US3762301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air distribution apparatus
Assignee: Haden Drysys International Ltd
•
Filing: 1972-05-03
•
Granted: 1973-10-02
•
Expires: 1992-05-03
Abstract
Abstract An air distribution duct has an elongated opening extending along the duct through which air may pass from the duct to an enclosure, together with a plurality of restriction members providing restricted air passages for controlling air flow from the duct to the opening, each having an inner edge located within the duct and the opposite outer edge located adjacent to and substantially parallel with the elongated opening, each restriction member being tiltable between a first position in which the said outer edge is positioned adjacent one side of the elongated opening and the restriction member extends across the path between the interior of the duct and the said opening, and a second position in which the said outer edge is positioned adjacent the other side of the elongated opening thereby providing unobstructed passage between the interior of the duct and the said opening.
Inventors
- 👤 D Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:29
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/072; F24F13/08; F24F13/082
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
166 words
Air distributing apparatus for delivering air to an enclosure, which apparatus comprises an air distribution duct having an elongated opening extending along at least part of the length of the duct through which air may pass from the duct to the enclosure, a plurality of restriction members extending across the duct and providing restricted air passages for controlling air flow from the duct to the opening each having an inner edge located within the duct and the opposite outer edge located adjacent to and substantially parallel with the elongated opening, each restriction member being tiltable between a first position in which the said outer edge is positioned adjacent one side of the elongated opening and the restriction member extends across the path between the interior of the duct and the said opening, and a second position in which the said outer edge is positioned adjacent the other side of the elongated opening thereby providing unobstructed passage between the interior of the duct and the said opening.
Claim 2
Dependent Claim
166 words
Air distributing apparatus for delivering air to an enclosure, which apparatus comprises an air distribution duct having an elongated opening extending along at least part of the length of the duct through which air may pass from the duct to the enclosure, a plurality of restriction members extending across the duct and providing restricted air passages for controlling air flow from the duct to the opening each having an inner edge located within the duct and the opposite outer edge located adjacent to and substantially parallel with the elongated opening, each restriction member being tiltable between a first position in which the said outer edge is positioned adjacent one side of the elongated opening and the restriction member extends across the path between the interior of the duct and the said opening, and a second position in which the said outer edge is positioned adjacent the other side of the elongated opening thereby providing unobstructed passage between the interior of the duct and the said opening.
Claim 3
Dependent Claim
27 words
Air distributing apparatus as claimed in claim 1 in which the or each restriction member comprises a plate provided with a plurality of apertures passing through it.
Claim 4
Dependent Claim
46 words
Air distributing apparatus as claimed in claim 1 in which a plurality of restriction members are arranged side by side along the duct, each restriction member including a solid plate spaced from adjacent restriction members so as to provide restricted air passages between adjacent restriction members.
Claim 5
Dependent Claim
18 words
Air distributing apparatus as claimed in claim 3 in which each restriction member comprises an elongated channel member.
Claim 6
Dependent Claim
28 words
Air distributing apparatus as claimed in claim 1 in which each restriction member is removable from the duct through the said opening, when in the said second position.
Claim 7
Dependent Claim
17 words
Air distributing apparatus as claimed in claim 1 in which each restriction member is rectangular in shape.
Claim 8
Dependent Claim
59 words
Air distributing apparatus as claimed in claim 1 in which the duct has a flat bottom wall with the said elongated opening extending along the lower part of one side wall of the duct, each restriction member having the said inner edge supported on the bottom wall of the duct with the opposite outer edge projecting into the opening.
Claim 9
Dependent Claim
16 words
Air distributing apparatus as claimed in claim 7 in which the duct is of rectangular cross-section.
Claim 10
Dependent Claim
43 words
Air distributing apparatus as claimed in claim 8 in which the inner edge of the or each restricting member rests against the corner of the duct formed by the bOttom wall and the side wall opposite to the side with the elongated opening.
Claim 11
Dependent Claim
51 words
Air distributing apparatus as claimed in claim 9 in which the or each restriction member lies flat against the bottom wall in the second position and is provided with a releasable support means to hold the outer edge against the top of the elongated opening when in the said first position.
Claim 12
Dependent Claim
33 words
Air distributing apparatus as claimed in claim 10 in which the releasable support means comprises a wedge member for insertion between the bottom wall of the duct and the or each restriction member.
Claim 13
Dependent Claim
46 words
Air distributing apparatus as claimed in claim 1 in which the duct is provided with guide plates extending outwardly from the elongated opening, one guide plate extending along each side of the opening, and each restriction member is removable through the gap between the guide plates.
Claim 14
Dependent Claim
45 words
Air distributing apparatus as claimed in claim 12 in which each restriction member is located with its outer edge secured to the top guide plate by a releasable support, the duct airway thereby including the space between each restriction member and the top guide plate.
Claim 15
Dependent Claim
42 words
Air distributing apparatus as claimed in claim 2 in which each restriction member comprises an apertured plate provided with an array of perforations which pass through the plate and have a cross-section which is small compared with the thickness of the plate.
References Cited (Backward Citations)
US3392657A
Cited
US3601033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |