US4403481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination roof mounting curb and plenum
Assignee: Advanced Thermal Technologies Inc
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Filing: 1981-02-25
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Granted: 1983-09-13
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Expires: 2001-02-25
Abstract
Abstract A curb for a roof air conditioning package is enclosed on all sides and the bottom to form a plenum. The air conduits from and to the building are connected to the plenum rather than the unit. The plenum is reinforced by a wood collar around the top, which then serves as a second function of a roofing nailer strip. The curb is leveled by wedge supports.
Inventors
- 👤 Robert W. Yoho, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:14
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/20; Y; Y10; Y10S; Y10S62/00; Y10S62/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
A curb to support an air conditioner on the roof of a building and distribute conditioned air, comprising in combination: four upstanding exterior walls; the ends of said exterior walls being connected together in the form of a rectangular box; the bottom edges of said exterior walls being connected together with sheet material whereby an open-top rectangular box is formed; an upstanding interior wall; the ends of said interior wall being connected to the insides of different exterior walls whereby a plenum is formed; and the bottom of said plenum being of sufficient size to accept a plurality of air conditioning supply ducts connected thereto at any desired location therewithin.
Claim 2
Dependent Claim
110 words
A curb to support an air conditioner on the roof of a building and distribute conditioned air, comprising in combination: four upstanding exterior walls; the ends of said exterior walls being connected together in the form of a rectangular box; the bottom edges of said exterior walls being connected together with sheet material whereby an open-top rectangular box is formed; an upstanding interior wall; the ends of said interior wall being connected to the insides of different exterior walls whereby a plenum is formed; and the bottom of said plenum being of sufficient size to accept a plurality of air conditioning supply ducts connected thereto at any desired location therewithin.
Claim 3
Dependent Claim
32 words
An apparatus as set forth in claim 1, wherein said plenum accepts chilled air from the air conditioner; and said plenum distributes chilled air to said air conditioning supply ducts connected thereto.
Claim 4
Dependent Claim
21 words
An apparatus as set forth in claim 2, wherein the inside surfaces of the walls forming the plenum are thermally insulated.
Claim 5
Dependent Claim
72 words
An apparatus as set forth in claim 1, wherein a nailer strip is attached to the periphery of said exterior walls: said nailer strip being composed of a material that will accept nails; said nailer strip being attached to the top edge of said exterior walls; and said nailer strip enabling roofing felts to be nailed thereto whereby a weatherproof seal is formed between the curb and the remainder of the roof.
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) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |