Patent US4235591A successfully refreshed from Google Patents.
US4235591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous flow oven
Assignee: Gautschi Electro-Fours SA
•
Filing: 1978-05-22
•
Granted: 1980-11-25
•
Expires: 1998-05-22
Abstract
Abstract A continuous flow heating oven of the industrial type used for the heating of ingots, sheet material and the like, which may be of light metal or light metal alloy, includes a burner fired with a liquid or gaseous fuel disposed within a heating chamber. The material to be heated is placed within the oven with the convection air currents generated from the burners directed thereon, with the hot combustion gases produced by the flames. In addition, the exhaust gases are compressed and directed back onto the object to be heated interspersing with the convection air currents originally generated to increase the efficiency of heating the material.
Inventors
- 👤 Heinrich Aebli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:31
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/34; C21D1/52; F; F27; F27D; F27D7/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
A continuous flow oven for heating materials comprising: a. a heating chamber having a heating means disposed therein, an input opening, an exit opening and an exhaust port, said input opening being adapted to receive said materials which exit via said exit opening; b. means for directly heating said material with the convection air currents from said heating means directed thereon; c. blower means having intake and exhaust openings within said heating chamber, said blower intake sucking said convection air currents from said chamber and exhausting them under pressure; and d. a pressure chamber cooperating with said blower exhaust opening and receiving said pressurized air currents, said pressure chamber being provided with a plurality of exhaust jets directed towards said material to be heated, said pressurized air currents mixing and interspersing with said convection air currents as it impinges upon said material.
Claim 2
Dependent Claim
142 words
A continuous flow oven for heating materials comprising: a. a heating chamber having a heating means disposed therein, an input opening, an exit opening and an exhaust port, said input opening being adapted to receive said materials which exit via said exit opening; b. means for directly heating said material with the convection air currents from said heating means directed thereon; c. blower means having intake and exhaust openings within said heating chamber, said blower intake sucking said convection air currents from said chamber and exhausting them under pressure; and d. a pressure chamber cooperating with said blower exhaust opening and receiving said pressurized air currents, said pressure chamber being provided with a plurality of exhaust jets directed towards said material to be heated, said pressurized air currents mixing and interspersing with said convection air currents as it impinges upon said material.
Claim 3
Dependent Claim
46 words
An oven according to claim 1 wherein said heating means is disposed at one end of said heating chamber and said chamber exhaust port and said blower means are disposed at the opposite end thereof with said pressure chamber and associated exhaust jets being disposed therebetween.
Claim 4
Dependent Claim
199 words
A continuous flow oven for heating materials comprising: a. a heating chamber having heating means disposed therein, an input opening, an exit opening and an exhaust port, said input opening being adapted to receive said materials which exit via said exit opening; b. means for directly heating said material with the convection air currents from said heating means directed thereon, said heating means being disposed at one end ofsaid heating chamber and said chamber exhaust port being disposed at the opposite end thereof, said convection air currents being the exhaust gases generated by said heating means; c. blower means having intake and exhaust openings disposed proximate said chamber exhaust port and within said heating chamber, said blower intake sucking said convection air currents from said chamber and exhausting them under pressure; and d. a pressure chamber cooperating with said blower exhaust opening and receiving said pressurized air currents, said pressure chamber being provided with a plurality of exhaust jets directed towards said material to be heated, said pressurized air currents mixing and interspursing with said air currents, said pressure chamber and associated exhaust jets being disposed between said heating means and said chamber exhaust port and said blower means.
Claim 5
Dependent Claim
199 words
A continuous flow oven for heating materials comprising: a. a heating chamber having heating means disposed therein, an input opening, an exit opening and an exhaust port, said input opening being adapted to receive said materials which exit via said exit opening; b. means for directly heating said material with the convection air currents from said heating means directed thereon, said heating means being disposed at one end ofsaid heating chamber and said chamber exhaust port being disposed at the opposite end thereof, said convection air currents being the exhaust gases generated by said heating means; c. blower means having intake and exhaust openings disposed proximate said chamber exhaust port and within said heating chamber, said blower intake sucking said convection air currents from said chamber and exhausting them under pressure; and d. a pressure chamber cooperating with said blower exhaust opening and receiving said pressurized air currents, said pressure chamber being provided with a plurality of exhaust jets directed towards said material to be heated, said pressurized air currents mixing and interspursing with said air currents, said pressure chamber and associated exhaust jets being disposed between said heating means and said chamber exhaust port and said blower means.
Claim 6
Dependent Claim
24 words
An oven according to claims 1 or 3 wherein said heating means generates a flame directed substantially perpendicular to said material to be heated.
Claim 7
Dependent Claim
29 words
An oven according to claims 1 or 3 further including means for continuously moving said material through said heating chamber from said input opening and out said exit opening.
Claim 8
Dependent Claim
25 words
A flow oven for heating materials according to claims 1 or 3 wherein said input opening and said exhaust port are one and the same.
Claim 9
Independent Claim
99 words
The method of heating continuously moving material in a chamber having a heating means disposed therein; in put and output openings; and an exhaust port; comprising; a. feeding said material into said input opening of said heating chamber; b. heating said material with the convection air currents from said heating means directed thereon; c. compressing a major portion of said convection air currents appearing proximate said exhaust port; and d. directing said compressed air currents by means of jets towards said material to be heated tomix and intersperse with said convection air currents as it impinges upon said material.
Claim 10
Independent Claim
99 words
The method of heating continuously moving material in a chamber having a heating means disposed therein; in put and output openings; and an exhaust port; comprising; a. feeding said material into said input opening of said heating chamber; b. heating said material with the convection air currents from said heating means directed thereon; c. compressing a major portion of said convection air currents appearing proximate said exhaust port; and d. directing said compressed air currents by means of jets towards said material to be heated tomix and intersperse with said convection air currents as it impinges upon said material.
Claim 11
Dependent Claim
18 words
The method of claim 7 further including moving said material through said heating chamber in a predetermined time.
References Cited (Backward Citations)
US2512326A
Cited
US2731732A
Cited
US2795054A
Cited
US3186694A
Cited
US3874091A
Cited
US4116620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |