US3858568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oven vent hood
Assignee: Raytheon Co
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Filing: 1973-12-12
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Granted: 1975-01-07
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Expires: 1993-12-12
Abstract
Abstract A hood for use with a baking oven or the like having an exhaust vent in its upper surface which communicates with an interior of the hood, the hood having a faceplate, an upper vent above the faceplate and a lower vent below the faceplate, the oven flue products being enabled to enter the hood and mix with cool air which is drawn into the hood through the lower vent before passing out through the upper vent or through an exhaust fan.
Inventors
- 👤 Harry W Seidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:08
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20; F24C15/2007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
The combination of an oven, an exhaust hood positioned on top of said oven, and including a housing having parallel transversely extending top and bottom walls and a movable faceplate spanning the space between adjacent ends of said top and bottom walls, a vent in the top of the oven, a lower vent in the bottom wall of the hood behind said faceplate communicating with said oven vent, and an exhaust vent in the top wall of said hood behind and adjacent the faceplate whereby hot air from the oven will rise through the hood behind the faceplate and will exit through said exhaust vent, when said faceplate is closed, without contacting the outer surface of the faceplate.
Claim 2
Dependent Claim
118 words
The combination of an oven, an exhaust hood positioned on top of said oven, and including a housing having parallel transversely extending top and bottom walls and a movable faceplate spanning the space between adjacent ends of said top and bottom walls, a vent in the top of the oven, a lower vent in the bottom wall of the hood behind said faceplate communicating with said oven vent, and an exhaust vent in the top wall of said hood behind and adjacent the faceplate whereby hot air from the oven will rise through the hood behind the faceplate and will exit through said exhaust vent, when said faceplate is closed, without contacting the outer surface of the faceplate.
Claim 3
Dependent Claim
87 words
An exhaust hood comprising a housing having top and bottom walls, side walls and back wall, a movable faceplate in the front of the housing, a lower vent in the bottom wall rearwardly of the faceplate, and an exhaust vent in said top wall behind and adjacent said faceplate whereby hot air entering the housing through the lower vent will rise through the housing behind the faceplate and flow out through said exhaust vent, when the faceplate is closed, without contacting the outer surface of the faceplate.
Claim 4
Dependent Claim
87 words
An exhaust hood comprising a housing having top and bottom walls, side walls and back wall, a movable faceplate in the front of the housing, a lower vent in the bottom wall rearwardly of the faceplate, and an exhaust vent in said top wall behind and adjacent said faceplate whereby hot air entering the housing through the lower vent will rise through the housing behind the faceplate and flow out through said exhaust vent, when the faceplate is closed, without contacting the outer surface of the faceplate.
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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |