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US4297558A Expired / Lapsed US ⏱️ 0.0 years remaining

Composite cooking device

Assignee: Rinnai Corp
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Filing: 1980-04-25
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Granted: 1981-10-27
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Expires: 2000-04-25
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Abstract

Abstract The present application discloses a composite cooking device of the type having a box-shaped main body provided therein with a heating chamber, a heat source such as a gas burner, a magnetron, and a cooling fan for sending air into a cooling duct, having the magnetron interposed therein, and formed between the cooking device main body and the heating chamber, a one-sided space chamber with a front operation panel and an upper area which extends from the space chamber and is in communication with the atmosphere through an exhaust opening made in the upper portion of the main body. The device includes a control means for application of a high voltage applied through a transformer, or the like, the same contained in the space chamber. The invention is characterized in that the interior of the space chamber is separated by at least one partition wall into a front chamber for containing the control means and a rear chamber for containing the high voltage element. A cooling fan is in communication at its intake side with the interior of the rear chamber, and the forward end of the cooling duct is open to the exhaust opening.

Inventors

  • 👤 Minoru Inayama
  • 👤 Yukio Furukawa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 12:56
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/74; H05B6/745; F; F24; F24C; F24C15/00; F24C15/006; F24C15/32; F24C15/322; H05B6/647; H05B6/6473

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 199 words
A composite cooking device in which the main body of a box-type cooking device is provided with a heating chamber, a heat source, a magnetron, and a cooling fan for sending air into a cooling duct having the magnetron interposed therein, further in which there is formed, between the cooking device main body and the heating chamber, a one-sided chamber with a front operation panel and an upper space which extends from the space chamber and is in communication wth the atmosphere through an exhaust opening made in the upper portion of the main body, yet further in which a control means and a high-voltage element, such as a transformer, is contained in the space chamber in which the improvement comprises: (a) said space chamber having its interior divided by at least one partition wall, such division forming (i) a front chamber adapted for containment of said control means and (ii) a rear chamber for containment of said high voltge element; and (b) said cooling fan in communication at its intake side with the interior of said rear chamber, wherein the forward end of said cooling duct is in open communication with the exhaust opening of the main body.
Claim 2
Dependent Claim 199 words
A composite cooking device in which the main body of a box-type cooking device is provided with a heating chamber, a heat source, a magnetron, and a cooling fan for sending air into a cooling duct having the magnetron interposed therein, further in which there is formed, between the cooking device main body and the heating chamber, a one-sided chamber with a front operation panel and an upper space which extends from the space chamber and is in communication wth the atmosphere through an exhaust opening made in the upper portion of the main body, yet further in which a control means and a high-voltage element, such as a transformer, is contained in the space chamber in which the improvement comprises: (a) said space chamber having its interior divided by at least one partition wall, such division forming (i) a front chamber adapted for containment of said control means and (ii) a rear chamber for containment of said high voltge element; and (b) said cooling fan in communication at its intake side with the interior of said rear chamber, wherein the forward end of said cooling duct is in open communication with the exhaust opening of the main body.
Claim 3
Dependent Claim 40 words
A composite cooking device as recited in claim 1, in which the partition wall comprises a pair of front and rear partition walls which are disposed in parallel, one with another, os as to be distal-proximately separated from each other.

References Cited (Backward Citations)

US2860026A Cited
US3654417A Cited
US3818171A Cited
US4123643A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-10-26 1985-04-27 1985-10-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-10-26 1989-04-27 1989-10-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-10-26 1993-04-27 1993-10-27 $7700.00 Window Closed / Lapsed

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