US3286732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control damper
Assignee: ENTELCO Corp A OHIO CORP
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Filing: 1963-02-04
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Granted: 1966-11-22
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Expires: 1983-02-04
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Alley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:05
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/15; F16; F16K; F16K1/00; F16K1/16; F16K1/165; F24F11/00; F24F11/70; F24F11/72; F24F11/74; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/8741; Y10T137/87442; Y10T137/87467; Y10T137/87483
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A FLOW CONTROL DAMPER INCLUDING FRAME MEMBERS, A PLURALITY OF DAMPER BLADES ROTATABLY SUPPORTED BY TWO OPPOSED FRAME MEMBERS, MEANS FOR ROTATING SAID BLADES BETWEEN OPEN AND CLOSED POSITIONS WITH BOTH EDGES OF EACH OF SAID BLADES DEFINING ARCUATE PATHS, SAID BLADES BEING PIVOTED ABOUT AXIS INTERMEDIATE THE LONGITUDINAL EDGES OF THE BLADES, A PLURALITY OF CURVED BAFFLES ECTENDING BETWEEN THE OPPOSED FRAME MEMBERS, SAID BAFLES BEING LOCATED ADJACENT THE ARCUATE PATHS OF SAID BLADES WITH AT LEAST PORTIONS OF THE BAFFLES BEING LATERALLY SPACED FROM PORTIONS OF SAID PATHS, AND MEANS FOR CONTROLLING THE BLADE ROTATING MEANS IN RESPONSE TO A CHARACTERISTIC OF FLUID FLOWING THROUGH SAID DAMPER TO MAINTAIN SAID CHARACTERISTIC CONSTANT.
Claim 2
Dependent Claim
114 words
A FLOW CONTROL DAMPER INCLUDING FRAME MEMBERS, A PLURALITY OF DAMPER BLADES ROTATABLY SUPPORTED BY TWO OPPOSED FRAME MEMBERS, MEANS FOR ROTATING SAID BLADES BETWEEN OPEN AND CLOSED POSITIONS WITH BOTH EDGES OF EACH OF SAID BLADES DEFINING ARCUATE PATHS, SAID BLADES BEING PIVOTED ABOUT AXIS INTERMEDIATE THE LONGITUDINAL EDGES OF THE BLADES, A PLURALITY OF CURVED BAFFLES ECTENDING BETWEEN THE OPPOSED FRAME MEMBERS, SAID BAFLES BEING LOCATED ADJACENT THE ARCUATE PATHS OF SAID BLADES WITH AT LEAST PORTIONS OF THE BAFFLES BEING LATERALLY SPACED FROM PORTIONS OF SAID PATHS, AND MEANS FOR CONTROLLING THE BLADE ROTATING MEANS IN RESPONSE TO A CHARACTERISTIC OF FLUID FLOWING THROUGH SAID DAMPER TO MAINTAIN SAID CHARACTERISTIC CONSTANT.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |