US3934748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cookware containers
Assignee: Individual
•
Filing: 1974-08-19
•
Granted: 1976-01-27
•
Expires: 1994-08-19
Abstract
Abstract The container of a cookware unit includes a cartridge member and a replaceable infix member, both of which are of substantially the same configuration and in which the infix member is removably positioned in the cavity of the cartridge member. A non-stick coating coats the interior of the infix member and the infix and cartridge members are removably fastened together into an integral unit. Heat diffusion means may also be located between the cartridge and the infix member to distribute the heat which is applied to the container.
Inventors
- 👤 Nick S. Racz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:52
CPC Classifications
A; A47; A47J; A47J36/00; A47J36/02; A47J36/022; Y; Y10; Y10S; Y10S220/00; Y10S220/912
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
292 words
In a cookware unit including a container, said container comprising: durable heat conductive cartridge means having heat conductive walls arranged in a predetermined configuration defining a cavity therein which is liquid-free, said walls conducting heat from a heat source to said liquid free cavity, infix means also having walls arranged in substantially the same said predetermined configuration and sealingly positioned in the cavity of said cartridge means, said infix means walls also being heat conductive and defining a cavity therein for receipt of the food which is to be prepared in said container, said walls conducting heat to the food from said liquid-free cavity of said cartridge means, the walls of said cartridge means and said infix means being substantially dissimilar in at least one of composition and thickness such that the strength of said cartridge means is substantially greater than the strength of said infix means, and a heat bonded non-stick coating suited for food contact on said infix means coating the food contacting surfaces of said infix means cavity, and fastening means attaching said infix means into said liquid free cavity of said cartridge means to thereby define an integral container at all times during cooking use and cleaning of said container, said fastening means together with the walls of said cartridge means and infix means defining sealing means to prevent the passage of matter to and from said liquid free cavity of said cartridge means at all times during cleaning and cooking use of the container, but allowing said durable cartridge means and infix means to be separated when said container is not in use for replacement of said non-stick coated infix means with new infix means when the non-stick coating of said non-stick coated infix means has deteriorated.
Claim 2
Dependent Claim
292 words
In a cookware unit including a container, said container comprising: durable heat conductive cartridge means having heat conductive walls arranged in a predetermined configuration defining a cavity therein which is liquid-free, said walls conducting heat from a heat source to said liquid free cavity, infix means also having walls arranged in substantially the same said predetermined configuration and sealingly positioned in the cavity of said cartridge means, said infix means walls also being heat conductive and defining a cavity therein for receipt of the food which is to be prepared in said container, said walls conducting heat to the food from said liquid-free cavity of said cartridge means, the walls of said cartridge means and said infix means being substantially dissimilar in at least one of composition and thickness such that the strength of said cartridge means is substantially greater than the strength of said infix means, and a heat bonded non-stick coating suited for food contact on said infix means coating the food contacting surfaces of said infix means cavity, and fastening means attaching said infix means into said liquid free cavity of said cartridge means to thereby define an integral container at all times during cooking use and cleaning of said container, said fastening means together with the walls of said cartridge means and infix means defining sealing means to prevent the passage of matter to and from said liquid free cavity of said cartridge means at all times during cleaning and cooking use of the container, but allowing said durable cartridge means and infix means to be separated when said container is not in use for replacement of said non-stick coated infix means with new infix means when the non-stick coating of said non-stick coated infix means has deteriorated.
Claim 3
Dependent Claim
24 words
In the cookware unit of claim 1 wherein said cartridge means and infix means are spaced from each other to define a gap therebetween.
Claim 4
Dependent Claim
47 words
In the cookware unit of claim 2 wherein said cartridge means and infix means each include a bottom wall and a side wall extending upward from said bottom wall and said gap is located between the bottom wall of said cartridge means and said infix means, respectively.
Claim 5
Dependent Claim
22 words
In the cookware unit of claim 3 including plate means positioned in the gap between and in contact with said bottom walls.
Claim 6
Dependent Claim
15 words
In the cookware unit of claim 4 wherein said plate means is a ferrous metal.
Claim 7
Dependent Claim
19 words
In the cookware unit of claim 2 wherein at least a portion of said gap comprises a void space.
Claim 8
Dependent Claim
41 words
In the cookware unit of claim 2 wherein said cartridge means and infix means each include a bottom wall and a side wall extending upward from said bottom wall, and said gap is located between both said bottom and side walls.
Claim 9
Dependent Claim
22 words
In the cookware unit of claim 7 wherein the thickness of said gap differs between said bottom walls and said side walls.
Claim 10
Dependent Claim
21 words
In the cookware unit of claim 1 wherein said infix means is aluminum and said coating is a non-stick fluorinated hydrocarbon.
Claim 11
Dependent Claim
15 words
In the cookware unit of claim 9 wherein said cartridge means is a ferrous metal.
Claim 12
Dependent Claim
18 words
In the cookware unit of claim 1 including stud means welded to the exterior of said cartridge means.
Claim 13
Dependent Claim
20 words
In the cookware unit of claim 11 in which said cartridge means and said stud means are a ferrous metal.
Claim 14
Dependent Claim
26 words
In the cookware unit of claim 1 wherein said cartridge means is a ferrous metal and a decorative coating coats the exterior of said cartridge means.
Claim 15
Dependent Claim
69 words
In the cookware unit of claim 1 wherein said cartridge means is a ferrous metal, said infix means is aluminum and said coating is a fluorinated hydrocarbon, said cartridge means and infix means each include a bottom wall and a side wall, the bottom walls of said cartridge means and infix means being spaced from each other to define a gap therebetween, and heat diffusing means in said gap.
Claim 16
Dependent Claim
42 words
In the cookware unit of claim 14 wherein said heat diffusing means comprises a ferrous metal plate of substantially the same size as said bottom walls fixed to the bottom wall of said cartridge means, said infix means resting on said plate.
Claim 17
Dependent Claim
22 words
In the cookware unit of claim 14 wherein said side walls are also spaced from each other to define a gap therebetween.
Claim 18
Dependent Claim
14 words
In the cookware unit of claim 16 wherein said gaps are of differing thickness.
Claim 19
Dependent Claim
29 words
In the cookware unit of claim 1 including handle attachment means having a head thereon, said head being located in a gap between said cartridge means and infix means.
Claim 20
Dependent Claim
20 words
In the cookware unit of claim 1 including handle flame protecting and supporting means formed integrally from said cartridge means.
Claim 21
Dependent Claim
13 words
In the cookware unit of claim 1 wherein said infix means is non-metallic.
Claim 22
Dependent Claim
13 words
In the cookware unit of claim 20 wherein said infix means is fiberglass.
Claim 23
Dependent Claim
13 words
In the cookware unit of claim 1 wherein said cartridge means is non-metallic.
Claim 24
Dependent Claim
14 words
In the cookware unit of claim 22 wherein said cartridge means is a ceramic.
Claim 25
Dependent Claim
15 words
In the cookware unit of claim 1 wherein said durable cartridge means is carbon steel.
Claim 26
Dependent Claim
16 words
In the cookware unit of claim 1 wherein said infix means is aluminum or alloys thereof.
Claim 27
Dependent Claim
24 words
In the cookware unit of claim 1 wherein said durable cartridge means is metal, and a porcelain enamel coating coated on the exterior thereof.
Claim 28
Dependent Claim
15 words
In the cookware unit of claim 1 wherein said durable cartridge means is stainless steel.
Claim 29
Dependent Claim
28 words
In the cookware unit of claim 1 wherein said durable cartridge means is aluminum or alloys thereof of substantially greater thickness than the thickness of said infix means.
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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) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |