US3724711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooking utensil assembly
Assignee: Alcoa Corp
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Filing: 1971-08-20
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Granted: 1973-04-03
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Expires: 1991-08-20
Abstract
Abstract A cooking utensil assembly including an outer metal container having a continuous base portion and a continuous generally upwardly directed annular sidewall. An inner metal container secured within the outer container and having a continuous bottom wall and a generally upwardly directed annular lateral wall. At least one venting passageway defined between an outwardly open venting channel positioned in the inner container lateral wall and the adjacent portion of the outer container sidewall. Venting conduits may be provided between radially disposed downwardly open venting channels in the inner container bottom wall and the underlying adjacent outer container base portion.
Inventors
- 👤 W Patterson
- 👤 D George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:08
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/10; A47J36/00; A47J36/02; A47J36/022; A47J36/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
144 words
A cooking utensil assembly comprising an outer metal container having a continuous generally upwardly directed sidewall, an inner metal container disposed within said outer container having a continuous bottom wall and a generally upwardly directed lateral wall, at least one inwardly directed outwardly open venting channel integrally formed within said inner container lateral wall and having an opening adjacent the upper portion of said lateral wall, said inner container lateral wall and said outer container sidewall in intimate surface to surface contact except for those sectors within which said venting channels are disposed, and said venting channels cooperating with said outer container annular sidewall to define upwardly open venting passageways, whereby gaseous material generated between said inner and outer containers will be transported within said venting passageways and discharged to the surrounding atmosphere from said opening disposed adjacent the periphery of the inner container.
Claim 2
Dependent Claim
144 words
A cooking utensil assembly comprising an outer metal container having a continuous generally upwardly directed sidewall, an inner metal container disposed within said outer container having a continuous bottom wall and a generally upwardly directed lateral wall, at least one inwardly directed outwardly open venting channel integrally formed within said inner container lateral wall and having an opening adjacent the upper portion of said lateral wall, said inner container lateral wall and said outer container sidewall in intimate surface to surface contact except for those sectors within which said venting channels are disposed, and said venting channels cooperating with said outer container annular sidewall to define upwardly open venting passageways, whereby gaseous material generated between said inner and outer containers will be transported within said venting passageways and discharged to the surrounding atmosphere from said opening disposed adjacent the periphery of the inner container.
Claim 3
Dependent Claim
44 words
The cooking utensil of claim 1 wherein said venting passageways have a lower opening communicating with the lower surface of said inner container bottom wall, and said venting passageways have an opening communicating with the atmosphere adjacent the upper portion of said lateral wall.
Claim 4
Dependent Claim
22 words
The cooking utensil assembly of claim 2 wherein said venting passageways have an opening communicating with the interior of said inner container.
Claim 5
Dependent Claim
69 words
The cooking utensil assembly of claim 2 wherein said inner container bottom wall has at least one upwardly directed downwardly open venting channel which is generally radially oriented, said venting channels cooperate with said outer container continuous base to define horizontally disposed venting conduits, and the radially outer extremity of said horizontal venting conduits communicating with said venting passageways defined by said sidewall and said lateral wall venting channel.
Claim 6
Dependent Claim
53 words
The cooking utensil assembly of claim 2 wherein said sidewall and said lateral wall are frusto-conical, said base portion and said bottom wall are circular, and said inner container and said outer container cooperate to define a plurality of upwardly directed venting passageways which are generally symmetrically positioned about said frusto-conical lateral wall.
Claim 7
Dependent Claim
42 words
The cooking utensil assembly of claim 5 wherein each said venting passageway has an average radial depth at its longitudinal midpoint of about one-sixteenth to three-eighths inch and an average circumferential width at its longitudinal midpoint of about one-sixteenth to one-half inch.
Claim 8
Dependent Claim
43 words
The cooking utensil assembly of claim 6 wherein said inner container has a radially outwardly directed flange emerging from the upper extremity of said lateral wall, and said inner container has a lateral wall which is continuous except for said venting passageway openings.
Claim 9
Dependent Claim
18 words
The cooking utensil assembly of claim 6 wherein said inner container has a lateral wall which is continuous.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |