US3670746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination dishwashing machine and oven
Assignee: ELEKTRA BREGENZ GmbH
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Filing: 1971-01-26
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Granted: 1972-06-20
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Expires: 1991-01-26
Abstract
Abstract A combination dishwashing machine and oven is formed of an opentopped tank with a cover closing its opening, a heating element unit spaced vertically above the opening in the tank, and a vertically displaceable shell positionable between the cover and the heating element unit for laterally defining the oven space. A vertically arranged support column is associated with the tank and includes a lifting mechanism for displacing the shell downwardly into the tank from its position about the oven and for lifting dishwashing baskets upwardly out of the tank. The shell, tank cover and dishwashing baskets are sized so that the shell fits around the cover and baskets for effecting the vertical displacement of the various parts.
Inventors
- 👤 Hasso Gehrmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:35
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/0097; F; F24; F24C; F24C15/00; F24C15/18
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
116 words
Combination dishwashing machine and oven including an opentopped vat-like tank closed about its lateral circumference, a basket assembly positioned within said tank and arranged to receive dishes to be cleaned therein, means cooperating with said tank for cleaning dishes supported within said basket assembly, and a cover for the open-topped end of said tank, wherein the improvement comprises at least one heating element unit spaced vertically above said cover, and an elongated sleeve-like shell vertically displaceable between a first position within said tank and a second position extending vertically upward from the upper surface of said tank in which second position said shell extends between the upper surface of said tank and said heating element unit.
Claim 2
Dependent Claim
116 words
Combination dishwashing machine and oven including an opentopped vat-like tank closed about its lateral circumference, a basket assembly positioned within said tank and arranged to receive dishes to be cleaned therein, means cooperating with said tank for cleaning dishes supported within said basket assembly, and a cover for the open-topped end of said tank, wherein the improvement comprises at least one heating element unit spaced vertically above said cover, and an elongated sleeve-like shell vertically displaceable between a first position within said tank and a second position extending vertically upward from the upper surface of said tank in which second position said shell extends between the upper surface of said tank and said heating element unit.
Claim 3
Dependent Claim
59 words
Combination dishwashing machine and oven, as set forth in claim 1, wherein said shell having an outside diameter slightly smaller than the inside diameter of said tank and an inside diameter larger than the diameter of said basket assembly so that in its first position said shell fits between said basket assembly and the inside wall of said tank.
Claim 4
Dependent Claim
27 words
Combination dishwashing machine and oven, as set forth in claim 2, wherein the vertical dimension of said shell is less than the vertical dimension of said tank.
Claim 5
Dependent Claim
45 words
Combination dishwashing machine and oven, as set forth in claim 2, characterized in that said shell having an inside diameter slightly greater than the diameter of the peripheral circumference of said cover so that said shell can pass downwardly about said cover into said tank.
Claim 6
Dependent Claim
83 words
Combination dishwashing machine and oven, as set forth in claim 1, characterized in that a vertically arranged support member being associated with and extending upwardly from the upper surface of said tank, two lifting devices associated with said support member with one of said lifting devices arranged to displace said shell between its first and second positions and the other said lifting device arranged to displace said basket assembly between said tank and a position spaced above the upper surface of said tank.
Claim 7
Dependent Claim
49 words
Combination dishwashing machine and oven, as set forth in claim 5, characterized in that said support member has recesses formed therein between the upper edge of said tank and said heating element unit for detachably securing elements for use in supporting cooking utensils and the like within said oven.
Claim 8
Dependent Claim
42 words
Combination dishwashing machine and oven, as set forth in claim 5, wherein said heating element unit is secured to said support member, and said heating element unit comprises a housing enclosing a heating element and forming the upper end of said oven.
Claim 9
Dependent Claim
30 words
Combination dishwashing machine and oven, as set forth in claim 7, characterized in that at least one air circulating unit being positioned within said housing of said heating element unit.
Claim 10
Dependent Claim
45 words
Combination dishwashing machine and oven, as set forth in claim 5, characterized in that said support member is formed as a hollow column With said lifting devices located within the hollow column, and at least one longitudinally extending air duct located within the hollow column.
Claim 11
Dependent Claim
56 words
Combination dishwashing machine and oven, as set forth in claim 7, wherein said air duct having at least two vertically spaced openings, with one said opening communicating with said housing for said heating element unit and the other said opening communicating with the space between the upper edge of said tank and said heating element unit.
Claim 12
Dependent Claim
42 words
Combination dishwashing machine and oven, as set forth in claim 9, wherein said air duct extends downwardly to a position adjacent the lower end of said tank and said air duct having an opening communicating with the lower portion of said tank.
Claim 13
Dependent Claim
55 words
Combination dishwashing machine and oven, as set forth in claim 5, wherein said basket assembly comprises a plurality of superposed baskets, each of said baskets being divided into two half basket sections and being supported on said support member so that each half basket section can be displaced laterally and removed from said support member.
Claim 14
Dependent Claim
47 words
Combination dishwashing machine and oven, as set forth in claim 1, characterized in that the vertical dimension between said cover and the lower surface of said basket assembly is substantially equal to the vertical dimension between the upper edge of said tank and said heating element unit.
Claim 15
Dependent Claim
30 words
Combination dishwashing machine and oven, as set forth in claim 1, characterized in that said shell is formed of a transparent heat resistant material which is insensitive to temperature shocks.
Claim 16
Dependent Claim
41 words
Combination dishwashing machine and oven, as set forth in claim 1, characterized in that said shell being formed as a double-walled structure comprising an inner wall consisting of a transparent material and an outer wall formed of a perforated metal plate.
Claim 17
Dependent Claim
37 words
Combination dishwashing machine and oven, as set forth in claim 1, characterized in that heating coils are arranged in said cover which closes the top opening in said tank whereby said cover serves as a hot plate.
Claim 18
Dependent Claim
23 words
Combination dishwashing machine and oven, as set forth in claim 1, characterized in that said tank and said shell being in coaxial arrangement.
Claim 19
Dependent Claim
23 words
Combination dishwashing machine and oven, as set forth in claim 1, wherein said heating element unit being vertically displaceable on said support member.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |