US4369760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable oven air circulator
Assignee: Northland Aluminum Products Inc
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Filing: 1980-09-22
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Granted: 1983-01-25
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Expires: 2000-09-22
Abstract
Abstract A portable air circulating apparatus for use in cooking ovens which is used to create air currents in the oven which transfer heat to cooking foodstuffs to promote more rapid and more uniform cooking or baking, the apparatus including a motor, fan blade and housing of metallic materials selected from a class of heat resistant materials.
Inventors
- 👤 Jorgen A. Jorgensen
- 👤 Donald W. Nygren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:14
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/32; F24C15/322
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
A compact portable air circulator for use in a cooking oven to increase the rate and uniformity of cooking and baking which comprises: (a) a fan blade of heat resistant material, (b) a metal housing, (c) a gear reduction train within the housing connected to the fan blade, (d) a spring motor within the housing connected to the gear reduction train to drive the fan, and (e) a large flat horizontal oven rack clamp for positive engagement with a wire oven rack and which clamp also serves as a base for the air circulator so that it might stand upon a horizontal surface in said oven.
Claim 2
Dependent Claim
106 words
A compact portable air circulator for use in a cooking oven to increase the rate and uniformity of cooking and baking which comprises: (a) a fan blade of heat resistant material, (b) a metal housing, (c) a gear reduction train within the housing connected to the fan blade, (d) a spring motor within the housing connected to the gear reduction train to drive the fan, and (e) a large flat horizontal oven rack clamp for positive engagement with a wire oven rack and which clamp also serves as a base for the air circulator so that it might stand upon a horizontal surface in said oven.
Claim 3
Dependent Claim
29 words
The subject matter of claim 1 which further comprises a fan guard to protect the fan blade from impact with other objects and likewise to protect the other objects.
Claim 4
Dependent Claim
14 words
The subject matter of claim 1 wherein the fan and motor are of metal.
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) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |