Patent US4491235A successfully refreshed from Google Patents.
US4491235A
Expired / Lapsed
US
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Wok
Assignee: Individual
•
Filing: 1979-03-20
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Granted: 1985-01-01
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Expires: 1999-03-20
Abstract
Abstract A wok having a bowl-shaped configuration including a relatively shallow curving bottom portion and curving sides which increase in slope upwardly is described. The wok differs from customary woks in that the exterior surface of the bottom portion is flat so that the thickness of the bottom portion increases from the center generally radially outwardly and this thickened material forms a heat sink. The flat exterior bottom permits the wok to be seated on electrical heating surfaces for maximum heat transfer. The wok is also provided with a handle construction which includes a pair of oppositely directed handles integrally formed with the bowl-like utensil portion and extending outwardly and terminating in grip members formed of insulating material.
Inventors
- 👤 Robert L. Fournier
- 👤 Priscilla J. Fournier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:28
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/002; A47J27/02; A47J27/022; Y; Y10; Y10S; Y10S220/00; Y10S220/912
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
A cast iron wok comprising a bowl-like cooking utensil having an interior and an exterior, said utensil interior including a continuously curving bottom surface, and said utensil exterior including a flat bottom surface, said utensil exterior and interior curving upwardly and radially outwardly from said flat bottom surface and said curving bottom surface in generally concentric relation with said utensil wall above said bottom being substantially of uniform thickness, said utensil wall terminating in a rim, said rim extending radially outwardly from said utensil wall and curving downwardly, said flat bottom surface and said curving bottom surface combining to define a wall portion of greatest thickness at the bottom of said utensil in the form of a heat sink, said wok including insulated handle means extending outwardly from said exterior surface substantially immediately below said rim.
Claim 2
Dependent Claim
136 words
A cast iron wok comprising a bowl-like cooking utensil having an interior and an exterior, said utensil interior including a continuously curving bottom surface, and said utensil exterior including a flat bottom surface, said utensil exterior and interior curving upwardly and radially outwardly from said flat bottom surface and said curving bottom surface in generally concentric relation with said utensil wall above said bottom being substantially of uniform thickness, said utensil wall terminating in a rim, said rim extending radially outwardly from said utensil wall and curving downwardly, said flat bottom surface and said curving bottom surface combining to define a wall portion of greatest thickness at the bottom of said utensil in the form of a heat sink, said wok including insulated handle means extending outwardly from said exterior surface substantially immediately below said rim.
Claim 3
Dependent Claim
40 words
A wok according to claim 1 wherein said handles are integral and extend radially outwardly from said exterior surface immediately below said curving rim, and said handles carry insulated grip members having radially outer portions of said handles embedded therein.
Claim 4
Dependent Claim
21 words
A wok according to claim 2, wherein outer portions of said handles are vertically offset to generally lie above said rim.
Claim 5
Dependent Claim
22 words
A wok according to claim 2, wherein said handles carry insulating grip members having radially outer portions of said handles embedded therein.
Claim 6
Dependent Claim
37 words
A wok according to claim 2 wherein each of said handles carries an insulating grip member in the form of a generally rectangular block, each block having a radially outer face curved in both plan and elevation.
Claim 7
Dependent Claim
19 words
A wok according to claim 5 wherein each handle has a radially outer end embedded in the respective block.
Claim 8
Dependent Claim
30 words
A wok according to claim 5 wherein each handle has a radially outer end embedded in the respective block and a radially inner end downwardly offset from said outer end.
References Cited (Backward Citations)
US2493983A
Cited
US2722173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |