US3242943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control
Assignee: Buensod Stacey Corp
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Filing: 1964-10-20
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Granted: 1966-03-29
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Expires: 1984-10-20
Abstract
No abstract record available.
Inventors
- 👤 Robert W Waterfill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:37
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/75; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/785; Y10T137/7869; Y10T137/7875
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A FLOW CONTROL DEVICE, A DUCT; A DAMPER MOUNTED WITHIN SAID DUCT, AND ADAPTED TO OSCILLATE BETWEEN CLOSED AND OPEN POSITIONS; MEANS FOR PIVOTALLY MOUNTING SAID DAMPER WITHIN SAID DUCT IN A MANNER TO PROVIDE EFFECTIVE AREA PORTIONS ON EACH SIDE OF SAID PIVOTAL MOUNTING; A PLURALITY OF FLUID PASSAGE MEANS WITHIN ONE OF SAID AREA PORTIONS TO PROVIDE A DIFFERENTIAL EFFECTIVE AREA RESPONSIVE TO FLUID FLOWING PAST SAID DAMPER; AND MEANS FOR SUCCESSIVELY SEALING OFF SAID PASSAGE MEANS AS SAID DAMPER MOVES TOWARD ITS CLOSED POSITION.
Claim 2
Dependent Claim
88 words
IN A FLOW CONTROL DEVICE, A DUCT; A DAMPER MOUNTED WITHIN SAID DUCT, AND ADAPTED TO OSCILLATE BETWEEN CLOSED AND OPEN POSITIONS; MEANS FOR PIVOTALLY MOUNTING SAID DAMPER WITHIN SAID DUCT IN A MANNER TO PROVIDE EFFECTIVE AREA PORTIONS ON EACH SIDE OF SAID PIVOTAL MOUNTING; A PLURALITY OF FLUID PASSAGE MEANS WITHIN ONE OF SAID AREA PORTIONS TO PROVIDE A DIFFERENTIAL EFFECTIVE AREA RESPONSIVE TO FLUID FLOWING PAST SAID DAMPER; AND MEANS FOR SUCCESSIVELY SEALING OFF SAID PASSAGE MEANS AS SAID DAMPER MOVES TOWARD ITS CLOSED POSITION.
References Cited (Backward Citations)
US2101315A
Cited
US2358260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |