE MEANS CONNECTED BETWEEN SAID AIR AND VACUUM VALVE AND SAID PIPELINE, SAID CHECK VALVE MEANS INCLUDING (I) MEANS DEFINING AN APERTURE POSITIONED BETWEEN SAID AIR AND VACUUM VALVE AND SAID PIPELINE, (II) MEANS AT SAID APERTURE DEFINING A VALVE SEAT, (III) A VALVE ELEMENT POSITIONED ON THE SIDE OF SAID VALVE SEAT ON THE PIPELINE SIDE THEREOF AND MOVABLE BETWEEN AN OPEN POSITION REMOTE FROM SAID VALVE SEAT AND A CLOSED POSITION COOPERATING WITH SAID VALVE SEAT, AND (IV) RESILIENT MEANS NORMALLY BIASING SAID VALVE ELEMENT AWAY FROM SAID OPEN POSITION SUBSTANTIALLY TO SAID CLOSED POSITION, SAID CHECK VALVE MEANS BEING THEREBY NORMALLY CLOSED AND OPERABLE TO OPEN POSITION BY A PRESSURE ON THE AIR AND VACUUM VALVE SIDE THEREOF GREATER THAN THE PRESSURE ON THE PIPELINE SIDE THEREOF, AND (B) MEANS DEFINING A PASSAGE OF RELATIVELY RESTRICTED CROSS-SECTION CONNECTED BETWEEN SAID AIR AND VACUUM VALVE AND SAID PIPELINE BY-PASSING SAID CHECK VALVE MEANS.
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) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |