US3590218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall mounted heater
Assignee: Emerson Electric Co
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Filing: 1970-01-02
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Granted: 1971-06-29
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Expires: 1990-01-02
Abstract
Abstract A forced air electric space heater construction permitting convenient entry and mounting thereof within a wall, or the removal therefrom, through a rectangular wall opening of considerable smaller vertical dimension than that of the heater. A one-piece rectangular open mounting frame having deep top and sidewalls and a relatively shallow bottom wall is inserted into a hollow wall structure through a rectangular opening therein. A casing of considerably greater height but sufficiently less width and depth than the frame opening, whereby entry of the casing into the frame while in tilted position is permitted, houses electric heating elements, a blower and duct means having an air inlet and an air outlet in horizontal spaced relationship in the upper portion of the casing front wall. The casing and frame are provided with cooperable pivot means which engage and disengage, respectively, as the casing is entered into or withdrawn from the frame while in tilted position. Releasable latch means are provided to hold the casing in vertical position in the casing. A removable grille covers the wall opening.
Inventors
- 👤 Robert E Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:03
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405; F24H3/0411
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
209 words
A forced air, in-the-wall type, electric heater comprising a rectangular mounting frame having top, side, and bottom walls adapted to frame a wall opening, said top and sidewalls being deep for extension into a wall space, but said bottom wall being shallow and having only sufficient depth to extend through wall structure defining a wall opening, and a casing of general rectangular form entered into said frame, said casing having top, side, front, rear, and bottom walls and housing electric heating elements, a blower, and duct means, and having an inlet and an outlet in horizontal spaced relationship in the upper portion of the front wall thereof, said casing having considerably greater height but sufficiently less width and depth than said frame to permit the entry of said casing into said frame while in tilted position, means pivotally mounting said casing on a horizontal axis in the sidewalls of said frame comprising surfaces which engage and disengage, respectively, as said casing is entered into or withdrawn from said frame while in tilted position, means on at least one of said frame walls limiting rotation of said casing in said frame in one direction to a vertical position, and means latching said casing in a vertical position in said frame.
Claim 2
Dependent Claim
209 words
A forced air, in-the-wall type, electric heater comprising a rectangular mounting frame having top, side, and bottom walls adapted to frame a wall opening, said top and sidewalls being deep for extension into a wall space, but said bottom wall being shallow and having only sufficient depth to extend through wall structure defining a wall opening, and a casing of general rectangular form entered into said frame, said casing having top, side, front, rear, and bottom walls and housing electric heating elements, a blower, and duct means, and having an inlet and an outlet in horizontal spaced relationship in the upper portion of the front wall thereof, said casing having considerably greater height but sufficiently less width and depth than said frame to permit the entry of said casing into said frame while in tilted position, means pivotally mounting said casing on a horizontal axis in the sidewalls of said frame comprising surfaces which engage and disengage, respectively, as said casing is entered into or withdrawn from said frame while in tilted position, means on at least one of said frame walls limiting rotation of said casing in said frame in one direction to a vertical position, and means latching said casing in a vertical position in said frame.
Claim 3
Dependent Claim
71 words
A heater as claimed in claim 1 in which said latching means is applied to the said top walls of said mounting frame and said casing and comprises a manually disengageable spring latch attached to one of said top walls and latch keeper means on the other of said top walls which enter into latching engagement as said casing is swung from a tilted to a vertical position in said frame.
Claim 4
Dependent Claim
67 words
A heater as claimed in claim 1 in which the front wall of said casing extends beyond the sidewalls thereof and in which said means pivotally mounting said casing in said frame comprises partially detached and inwardly formed portions of the sidewalls of said mounting frame entered into vertically elongated slots in those side portions of the front wall of said casing extending beyond the sidewalls thereof.
Claim 5
Dependent Claim
181 words
A heater as claimed in claim 1 in which said mounting frame has a front wall extending downward from the rear edge of said shallow bottom wall thereof, and shallow lower sidewalls coextending with said front wall, and a second shallow bottom wall extending across the lower edge of said front wall; in which said inlet in said front wall of said casing extends downward below said bottom wall of said frame; and in which said casing is mounted in said frame with said front wall thereof spaced rearwardly from said front wall of said mounting frame but within the extent of the depth of said lower shallow sidewalls and second shallow bottom wall of said mounting frame, and the depth of said top and sidewalls of said mounting frame and of said lower shallow sidewalls and second shallow bottom wall thereof being such that said mounting frame may be entered in a tilted position into a wall space through a wall opening having the width of said frame but having considerably less height than the overall height of said frame.
Claim 6
Dependent Claim
39 words
A heater as claimed in claim 1 in which the rear top and bottom edges of said casing are beveled to provide additional clearance for the tilted insertion of said casing into a wall space having a limited depth.
Claim 7
Dependent Claim
49 words
A heater as claimed in claim 1 in which said blower is of the centrifugal type, and in which said duct means includes a scroll embracing said blower and directing air over said heating elements, and in which said scroll forms, in substantial part, the sidewalls of said casing.
Claim 8
Dependent Claim
35 words
A heater as claimed in claim 6 which includes a short duct surrounding said outlet in said front wall of said casing and extending forward substantially to the front edges of said mounting frame walls.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |