US4649263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating kettle
Assignee: GMI INDUSTRIES Inc AN IOWA CORP
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Filing: 1985-12-16
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Granted: 1987-03-10
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Expires: 2005-12-16
Abstract
Abstract A heating kettle includes a pot having a bottom wall and a side wall, a heating element adapted to heat the pot, and a hold-down plate for holding the heating element against the bottom wall of the pot. The hold-down plate is secured to both the bottom wall of the pot and to the side wall of the pot by a plurality of fasteners. Such plurality of fasteners securely sandwiches the heating element between the hold down plate and the bottom wall of the pot, thereby minimizing the deformation of the bottom wall of the pot and of the heating element during use of the kettle so as to increase the efficiency of the kettle.
Inventors
- 👤 John D. Goodlaxson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:18
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/004; A23; A23L; A23L7/00; A23L7/10; A23L7/161; A23L7/174; A23L7/183; A23L7/187
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
187 words
A heating kettle, comprising: a pot having a flat bottom wall and a side wall; a flat rigid disc ring heating element with a central hole, said heating element being in intimate contact with the pot bottom wall to heat said pot; a flat rigid nongrooved hold-down plate means for holding said heating element against said bottom wall of said pot; first fastener means on said side wall of said pot for compressively securing said hold-down means to said pot such that said heating element is securely sandwiched between said hold-down means and said bottom wall of said pot and thereby held in intimate contact with said bottom wall of said pot and said hold-down plate so as to minimize deformation of said bottom wall of said pot and of said heating element during use of said kettle, and second fastener means on said bottom wall of said pot extending through the central hole of the heating element for further securing said hold-down means to said pot such that said heating element is more securely sandwiched between said hold-down means and said bottom wall of said pot.
Claim 2
Dependent Claim
187 words
A heating kettle, comprising: a pot having a flat bottom wall and a side wall; a flat rigid disc ring heating element with a central hole, said heating element being in intimate contact with the pot bottom wall to heat said pot; a flat rigid nongrooved hold-down plate means for holding said heating element against said bottom wall of said pot; first fastener means on said side wall of said pot for compressively securing said hold-down means to said pot such that said heating element is securely sandwiched between said hold-down means and said bottom wall of said pot and thereby held in intimate contact with said bottom wall of said pot and said hold-down plate so as to minimize deformation of said bottom wall of said pot and of said heating element during use of said kettle, and second fastener means on said bottom wall of said pot extending through the central hole of the heating element for further securing said hold-down means to said pot such that said heating element is more securely sandwiched between said hold-down means and said bottom wall of said pot.
Claim 3
Dependent Claim
42 words
The kettle of claim 1 wherein said first fastener means includes a plurality of brackets mounted on the side wall of said pot and a plurality of bolts adapted to extend through said hold-down means and be threadably received by said brackets.
Claim 4
Dependent Claim
39 words
The kettle of claim 3 wherein said brackets are U-shaped and include a pair of opposite legs secured to said side wall of said pot and an interconnecting web having a threaded hole for receiving one of said bolts.
Claim 5
Dependent Claim
14 words
The kettle of claim 1 wherein said pot and said hold-down means are metal.
Claim 6
Dependent Claim
40 words
The kettle of claim 1 wherein said hold-down means is a plate substantially covering said heating element and said bottom wall of said pot and extending beyond said side wall of said pot for securement by said first fastening means.
Claim 7
Dependent Claim
12 words
The kettle of claim 1 wherein said kettle is for popping popcorn.
Claim 8
Dependent Claim
25 words
The kettle of claim 1 wherein said hold-down means is spaced from the bottom of the pot only by the thickness of said heating element.
References Cited (Backward Citations)
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US2605382A
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US2798931A
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US3662155A
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US3892945A
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Cited
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Cited
US4215267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |