Patent US3727601A successfully refreshed from Google Patents.
US3727601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baking and roasting oven
Assignee: SEG Hausgeraete GmbH
•
Filing: 1972-02-09
•
Granted: 1973-04-17
•
Expires: 1992-02-09
Abstract
Abstract Baking and roasting oven which includes a muffle chamber having a top wall, a bottom wall and a lateral wall extending between the top and bottom walls, also has a heating means including a circulating blower for hot air, a blower channel for the hot air circulated by the blower, the blower channel interconnecting respective hot air exhaust and hot air injection openings and injection openings being at an elevation of at least one-fourth the height of the muffle chamber from the bottom wall thereof.
Inventors
- 👤 J Klement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:49
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/32; F24C15/322
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
98 words
Baking and roasting oven including a muffle chamber having a top wall, a bottom wall and a lateral wall extending between the top and bottom walls, comprising a heating means including a circulating blower for hot air, a blower channel for the hot air circulated by said blower, said blower channel interconnecting respective hot air exhaust and hot air injection openings formed in the lateral wall of the muffle chamber, said exhaust and injection openings being at an elevation of at least one-fourth the height of the muffle chamber from the bottom wall and the top wall thereof.
Claim 2
Dependent Claim
98 words
Baking and roasting oven including a muffle chamber having a top wall, a bottom wall and a lateral wall extending between the top and bottom walls, comprising a heating means including a circulating blower for hot air, a blower channel for the hot air circulated by said blower, said blower channel interconnecting respective hot air exhaust and hot air injection openings formed in the lateral wall of the muffle chamber, said exhaust and injection openings being at an elevation of at least one-fourth the height of the muffle chamber from the bottom wall and the top wall thereof.
Claim 3
Dependent Claim
24 words
Baking and roasting oven according to claim 1 wherein said exhaust and injection openings are located at the same level of the muffle chamber.
Claim 4
Dependent Claim
27 words
Baking and roasting oven according to claim 2 wherein said exhaust and injection openings are located at an elevation one half the height of the muffle chamber.
Claim 5
Dependent Claim
32 words
Baking and roasting oven according to claim 1 wherein lateral wall of the muffle chamber is the rear wall thereof, and said exhaust and injection openings are formed in the rear wall.
Claim 6
Dependent Claim
33 words
Baking and roasting oven according to claim 4 wherein said exhaust opening and said injection opening are mutually spaced apart a distance corresponding to at least half the width of the rear wall.
Claim 7
Dependent Claim
25 words
Baking and roasting oven according to claim 1 wherein said blower channel is floatingly mounted with respect to the lateral wall of the muffle chamber.
Claim 8
Dependent Claim
49 words
Baking and roasting oven according to claim 1 including annular seals of heat-damming material disposed coaxially to said exhaust and injection openings, said blower channel being mounted spaced from the lateral wall of the muffle chamber, said annular seals being interspersed between the lateral wall and the blower channel.
Claim 9
Dependent Claim
29 words
Baking and roasting oven according to claim 7 wherein the lateral wall of the muffle chamber is formed with depressions, and said annular seals are received in said depressions.
Claim 10
Dependent Claim
25 words
Baking and roasting oven according to claim 7 wherein said blower channel is formed with depressions, and said annular seals are received in said depressions.
Claim 11
Dependent Claim
34 words
Baking and roasting oven according to claim 1 wherein said blower channel is formed of a hollow profile member closed at the ends thereof and containing a heating member and a fanwheel blower therein.
Claim 12
Dependent Claim
18 words
Baking and roasting oven according to claim 10 wherein said hollow profile member has a rectangular cross section.
Claim 13
Dependent Claim
41 words
Baking and roasting oven according to claim 1 including perforated discs covering said exhaust and injection openings, respectively, said perforated discs being located at the inner side of the muffle chamber and being fastened by central screws to said blower channel.
Claim 14
Dependent Claim
38 words
Baking and roasting oven according to claim 12 wherein the lateral wall of the muffle chamber is formed with stampings wherein said Perforated discs are received, said stampings having an edge surrounding the respective perforated discs with clearance.
Claim 15
Dependent Claim
42 words
Baking and roasting oven according to claim 12 wherein said perforated discs are formed as guide discs having means for deflecting hot air exhausting from said exhaust opening so that it travels at an angle to the axis of the guide discs.
Claim 16
Dependent Claim
28 words
Baking and roasting oven according to claim 14 wherein said guide discs are mounted so as to be pivotable relative to the lateral wall of the muffle chamber.
Claim 17
Dependent Claim
19 words
Baking and roasting oven according to claim 15 wherein said guide discs have a screen-type raster with inclined lamellae.
Claim 18
Dependent Claim
17 words
Baking and roasting oven according to claim 14 wherein said guide discs have a respective adjusting handle.
Claim 19
Dependent Claim
34 words
Baking and roasting oven according to claim 1 wherein said blower channel has a side facing the muffle chamber, said blower channel side being formed with passages accommodated to said exhaust and injection openings.
Claim 20
Dependent Claim
46 words
Baking and roasting oven according to claim 18 wherein said blower channel has a side facing away from the muffle chamber, said latter side being formed with inlet openings disposed opposite said passages and adapted to accommodate therein a fanwheel blower and a heating member, respectively.
Claim 21
Dependent Claim
32 words
Baking and roasting oven according to claim 19 including flange plates covering said inlet openings, said flange plates having a lining of heat-damming material on the side thereof facing said inlet openings.
Claim 22
Dependent Claim
31 words
Baking and roasting oven according to claim 20 including respective bearing means for said fanwheel blower and said heating member, said flange plates serving as carriers for the respective bearing means.
References Cited (Backward Citations)
US3474225A
Cited
US3530278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |