Patent US3119320A successfully refreshed from Google Patents.
US3119320A
Expired / Lapsed
US
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Air damper
Assignee: Madison Management Group Inc
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Filing: 1961-04-24
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Granted: 1964-01-28
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Expires: 1981-04-24
Abstract
No abstract record available.
Inventors
- 👤 William L Batchelor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:20
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F13/02; F24F13/06; F24F13/068; F24F13/078; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A DAMPER FOR USE IN AN AIR DISTRIBUTION SYSTEM, COMPRISING; A HOUSING HAVING AN INLET OPENING ADAPTED FOR FLUID CONNECTION WITH THE AIR DISTRIBUTION SYSTEM, AN OUTLET OPENING AND AN AIR PASSAGE THEREBETWEEN, A FLEXIBLE DAMPER CURTAIN, SUPPORT MEANS FIXED TO THE HOUSING SUPPORTING THE DAMPER CURTAIN FOR RECTILINEAR MOVEMENT ACROSS THE AIR PASSAGE TO RESTRICT THE FLOW OF AIR THERETHROUGH, SAID CURTAIN BEING ADAPTED TO MOVE IN OPPOSITE RECTILINEAR DIRECTIONS FOR INCREASING OR DECREASING THE AIR FLOW IN THE HOUSING OUTLET, RESILIENT MEANS CONNECTED TO ONE EDGE OF THE CURTAIN BIASING THE CURTAIN IN ONE OF SAID OPPOSITE DIRECTIONS TO MAINTAIN THE CURTAIN TAUT AND BIASING THE CURTAIN AGAINST SAID SUPPORT MEANS, AND MANUALLY OPERABLE MEANS CONNECTED TO THE CURTAIN AND ADAPTED TO MOVE IT IN THE OTHER OF SAID OPPOSITE DIRECTIONS.
Claim 2
Dependent Claim
133 words
A DAMPER FOR USE IN AN AIR DISTRIBUTION SYSTEM, COMPRISING; A HOUSING HAVING AN INLET OPENING ADAPTED FOR FLUID CONNECTION WITH THE AIR DISTRIBUTION SYSTEM, AN OUTLET OPENING AND AN AIR PASSAGE THEREBETWEEN, A FLEXIBLE DAMPER CURTAIN, SUPPORT MEANS FIXED TO THE HOUSING SUPPORTING THE DAMPER CURTAIN FOR RECTILINEAR MOVEMENT ACROSS THE AIR PASSAGE TO RESTRICT THE FLOW OF AIR THERETHROUGH, SAID CURTAIN BEING ADAPTED TO MOVE IN OPPOSITE RECTILINEAR DIRECTIONS FOR INCREASING OR DECREASING THE AIR FLOW IN THE HOUSING OUTLET, RESILIENT MEANS CONNECTED TO ONE EDGE OF THE CURTAIN BIASING THE CURTAIN IN ONE OF SAID OPPOSITE DIRECTIONS TO MAINTAIN THE CURTAIN TAUT AND BIASING THE CURTAIN AGAINST SAID SUPPORT MEANS, AND MANUALLY OPERABLE MEANS CONNECTED TO THE CURTAIN AND ADAPTED TO MOVE IT IN THE OTHER OF SAID OPPOSITE DIRECTIONS.
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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |