US3590803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food-treatment apparatus with gas-circulating means
Assignee: Burger Eisenwerke AG
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Filing: 1969-06-26
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Granted: 1971-07-06
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Expires: 1989-06-26
Abstract
Abstract A food-treatment apparatus-an oven-has a housing in which a food-treatment chamber is enclosed along with an axial-input radial-output blower for circulating air in the housing through the chamber. Heat is drawn from an external gas burner through a conduit which opens in the housing adjacent the axial input of the blower. Slightly upstream of this conduit (in the recirculation path) is an exhaust conduit of variable crosssectional area out through which heated air can flow. The foodtreatment chamber is downstream of the mouth of the heat-input conduit and upstream of the exhaust conduit.
Inventors
- 👤 Paul Sauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:06
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/32; F24C15/322
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
184 words
A food-treatment apparatus comprising: a housing defining in a portion thereof, a food-treatment chamber and a further chamber alongside said food-treatment chamber; means in said food-treatment chamber for supporting food to be treated; air-circulating means in said housing for displacing air along a closed circling path through said food-treatment chamber and around the means for supporting the food therein and including a funnel-shaped air-guide member opening and widening toward said supporting means over substantially an entire side thereof and converging into said further chamber; a partition in said housing separating said one portion from another portion of the housing adjoining said further chamber; an axial-intake blower mounted on said partition and having its intake registering with the interior of said member at its narrow mouth, and an output discharge around the exterior of said member in a closed circling path tranversing said food-treatment chamber; a motor mounted upon said partition and disposed in said other portion of said housing for driving said blower; and means opening into said intake of said blower and located within said member for supplying heated gas to said blower.
Claim 2
Dependent Claim
25 words
The apparatus defined in claim 2 wherein the last-mentioned means is a conduit having a discharge end extending axially toward said blower within said member.
Claim 3
Dependent Claim
21 words
The apparatus defined in claim 3, further comprising a gas-fueled burner connected with said conduit for delivering said hot gases thereto.
Claim 4
Dependent Claim
38 words
The apparatus defined in claim 4, further comprising a discharge conduit extending upwardly from said housing and opening adjacent the wide mouth of said member, and control means for varying the flow cross section of said discharge conduit.
References Cited (Backward Citations)
GB742248A
Cited
US3384068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |