US4444175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convection heated secondary oven
Assignee: CONNERTON APPLIANCE COMPANY A CORP OF
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Filing: 1982-12-29
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Granted: 1984-04-24
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Expires: 2002-12-29
Abstract
Abstract A secondary oven heated by restricted heat transfer from a primary oven through a common pan-roof tempered by convention flow of ambient outside air adjustably mixed with primary oven vent air controlled by a damper diverting a portion of primary oven vent air through the secondary oven with the balance thereof discharged externally.
Inventors
- 👤 Howard S. Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:20
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/32; F24C3/00; F24C3/12; F24C3/126; F24C3/128
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
119 words
A secondary convection oven above a primary oven and heated thereby, said including in combination; a common pan-roof separating the two ovens, burner means in the primary oven and a first hot air exhaust vent discharge therefor, an ambient air inlet through a side of the secondary oven for convection flow of outside air into said oven, adjustable damper means at the first hot air exhaust vent of the primary oven dividing the said hot air exhaust from the burner means for convection flow proportionately into the secondary oven and externally of said two ovens, and a second hot air exhaust vent from the secondary oven, selective adjustment of said adjustable damper means increasing and decreasing secondary oven temperature.
Claim 2
Dependent Claim
119 words
A secondary convection oven above a primary oven and heated thereby, said including in combination; a common pan-roof separating the two ovens, burner means in the primary oven and a first hot air exhaust vent discharge therefor, an ambient air inlet through a side of the secondary oven for convection flow of outside air into said oven, adjustable damper means at the first hot air exhaust vent of the primary oven dividing the said hot air exhaust from the burner means for convection flow proportionately into the secondary oven and externally of said two ovens, and a second hot air exhaust vent from the secondary oven, selective adjustment of said adjustable damper means increasing and decreasing secondary oven temperature.
Claim 3
Dependent Claim
35 words
The secondary and primary oven combination as set forth in claim 1, wherein the common pan-roof is a heat conductor of primary oven heat into the secondary oven for heating of the ambient inlet air.
Claim 4
Dependent Claim
45 words
The secondary and primary oven combination as set forth in claim 1, wherein the common pan-roof is a heat conductor of primary oven heat with insulation restricting the transfer of primary oven heat into the secondary oven for limited heating of the ambient inlet air.
Claim 5
Dependent Claim
47 words
The secondary and primary oven combination as set forth in claim 1, wherein the burner means is a top burner means that includes radiants, and wherein the common pan-roof is a heat conductor of radiant heat into the secondary oven for heating of the ambient inlet air.
Claim 6
Dependent Claim
57 words
The secondary and primary oven combination as set forth in claim 1, wherein the burner means is a top burner means that includes radiants, and wherein the common pan-roof is a heat conductor of radiant heat with insulation restricting the transfer of primary oven heat into the secondary oven for limited heating of the ambient inlet air.
Claim 7
Dependent Claim
27 words
The secondary and primary oven combination as set forth in claim 1, wherein the ambient air inlet is above the common pan-roof and into the secondary oven.
Claim 8
Dependent Claim
43 words
The secondary and primary oven combination as set forth in claim 1, wherein the ambient air inlet is at the opposite sides of and extending forwardly from the back of the secondary oven and above the common pan-roof and into the secondary oven.
Claim 9
Dependent Claim
36 words
The secondary and primary oven combination as set forth in claim 1, wherein the ambient air inlet is comprised of louvers turned horizontally into the secondary oven above the common pan-roof and into the secondary oven.
Claim 10
Dependent Claim
69 words
The secondary and primary oven combination as set forth in claim 1, wherein the ambient air inlet is at the opposite sides of and extending forwardly from the back of the secondary oven and above the common pan-roof and into the secondary oven, and wherein the ambient air inlet is comprised of louvers turned horizontally into the secondary oven immediately above the common pan-roof and into the secondary oven.
Claim 11
Dependent Claim
54 words
The secondary and primary oven combination as set forth in claim 1, wherein the adjustable damper means overlies the first hot air exhaust vent of the primary oven and comprises a flop member moveable alternately between a top opening to the exterior of said two ovens and a forward opening into the secondary oven.
Claim 12
Dependent Claim
61 words
The secondary and primary oven combination as set forth in claim 1, wherein the adjustable damper means overlies the first hot air exhaust vent of the primary oven and comprises a moveable flap member with a lever operated detent means and positionable alternately between a top opening to the exterior of said two ovens and a forward openinginto the secondary oven.
Claim 13
Dependent Claim
70 words
The secondary and primary oven combination as set forth in claim 1, wherein the secondary and primary ovens and separable units and the adjustable damper means is a separate unit disposed therebetween and overlies the first hot air exhaust vent of the primary oven and comprises a flap member moveable alternately between a top opening to the exterior of said two ovens and a forward opening into the secondary oven.
Claim 14
Dependent Claim
78 words
The secondary and primary oven combination as set forth in claim 1, wherein the secondary and primary ovens are separable units and the adjustable damper means is a separate unit disposed therebetween and overlies the first hot air exhaust vent of the primary oven and comprises a moveable flap member with a lever operated detent means and positionable alternately between a top opening to the exterior of said two ovens and a forward opening into the secondary oven.
Claim 15
Dependent Claim
57 words
The secondary and primary oven combination as set forth in claim 1, wherein the primary oven heat range is 250° to 600° F., and wherein the common pan-roof is a heat conductor of primary oven heat with insulation restricting the secondary oven heat range to 150° to 200° F. for limited heating of the ambient inlet air.
Claim 16
Dependent Claim
40 words
The secondary and primary oven combination as set forth in claim 1, wherein the area of the second hot air exhaust vent from the secondary oven is greater than the area of the damper means opening into the secondary oven.
Claim 17
Dependent Claim
41 words
The secondary and primary oven combination as set forth in claim 1, wherein the area of the second hot air exhaust vent from the secondary oven is greater than the area of the ambient air inlet opening into the secondary oven.
Claim 18
Dependent Claim
54 words
The secondary and primary oven combination as set forth in claim 1, wherein the area of the second hot air exhaust vent from the secondary oven and the area of the damper means opening into the secondary oven and are greater than the area of the ambient air inlet opening into the secondary oven.
Claim 19
Dependent Claim
98 words
The secondary and primary oven combination as set forth in claim 1, wherein the primary oven heat range is 250° to 600° F., wherein the common pan-roof is a heat conductor of primary oven heat with insulation restricting the secondary oven heat range to 150° to 200° F. for limited heating of the ambient inlet air, and wherein the area of the second hot air exhaust vent from the secondary oven and the area of the damper means opening into the secondary oven are greater than the area of the ambient air inlet opening into the secondary oven.
Claim 20
Dependent Claim
57 words
The secondary and primary oven combination as set forth in claim 1, wherein the area of the second hot air exhaust vent from the secondary oven is at least as great as the area of either the first hot air exhaust vent of the primary oven and of the ambient air inlet opening into the secondary oven.
Claim 21
Dependent Claim
171 words
The secondary and primary oven combination as set forth in claim 1, wherein the burner means is a top burner means that includes radiants and the common pan-roof is a heat conductor of radiant heat with insulation restricting the transfer of primary oven heat into the secondary oven for limited heating of the ambient air, wherein the ambient air inlet is comprised of louvers turned horizontally into the secondary oven above the common pan-roof and into the secondary oven, wherein the adjustable damper means overlies the first hot air exhaust vent of the primary oven and comprises a moveable flap member with a lever operated detent means and positionable alternately between a top opening to the exterior of said two ovens and a forward opening into the secondary oven, and wherein the area of the second hot air exhaust vent from the secondary oven and the area of the damper means opening into the secondary oven are greater than the area of the ambient air inlet opening into the secondary oven.
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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) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |