US4645911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating device for radiation heating units heated by electric energy
Assignee: BSH Hausgeräte GmbH
•
Filing: 1985-02-25
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Granted: 1987-02-24
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Expires: 2005-02-25
Abstract
Abstract A heating device for radiation heating units heated by electric energy includes a radiation heating region and a combination of high-temperature radiation heating elements and normal-temperature radiation heating elements disposed in the heating region.
Inventors
- 👤 Julius Husslein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:45
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/06; H; H05; H05B; H05B3/00; H05B3/68; H05B3/74; H05B3/742
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
118 words
Heating device, comprising a pot-shaped heating unit support, at least two radiation heating units heated by electric energy and disposed in said heating unit support, at least one of said heating units being a high-temperature radiation heating element and at least one of said heating units being a normal-temperature radiation heating element, said normal-temperature heating element being exposed to ambient air, an enclosure surrounding said high-temperature radiation heating element, a protective gas disposed in said enclosure, said enclosure and said normal-temperature radiation heating element being mutually spaced apart defining an unobstructed space therebetween, and a planar support surface defining a single heating zone disposed above both of said heating units for supporting containers for food to be heated.
Claim 2
Dependent Claim
118 words
Heating device, comprising a pot-shaped heating unit support, at least two radiation heating units heated by electric energy and disposed in said heating unit support, at least one of said heating units being a high-temperature radiation heating element and at least one of said heating units being a normal-temperature radiation heating element, said normal-temperature heating element being exposed to ambient air, an enclosure surrounding said high-temperature radiation heating element, a protective gas disposed in said enclosure, said enclosure and said normal-temperature radiation heating element being mutually spaced apart defining an unobstructed space therebetween, and a planar support surface defining a single heating zone disposed above both of said heating units for supporting containers for food to be heated.
Claim 3
Dependent Claim
20 words
Heating device according to claim 1, wherein said high-temperature radiation heating elements operate at a temperature of approximately 2000° C.
Claim 4
Dependent Claim
20 words
Heating device according to claim 2, wherein said normal-temperature radiation heating elements operate at a temperature of approximately 1000° C.
Claim 5
Dependent Claim
18 words
Heating device according to claim 1, wherein said normal-temperature radiation heating elements are exposed to the surrounding atmosphere.
Claim 6
Dependent Claim
20 words
Heating device according to claim 1, wherein said normal-temperature radiation heating elements operate at a temperature of approximately 1000° C.
Claim 7
Dependent Claim
26 words
Heating device according to claim 1, wherein said normal-temperature radiation heating elements are constructed for connection to an electrical supply of up to approximately 1500 Watts.
Claim 8
Dependent Claim
26 words
Heating device according to claim 1, wherein said high-temperature radiation heating elements are constructed for connection to an electrical supply of up to approximately 700 Watts.
Claim 9
Dependent Claim
28 words
Heating device according to claim 1, wherein said normal-temperature radiation heating elements and said high-temperature radiation heating elements are individually supplied with electric energy from associated control devices.
Claim 10
Dependent Claim
30 words
Heating device according to claim 1, wherein said normal-temperature radiation heating elements are supplied with regulated electric energy, and said high-temperature radiation heating elements are supplied with constant electric energy.
Claim 11
Dependent Claim
25 words
Heating device according to claim 1, wherein said normal-temperature radiation heating elements and said high-temperature radiation heating elements are symmetrically disposed in said heating region.
Claim 12
Dependent Claim
28 words
Heating device according to claim 1, wherein said high-temperature radiation heating elements as well as said normal-temperature radiation heating elements are substantially uniformly distributed over said heating region.
Claim 13
Dependent Claim
25 words
Heating device according to claim 1, wherein said normal-temperature radiation heating elements and said high-temperature radiation heating elements are alternatingly disposed in said heating region.
Claim 14
Dependent Claim
27 words
Heating device according to claim 1, including a layer disposed at least below said high-temperature radiation heating elements on said heating unit support for reflecting radiation heat.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |