US3882843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cleaning wall oven with air flow system
Assignee: Westinghouse Electric Corp
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Filing: 1974-06-24
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Granted: 1975-05-13
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Expires: 1994-06-24
Abstract
Abstract A wall oven assembly of the pyrolytic self-cleaning type is provided with a forced air flow system in which air is drawn in through a perimetric gap between the front frame of the assembly and the wall cabinet along at least the opposite sides and the top of the assembly, as well as being drawn in through an intermediate passage between an upper control chamber and a lower oven cavity structure, and the air so drawn in is then forced by a fan at the rear of the oven assembly back into the room through opposite side passages and through the control chamber having an outlet along its front top edge.
Inventors
- 👤 Eugene J Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:49
CPC Classifications
F; F24; F24C; F24C14/00; F24C14/02; F24C15/00; F24C15/006; F24C15/20; F24C15/2007
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
291 words
An oven assembly of the pyrolytic self-cleaning type for wall installation in a cabinet having an opening sufficiently large that a perimetric air inlet is defined between the boundaries of said opening and at least the top and opposite sides of the oven assembly, comprising: outer housing means including top, bottom, rear and opposite side walls; a thermally-insulated oven liner having an open front disposed in said housing and presenting top, bottom, rear and opposite side outer faces, the rear and opposite side outer faces being spaced inwardly from the respectively facing walls of said outer housing to define air flow passages therebetween; a control chamber in the top part of said outer housing and having a top front air outlet, the bottom of said control chamber defining an intermediate passage with the top outer face of said oven liner, said intermediate passage having an air inlet opening at its front and an air outlet opening to the space behind said housing rear wall at its rear; duct means connecting said air flow passage at the rear of said liner to the interior of said control chamber; and fan means in the air flow passage at the rear of said oven liner and having a suction side in communication with the space to the rear of said rear housing wall for drawing air through said perimetric air inlet and past the exterior of said top and opposite side walls of said housing, and through said intermediate passage, and forCing air from the discharge side of said fan means through said air flow passage at the rear of said oven liner, through said control chamber, and through said air flow passages at the opposite sides of said liner from rear to front.
Claim 2
Dependent Claim
291 words
An oven assembly of the pyrolytic self-cleaning type for wall installation in a cabinet having an opening sufficiently large that a perimetric air inlet is defined between the boundaries of said opening and at least the top and opposite sides of the oven assembly, comprising: outer housing means including top, bottom, rear and opposite side walls; a thermally-insulated oven liner having an open front disposed in said housing and presenting top, bottom, rear and opposite side outer faces, the rear and opposite side outer faces being spaced inwardly from the respectively facing walls of said outer housing to define air flow passages therebetween; a control chamber in the top part of said outer housing and having a top front air outlet, the bottom of said control chamber defining an intermediate passage with the top outer face of said oven liner, said intermediate passage having an air inlet opening at its front and an air outlet opening to the space behind said housing rear wall at its rear; duct means connecting said air flow passage at the rear of said liner to the interior of said control chamber; and fan means in the air flow passage at the rear of said oven liner and having a suction side in communication with the space to the rear of said rear housing wall for drawing air through said perimetric air inlet and past the exterior of said top and opposite side walls of said housing, and through said intermediate passage, and forCing air from the discharge side of said fan means through said air flow passage at the rear of said oven liner, through said control chamber, and through said air flow passages at the opposite sides of said liner from rear to front.
Claim 3
Dependent Claim
31 words
An oven assembly according to claim 1 including: air passage means at the bottom of said oven assembly in communication with the space to the rear of said rear housing wall.
Claim 4
Dependent Claim
30 words
An oven assembly according to claim 1 including: means associated with said top front air outlet of said control chamber for deflecting air exiting therefrom in a partly upwardly direction.
Claim 5
Dependent Claim
260 words
A wall oven assembly of the pyrolytic self-cleaning type adapted to be installed in a cabinet in a room, comprising: an outer housing; a control chamber in the upper part of said housing; a thermally-insulated oven cavity defining structure in said housing; an intermediate air flow passage defined between said control chamber and said oven cavity defining structure, said intermediate passage having an inlet opening at the front and an outlet opening at the rear; air inlet means defined at the top and sides of said housing with said cabinet; fan means located at the rear of said oven assembly and having a suction side and a pressure side, said pressure side being in communication with a space at the rear of said oven cavity defining structure; side air flow passages defined at both sides of said oven assembly between the outer sides of said oven cavity defining structure and respectively facing inner faces of said outer housing, and in communication with the pressure side of said fan means; means placing said space at the rear of said oven cavity defining structure in communication with the interior of said control chamber; said fan means being operable to draw air through said air inlet means and past the outer faces of said outer housing to the suction side of said fan means, and also draw air through said intermediate passage from front to rear, and for forcing air back into said room through said side air passages and through said control chamber having an outlet at its upper front edge portion.
Claim 6
Dependent Claim
260 words
A wall oven assembly of the pyrolytic self-cleaning type adapted to be installed in a cabinet in a room, comprising: an outer housing; a control chamber in the upper part of said housing; a thermally-insulated oven cavity defining structure in said housing; an intermediate air flow passage defined between said control chamber and said oven cavity defining structure, said intermediate passage having an inlet opening at the front and an outlet opening at the rear; air inlet means defined at the top and sides of said housing with said cabinet; fan means located at the rear of said oven assembly and having a suction side and a pressure side, said pressure side being in communication with a space at the rear of said oven cavity defining structure; side air flow passages defined at both sides of said oven assembly between the outer sides of said oven cavity defining structure and respectively facing inner faces of said outer housing, and in communication with the pressure side of said fan means; means placing said space at the rear of said oven cavity defining structure in communication with the interior of said control chamber; said fan means being operable to draw air through said air inlet means and past the outer faces of said outer housing to the suction side of said fan means, and also draw air through said intermediate passage from front to rear, and for forcing air back into said room through said side air passages and through said control chamber having an outlet at its upper front edge portion.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |