US4493978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Serving dish with heating means
Assignee: Individual
•
Filing: 1983-07-11
•
Granted: 1985-01-15
•
Expires: 2003-07-11
Abstract
Abstract A serving dish having a heater, and a method for assembling the dish. An electric heater including a resistance element enclosed in a heat conducting and electrical insulating material is adhesively bonded against the bottom of a serving dish of ceramic or the like. Holes through the material covering the resistance element provide for electrical contact with the resistance element, and these holes are filled with solder. A bottom plate of stainless steel or other electrically conductive sheet is adhesively bonded over the heater, and the bottom plate is heated to melt the solder and cause the solder to fuse to the bottom plate. The entire bottom plate has its edges sealed by a silicone rubber sealant or the like to encapsulate the heater. The resulting dish has a bottom plate to give a neat appearance, the bottom acting as electrical contacts to energize the heater and heat the contents of the serving dish.
Inventors
- 👤 Roger A. Starnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:37
CPC Classifications
A; A47; A47J; A47J36/00; A47J36/24; A47J36/2483; A47J27/00; A47J27/004
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
169 words
A serving dish with heating means, said serving dish including a ceramic dish having a bottom, and a ridge surrounding said bottom, an electric heating element comprising an electric resistance element, electrically insulative material substantially covering said electric resistance element, said electrically insulative material defining holes therein for positioning electrical contact points for said electric resistance element, said electric heating element being disposed substantially against said bottom of said ceramic dish and generally coextensive therewith, a bottom plate substantially covering said heating element, said bottom plate comprising a pair of electrically conductive half-plates, said pair of half-plates being electrically separated from each other, each half-plate of said pair of half-plates being electrically connected to one contact point of said electrical contact points for said electric resistance element, adhesive means fixing said heating element to said bottom and for fixing said bottom plate to said heating element, and sealing means surrounding both said half-plates for sealing said bottom plate with respect to said serving dish for encapsulating said heating element.
Claim 2
Dependent Claim
169 words
A serving dish with heating means, said serving dish including a ceramic dish having a bottom, and a ridge surrounding said bottom, an electric heating element comprising an electric resistance element, electrically insulative material substantially covering said electric resistance element, said electrically insulative material defining holes therein for positioning electrical contact points for said electric resistance element, said electric heating element being disposed substantially against said bottom of said ceramic dish and generally coextensive therewith, a bottom plate substantially covering said heating element, said bottom plate comprising a pair of electrically conductive half-plates, said pair of half-plates being electrically separated from each other, each half-plate of said pair of half-plates being electrically connected to one contact point of said electrical contact points for said electric resistance element, adhesive means fixing said heating element to said bottom and for fixing said bottom plate to said heating element, and sealing means surrounding both said half-plates for sealing said bottom plate with respect to said serving dish for encapsulating said heating element.
Claim 3
Dependent Claim
43 words
A serving dish as claimed in claim 1, said sealing means extending from the edge of said bottom plate to said ridge, the arrangement being such that said heating element and said bottom plate are substantially received within the confines of said ridge.
Claim 4
Dependent Claim
47 words
A serving dish as claimed in claim 1, said bottom plate consisting of stainless steel, and further including a first quantity of solder connecting one half-plate to one electrical contact point, and a second quantity of solder connecting the other half-plate to the other electrical contact point.
References Cited (Backward Citations)
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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) | 1988-01-15 | 1988-07-16 | 1989-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-15 | 1992-07-16 | 1993-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-15 | 1996-07-16 | 1997-01-15 | $7700.00 | Window Closed / Lapsed |