Patent US3635245A successfully refreshed from Google Patents.
US3635245A
Expired / Lapsed
US
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Air control device
Assignee: JOHN L CANFIELD
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Filing: 1969-10-06
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Granted: 1972-01-18
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Expires: 1989-10-06
Abstract
Abstract A damper control for an air-conditioning system including opposed walls defined by concentric, cylindrical segments divided transversely into three passageways in each of which is a vane, the vanes being on a shaft concentric with the opposed walls, the vanes also being angularly displaced relative to each other so that, when each vane is positioned intermediate the walls so as to open its passageway, the other two vanes engage the opposed walls to close their passageways, with a heating unit being positioned adjacent one of the passageways to heat the air flowing through it, and a cooling unit being positioned adjacent another of the passageways for cooling the air flowing through that passageway.
Inventors
- 👤 John L Canfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:49
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/1406; F24F13/1413; F24F3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/8741; Y10T137/87442; Y10T137/87523; Y10T137/87531; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
176 words
A damper assembly comprising a duality of opposed spaced walls, said walls being defined by coaxial cylindrical segments, transverse walls extending between said opposed walls to define a plurality of passageways between said opposed walls, each of said vanes being dimensioned to fit diametrically between said opposed walls and having outer edges in juxtaposition with said opposed walls when said vane is so fitted between said opposed walls, and means for rotating said vanes about an axis, said axis of rotation being coincident with the axis of said opposed walls, said vanes being angularly displaced from each other so that when said outer edges of one of said vanes are in juxtaposition with said opposed walls said outer edges of a second of said vanes are remote from said opposed walls, each of said vanes when so fitted diametrically between said opposed walls substantially precluding flow of fluid through the passageway in which it is located at all rotational positions of said vane in which said outer edges thereof are in juxtaposition with said opposed walls,
Claim 2
Dependent Claim
176 words
A damper assembly comprising a duality of opposed spaced walls, said walls being defined by coaxial cylindrical segments, transverse walls extending between said opposed walls to define a plurality of passageways between said opposed walls, each of said vanes being dimensioned to fit diametrically between said opposed walls and having outer edges in juxtaposition with said opposed walls when said vane is so fitted between said opposed walls, and means for rotating said vanes about an axis, said axis of rotation being coincident with the axis of said opposed walls, said vanes being angularly displaced from each other so that when said outer edges of one of said vanes are in juxtaposition with said opposed walls said outer edges of a second of said vanes are remote from said opposed walls, each of said vanes when so fitted diametrically between said opposed walls substantially precluding flow of fluid through the passageway in which it is located at all rotational positions of said vane in which said outer edges thereof are in juxtaposition with said opposed walls,
Claim 3
Dependent Claim
76 words
A device as recited in claim 1 including in addition whereby said one vane obstructs the flow of fluid through the passageway in which it is located while said second vane allows the flow of fluid through the passageway in which it is located. a shaft coaxial with said opposed walls, said vanes being mounted on said shaft, whereby upon rotation of said shaft said vanes are so rotated about said axis of said opposed walls.
Claim 4
Dependent Claim
17 words
A deVice as recited in claim 1 in which said vanes are of substantially flat rectangular configuration.
Claim 5
Dependent Claim
39 words
A device as recited in claim 1 including in addition sealing means on said outer edges of said vanes, said sealing means being engageable with said opposed walls when said outer edges are in juxtaposition with said opposed walls.
Claim 6
Dependent Claim
65 words
A device as recited in claim 1 including in addition sealing means on said outer edges of said vanes for engaging said opposed walls when said outer edges are so in juxtaposition with said opposed walls, said vanes having additional opposite edges adjacent said transverse walls, and including further sealing means on said additional opposite edges engaging said transverse walls for effecting a seal therewith.
References Cited (Backward Citations)
US2923523A
Cited
US3363534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |