US3750839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air distribution apparatus
Assignee: Trane US Inc
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Filing: 1971-11-01
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Granted: 1973-08-07
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Expires: 1991-11-01
Abstract
Abstract Apparatus for controlling and distributing the flow of air to one or more zones. The apparatus includes a sound-dampening baffle to aid in delivering air with a minimum of perceptible noise.
Inventors
- 👤 J Mcnabney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:02
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/072; F24F13/24
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
111 words
An air distribution apparatus for providing conditioned air to at least one space, said apparatus comprising: an air receiving portion having an air inlet and a plurality of air outlets; damper means disposed in said air receiving portion to vary the volume of air passing through said portion; a first perforated baffle disposed between said air inlet and said damper means; a second perforated baffle disposed between said damper means and said air outlets; and a plurality of air diffuser portions each in fluid communication with one of said air outlets, said diffuser portions including slot means for discharging air therefrom in a flow generally along the ceiling of said space.
Claim 2
Dependent Claim
111 words
An air distribution apparatus for providing conditioned air to at least one space, said apparatus comprising: an air receiving portion having an air inlet and a plurality of air outlets; damper means disposed in said air receiving portion to vary the volume of air passing through said portion; a first perforated baffle disposed between said air inlet and said damper means; a second perforated baffle disposed between said damper means and said air outlets; and a plurality of air diffuser portions each in fluid communication with one of said air outlets, said diffuser portions including slot means for discharging air therefrom in a flow generally along the ceiling of said space.
Claim 3
Dependent Claim
46 words
The apparatus of claim 1 wherein said air receiving portion includes top and bottom walls, and wherein said second baffle slants downwardly and rearwardly from said top wall, thereafter extends substantially horizontally and rearwardly, and thereafter extends substantially vertically downwardly into contact with said bottom wall.
Claim 4
Dependent Claim
55 words
The apparatus of claim 1 wherein said second baffle includes a slanted portion, said slanted portion disposed at an angle measured from the horizontal which is from about 0* to about 20* less than the angle at which said damper means is disposed from the horizontal when said damper means is in the closed position.
Claim 5
Dependent Claim
27 words
The apparatus of claim 3 wHerein said angle of said slanted portion is about 15* less than said angle of said damper means in the closed position.
Claim 6
Dependent Claim
41 words
The apparatus of claim 1 wherein said air receiving portion includes top and bottom walls; and wherein said second baffle slants downwardly and rearwardly from said top wall and thereafter smoothly curves downwardly and forwardly into contact with said bottom wall.
Claim 7
Dependent Claim
40 words
The apparatus of claim 1 wherein said air receiving portion includes top and bottom walls, and wherein said second baffle slants downwardly and rearwardly from said top wall and thereafter extends substantially vertically downwardly into contact with said bottom wall.
Claim 8
Dependent Claim
61 words
The apparatus of claim 1 wherein said air receiving portion includes top and bottom walls, and wherein said second baffle extends substantially vertically downwardly from said top wall to a point about midway between said top and bottom walls, thereafter extends substantially horizontally and forwardly toward said damper means, and thereafter slants downwardly and forwardly into contact with said bottom wall.
Claim 9
Dependent Claim
36 words
The apparatus of claim 1 wherein said first perforated baffle comprises a substantially V-shaped perforated plate between said damper means and said air inlet, said first baffle extending substantially across the area of said air inlet.
Claim 10
Dependent Claim
35 words
The apparatus of claim 1 wherein said slot means includes a semi-octagonal side and an L-shaped side facing said semi-octagonal side, whereby air passing through said slot means flows along the ceiling of said space.
Claim 11
Dependent Claim
59 words
The apparatus of claim 1 wherein said slot means includes two spaced apart semi-octagonal sides and an inverted U-shaped member disposed between said semi-octagonal sides, said U-shaped member having horizontal projections at each tip thereof facing toward a respective semi-octagonal side, whereby air passing through said slot flows along the ceiling of said space in two oppositely directed streams.
Claim 12
Dependent Claim
31 words
The apparatus of claim 1 wherein each of said diffuser portions includes a third perforated baffle disposed in the fluid passageways between said air outlets and each of said diffuser portions.
Claim 13
Dependent Claim
71 words
The apparatus of claim 1, said second perforated baffle including a slanted portion, a horizontal portion, and a vertical portion, and said damper means including a rotatable damper blade, wherein said slanted portion is disposed at an angle measured from the horizontal which is about 0* to 20* less than the angle at which said damper blade is disposed from the horizontal when said damper blade is in the closed position.
Claim 14
Dependent Claim
27 words
The apparatus of claim 12 wherein said angle of said slanted portion is about 15* less than said angle of said damper blade in the closed position.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |