US4074108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Countertop display warmer
Assignee: Henny Penny Corp
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Filing: 1976-09-13
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Granted: 1978-02-14
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Expires: 1996-09-13
Abstract
Abstract An illuminated display warmer for displaying food products while maintaining them at proper serving temperature. The warmer includes glass front and sides, a base providing a flat heating surface, and a ceiling from which is suspended a radiant heater for warming the product in the warmer chamber. Separate convective air flow paths ventilate the warmer chamber and provide for a low external surface temperature. The warmer is particularly adapted to be mounted on a countertop. Recessing of a low profile base heater permits such mounting without danger of burning or scorching of the countertop.
Inventors
- 👤 James D. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:26
CPC Classifications
A; A47; A47J; A47J36/00; A47J36/24; A47J36/2483; A47J36/2488; H; H05; H05B; H05B3/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
A countertop display warmer comprising: transparent front and sides and an open rear, a base member having a concave outer bottom surface providing a first air space below said warmer, a ceiling member defining with said base member, said front, and said sides, a warmer chamber, a canopy mounted over said ceiling member defining a second air space therebetween, first heating means disposed in said first air space for heating said base member, second heating means in spaced relation to said ceiling for heating said warmer chamber, an opening along the lower edge of said front and the upper edge of said rear providing a generally upwardly and rearwardly directed ventilation path through said warmer chamber, and an opening along the lower edge of said canopy providing a second ventilation path through said second air space.
Claim 2
Dependent Claim
136 words
A countertop display warmer comprising: transparent front and sides and an open rear, a base member having a concave outer bottom surface providing a first air space below said warmer, a ceiling member defining with said base member, said front, and said sides, a warmer chamber, a canopy mounted over said ceiling member defining a second air space therebetween, first heating means disposed in said first air space for heating said base member, second heating means in spaced relation to said ceiling for heating said warmer chamber, an opening along the lower edge of said front and the upper edge of said rear providing a generally upwardly and rearwardly directed ventilation path through said warmer chamber, and an opening along the lower edge of said canopy providing a second ventilation path through said second air space.
Claim 3
Dependent Claim
21 words
The display warmer of claim 1 wherein said base member, said ceiling member, and said canopy are unitary, sheet metal elements.
Claim 4
Dependent Claim
16 words
The display warmer of claim 2 wherein said ceiling joins said front along a transverse edge.
Claim 5
Dependent Claim
25 words
The display warmer of claim 2 wherein said canopy is bent inwardly toward said ceiling member at its lower edge to form a V therein.
Claim 6
Dependent Claim
43 words
The display warmer of claim 1 wherein said warmer includes an upper, rear panel having a plurality of louvers therein, said ventilation path through said warmer chamber being in through said opening along the lower edge of said front and out said louvers.
Claim 7
Dependent Claim
30 words
The display warmer of claim 5 wherein said ceiling joins said front along a transverse edge of said ceiling and said rear along a transverse edge of said rear panel.
Claim 8
Dependent Claim
26 words
The display warmer of claim 1 wherein said ventilation path through said warmer chamber passes through the space between said second heating means and said ceiling.
Claim 9
Dependent Claim
180 words
A countertop display warmer comprising: a transparent, generally slanted front, transparent generally trapezoidal-shaped sides, and an open rear, a unitary, sheet metal base member having a concave outer bottom surface providing a first air space below said warmer, a unitary, sheet metal ceiling member having reflective inner surface defining with said base member, said front, and said sides a warmer chamber, a canopy mounted over said ceiling member defining a second air space therebetween and having a bottom edge extending around said warmer, means disposed in said first air space for heating said base member, said means comprising at least one electric heating element in heat exchange relation with the bottom surface of said base member and a heat insulating cover, second heating means in spaced relation to said warmer chamber, an opening along the lower edge of said front and the upper edge of said rear providing a generally upwardly and rearwardly directed ventilation path through said warmer chamber, and an opening along said bottom edge of said canopy providing a second ventilation path through said second air space.
Claim 10
Dependent Claim
180 words
A countertop display warmer comprising: a transparent, generally slanted front, transparent generally trapezoidal-shaped sides, and an open rear, a unitary, sheet metal base member having a concave outer bottom surface providing a first air space below said warmer, a unitary, sheet metal ceiling member having reflective inner surface defining with said base member, said front, and said sides a warmer chamber, a canopy mounted over said ceiling member defining a second air space therebetween and having a bottom edge extending around said warmer, means disposed in said first air space for heating said base member, said means comprising at least one electric heating element in heat exchange relation with the bottom surface of said base member and a heat insulating cover, second heating means in spaced relation to said warmer chamber, an opening along the lower edge of said front and the upper edge of said rear providing a generally upwardly and rearwardly directed ventilation path through said warmer chamber, and an opening along said bottom edge of said canopy providing a second ventilation path through said second air space.
Claim 11
Dependent Claim
52 words
The display warmer of claim 8 wherein said base member includes front and rear conduits defining with said base member said first air space and wherein at least said front conduit includes a plurality of openings in the front surface thereof to restrict the flow of heat from said base member thereto.
Claim 12
Dependent Claim
23 words
The display warmer of claim 8 wherein said second heating means comprises an electric radiant heater including a reflector and radiant heating element.
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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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |