US4171478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circulating-air oven
Assignee: KOPAL Oy
•
Filing: 1977-06-16
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Granted: 1979-10-16
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Expires: 1997-06-16
Abstract
Abstract A circulating air oven having a power portion which provides heat which is sent through its open front. The power portion is permanently mounted onto a pedestal which can detachably receive an oven portion. The oven portion includes a removable rear wall so that the entire rear of the oven portion can be opened up and matingly engaged with the power portion to receive the heated air. The oven portion can be detached and the rear covered whereby a heat insulating container is provided. The oven portion includes handles and other means to permit transportation of the oven portion away from the pedestal to transport and distribute food prepared in the oven portion.
Inventors
- 👤 Niilo Naykki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:38
CPC Classifications
A; A47; A47J; A47J39/00; A47J39/003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
A circulating-air oven comprising a power portion and a detachable oven portion, said power portion comprising a housing with an open front, said housing being permanently mounted on a pedestal and comprising standard components for blowing heat through said open front; said oven portion comprising a heat insulated housing having a front door and a completely open rear section, a removable rear wall for selectively covering the entire rear section, means for detachably positioning said oven portion on said pedestal in direct side-by-side relationship with said power portion to provide a unitary oven structure, and with the entire rear section thereof directly matingly engaging the open front of said power portion whereby the heat can enter from said power portion into the interior of said oven portion through the entire area of the rear section, the heat insulated housing being in the shape of a portable transport box, and further comprising means for facilitating transport thereof, whereby when said oven portion is separated from said power portion said rear wall can cover said rear section and said oven can be utilized for transporting and distributing food prepared therein.
Claim 2
Dependent Claim
188 words
A circulating-air oven comprising a power portion and a detachable oven portion, said power portion comprising a housing with an open front, said housing being permanently mounted on a pedestal and comprising standard components for blowing heat through said open front; said oven portion comprising a heat insulated housing having a front door and a completely open rear section, a removable rear wall for selectively covering the entire rear section, means for detachably positioning said oven portion on said pedestal in direct side-by-side relationship with said power portion to provide a unitary oven structure, and with the entire rear section thereof directly matingly engaging the open front of said power portion whereby the heat can enter from said power portion into the interior of said oven portion through the entire area of the rear section, the heat insulated housing being in the shape of a portable transport box, and further comprising means for facilitating transport thereof, whereby when said oven portion is separated from said power portion said rear wall can cover said rear section and said oven can be utilized for transporting and distributing food prepared therein.
Claim 3
Dependent Claim
62 words
A circulating-air oven as in claim 1 and wherein said positioning means comprises cooperative guide means on said pedestal and on said heat insulated housing for slidingly positioning said oven portion alongside said power portion, and further comprising cooperative locking means on said power portion housing and on said heat insulated housing for tightly locking the oven portion to the power portion.
Claim 4
Dependent Claim
48 words
A circulatory air-oven as in claim 2 further comprising hinge means coupling said removable rear wall to the top of said rear section so that said rear wall can be positioned on top of said heat insulated housing when said oven portion is locked to said power portion.
References Cited (Backward Citations)
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Cited
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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) | 1982-10-15 | 1983-04-16 | 1983-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-15 | 1987-04-16 | 1987-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-15 | 1991-04-16 | 1991-10-16 | $7700.00 | Window Closed / Lapsed |