Patent US4386703A successfully refreshed from Google Patents.
US4386703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food service tray
Assignee: Bank of America NA
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Filing: 1977-12-15
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Granted: 1983-06-07
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Expires: 1997-12-15
Abstract
Abstract A serving tray for use in a food rethermalizing cabinet. The tray is sectioned by a thermal divider and formed so that dishes of food placed therein can be selectively heated or cooled by separate air streams flowing from one end of the tray to the other. The thermal divider extends from one side of the tray to the other separating the tray interior into two channels. Inlet and outlet ports are provided at opposite ends of each channel. Tapered connectors on the sides of the tray are designed to mate with matching tapered sections in the cabinet such that when the tray is firmly seated in the cabinet, a fluid tight seal exists between the mating connector members. The inlet and outlet ports for each channel are precisely aligned with corresponding ports in the cabinet and the tray is supported thereby in the cabinet and cannot be inserted in reverse orientation.
Inventors
- 👤 William W. Thompson
- 👤 Samuel L. Belcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:00
CPC Classifications
A; A47; A47J; A47J39/00; A47J39/006; A47B; A47B31/00; A47B31/02; A47B2031/026
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
209 words
An improved food-serving and storage tray for use in a cabinet, said tray comprising a generally planar bottom, an upstanding perimetric wall with front, rear and end wall sections, a thermal divider extending from one of said end wall sections to the opposite end wall section, defining with said walls two separate parallel thermalizing air channels, one on each side of said divider, a top having a plurality of dish-receiving apertures, said receiving apertures opening into said channels and being designed to hold food dishes in sealing conformity therein with a substantial portion of each dish protruding downwardly into its respective air channel, and a pair of oblong apertures through each of said end wall sections, each one of said pair opening into its respective one of such channels with the apertures of a channel being in directly confronting alignment with one another so the mass flow of air is in one direction through a channel, each of said end walls having a tapered wedge connector member formed therein encompassing said pair of oblong apertures, said connector extending from said front wall section to said rear wall section and being uniformly tapered from a smaller diameter at the rear end thereof to a larger diameter at the front end.
Claim 2
Dependent Claim
209 words
An improved food-serving and storage tray for use in a cabinet, said tray comprising a generally planar bottom, an upstanding perimetric wall with front, rear and end wall sections, a thermal divider extending from one of said end wall sections to the opposite end wall section, defining with said walls two separate parallel thermalizing air channels, one on each side of said divider, a top having a plurality of dish-receiving apertures, said receiving apertures opening into said channels and being designed to hold food dishes in sealing conformity therein with a substantial portion of each dish protruding downwardly into its respective air channel, and a pair of oblong apertures through each of said end wall sections, each one of said pair opening into its respective one of such channels with the apertures of a channel being in directly confronting alignment with one another so the mass flow of air is in one direction through a channel, each of said end walls having a tapered wedge connector member formed therein encompassing said pair of oblong apertures, said connector extending from said front wall section to said rear wall section and being uniformly tapered from a smaller diameter at the rear end thereof to a larger diameter at the front end.
Claim 3
Dependent Claim
125 words
An improved food-serving and storage tray for use in a thermalizing cabinet, said tray comprising a generally planar bottom, an upstanding perimetric wall with front, rear and end wall sections, a thermal divider extending from one of said end wall sections to the opposite end wall section to form a channel on each side of said divider, a top having a plurality of dish-receiving apertures, opening into said channels, said receiving apertures being designed to hold food dishes in sealing conformity therein with a substantial portion of each dish protruding downwardly into its respective channel, wedge-type tapered connecting members extending from the front to the back of each end wall, and a pair of oblong apertures through each of said member opening into corresponding channels.
Claim 4
Dependent Claim
125 words
An improved food-serving and storage tray for use in a thermalizing cabinet, said tray comprising a generally planar bottom, an upstanding perimetric wall with front, rear and end wall sections, a thermal divider extending from one of said end wall sections to the opposite end wall section to form a channel on each side of said divider, a top having a plurality of dish-receiving apertures, opening into said channels, said receiving apertures being designed to hold food dishes in sealing conformity therein with a substantial portion of each dish protruding downwardly into its respective channel, wedge-type tapered connecting members extending from the front to the back of each end wall, and a pair of oblong apertures through each of said member opening into corresponding channels.
Claim 5
Dependent Claim
27 words
An improved food-serving and storage tray according to claim 2 wherein said members are tapered from a larger dimension to a smaller dimension in a rearward direction.
Claim 6
Dependent Claim
22 words
A tray according to claim 2 wherein bluff body projections extend upwardly from the bottom of the tray under the dish-receiving apertures.
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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) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |