US3559560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling boxes for distributing air
Assignee: TEXFAN Inc
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Filing: 1968-11-07
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Granted: 1971-02-02
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Expires: 1988-11-07
Abstract
Abstract The invention is directed to ceiling boxes used to distribute air down through the ceiling of a room from a suitable furnace or cooler. The improved box is of rectangular form and is so constructed that it may be installed between the ceiling joists in a position with its length extending either parallel with or transversely of said joists, as desired. To achieve this the box is adapted to be supported on one joist only, and is secured to this joist by means of fastening devices passing through either an end wall or a sidewall of the box. The open lower side of the box is covered by a suitable grille through which the air is discharged.
Inventors
- 👤 William R Trahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:28
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/082; F24F13/02; F24F13/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
150 words
Means for distributing air from a desired source into a room through an opening in the ceiling, said means comprising a rectangular sheet metal ceiling box having side and end walls and a top wall, said top wall having an opening, means for delivering air from the source into said box through the opening in the top wall, both the width and length of said box being less than the distance between the usual ceiling joists, means for supporting said box on one joist only, including means for selectively securing either an end or a side wall to said joist, and a grille covering the opening in the ceiling, said side and end walls being formed at their lower Edges adjacent a ceiling panel with horizontal extensions together constituting an inwardly projecting flange, said flange being for connecting the ceiling panel to the grille thus providing support for the grille.
Claim 2
Dependent Claim
150 words
Means for distributing air from a desired source into a room through an opening in the ceiling, said means comprising a rectangular sheet metal ceiling box having side and end walls and a top wall, said top wall having an opening, means for delivering air from the source into said box through the opening in the top wall, both the width and length of said box being less than the distance between the usual ceiling joists, means for supporting said box on one joist only, including means for selectively securing either an end or a side wall to said joist, and a grille covering the opening in the ceiling, said side and end walls being formed at their lower Edges adjacent a ceiling panel with horizontal extensions together constituting an inwardly projecting flange, said flange being for connecting the ceiling panel to the grille thus providing support for the grille.
Claim 3
Dependent Claim
86 words
A ceiling box in accordance with claim 1 in which a narrow flange extends downwardly from the inner flange, below the bottom of the joist, thus defining the ceiling openings, said vertical, narrow flange being of approximately the same width as the thickness of the conventional sheet material usually employed for the ceiling panel, the edge of such sheet material abutting said narrow vertical flange, and being squeezed between the grille and said inwardly projecting horizontal flange, and sheet metal screws passing through such ceiling material.
Claim 4
Dependent Claim
49 words
A ceiling box in accordance with claim 1 in which the edge of the sheet material conventionally used for ceiling panel is interposed and squeezed between the grille and said horizontal, inwardly projecting flange, and sheet metal screws passing through said grille the ceiling material, and into said flange.
References Cited (Backward Citations)
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |