US4336789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooking gas oven
Assignee: Rinnai Corp
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Filing: 1979-10-04
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Granted: 1982-06-29
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Expires: 1999-10-04
Abstract
Abstract A cooking gas oven of the type with a heating housing having a door on its front and a combustion chamber of forcible exhaust type disposed below the heating housing. A burner is provided in an oven main body. There is formed in the combustion chamber, an intake passage for introducing the external air from an air intake opening in an outside surface of the combustion chamber, into a position of the burner. In the passage, there is a regulating plate for flowing the air over the burner at accelerated speed.
Inventors
- 👤 Kazuo Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:06
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/32; F24C15/322
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
137 words
A cooking gas oven comprising: an oven main body; a heating housing having a front opening and closing door; a combustion chamber of forcible exhaust type disposed below said heating housing; said combustion chamber having a burner, and an air intake passage for introducing external air through an air intake opening in an outside surface of said combustion chamber into a position at which said burner is located; the improvement comprising: a regulating plate in said passage reducing the air passageway and flowing air over the burner at an accelerated speed whereby the burner flame remains generally horizontal, away from any direct contact with said oven main body; a partition plate extending over said burner, a passage gap being formed between said partition plate and said regulating plate, so that air is introduced through said passage gap.
Claim 2
Dependent Claim
137 words
A cooking gas oven comprising: an oven main body; a heating housing having a front opening and closing door; a combustion chamber of forcible exhaust type disposed below said heating housing; said combustion chamber having a burner, and an air intake passage for introducing external air through an air intake opening in an outside surface of said combustion chamber into a position at which said burner is located; the improvement comprising: a regulating plate in said passage reducing the air passageway and flowing air over the burner at an accelerated speed whereby the burner flame remains generally horizontal, away from any direct contact with said oven main body; a partition plate extending over said burner, a passage gap being formed between said partition plate and said regulating plate, so that air is introduced through said passage gap.
Claim 3
Dependent Claim
135 words
A cooking gas oven comprising: an oven main body; a heating housing having a front opening and closing door; a combustion chamber of forcible exhaust type disposed below said heating housing; said combustion chamber including a burner having a nozzle, and an air intake passage for introducing external air through an air intake opening in an outside surface of said combustion chamber into a position at which said burner is located; the improvement comprising: a regulating plate in said passage reducing the air passageway and flowing air over the burner at an accelerated speed whereby the burner flame remains generally horizontal, away from any direct contact with said oven main body and said regulating plate has a hole facing a nozzle of said burner, whereby said hole introduces primary air and confirms a combustion condition.
Claim 4
Dependent Claim
135 words
A cooking gas oven comprising: an oven main body; a heating housing having a front opening and closing door; a combustion chamber of forcible exhaust type disposed below said heating housing; said combustion chamber including a burner having a nozzle, and an air intake passage for introducing external air through an air intake opening in an outside surface of said combustion chamber into a position at which said burner is located; the improvement comprising: a regulating plate in said passage reducing the air passageway and flowing air over the burner at an accelerated speed whereby the burner flame remains generally horizontal, away from any direct contact with said oven main body and said regulating plate has a hole facing a nozzle of said burner, whereby said hole introduces primary air and confirms a combustion condition.
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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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |