US4144968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable food tray and container system
Assignee: Individual
•
Filing: 1978-06-26
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Granted: 1979-03-20
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Expires: 1998-06-26
Abstract
Abstract A disposable food tray and container system formed of at least a pair of container elements generally having an overall circular contour. The container elements include a central substantially planar member joined in one-piece formation to a rim element extending around the periphery of the planar section. The rim element has upper and lower elements with discrete apertures formed therethrough. The upper and lower rim elements are matingly interfaceable in order to provide a box-like structure. Upper and lower apertures may be aligned in a varying manner by slidable rotation of one element on another subsequent to the nesting interfacing and locking construction. By providing varying sizes of through openings determined by the position of the upper and lower apertures, the venting of vapors contained within the system may be adjusted as to the rate of dispersal to the environment. The upper and lower elements or sections of the rim element includes bead or lug members on an upper surface and a recess formed within a lower surface. The bead or lug members of one rim element are insertable within the recess of a second rim element to provide the nesting interface when the system is used as a box-like container. When the container elements are utilized alone, they may be used as a tray for consuming edible material at the site of a commercial establishment. When used as a box-like structure, the system may be used to transport material contained therein to a remote site.
Inventors
- 👤 Kenneth Shelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:56
CPC Classifications
B; B65; B65D; B65D21/00; B65D21/02; B65D21/0209; B65D21/0213
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
129 words
A disposable food tray and container system, comprising: at least a pair of container elements, each of said container elements having a central substantially planar section and a rim element, each of said rim elements extending around said planar section in a closed contour, each of said rim elements having a pair of upper and lower cooperating elements for nesting interface of one of said upper cooperating elements of one of said container elements with said lower cooperating element of a next one of said container elements, each of said upper and lower cooperating elements having at least one aperture formed therethrough, said apertures being alignable for permitting exit of gaseous products when said upper and lower cooperating elements of said pair of container elements are in nesting interface.
Claim 2
Dependent Claim
129 words
A disposable food tray and container system, comprising: at least a pair of container elements, each of said container elements having a central substantially planar section and a rim element, each of said rim elements extending around said planar section in a closed contour, each of said rim elements having a pair of upper and lower cooperating elements for nesting interface of one of said upper cooperating elements of one of said container elements with said lower cooperating element of a next one of said container elements, each of said upper and lower cooperating elements having at least one aperture formed therethrough, said apertures being alignable for permitting exit of gaseous products when said upper and lower cooperating elements of said pair of container elements are in nesting interface.
Claim 3
Dependent Claim
35 words
The disposable food tray and container system as recited in claim 1 where each of said container elements are circular in contour when taken with respect to a cross-sectional plane normal to a vertical direction.
Claim 4
Dependent Claim
39 words
The disposable food tray and container system as recited in claim 2 where said container elements are in rotatable slidable contact each with respect to the other when said pair of container elements are in said nesting interface relationship.
Claim 5
Dependent Claim
39 words
The disposable food tray and container system as recited in claim 3 where each of said apertures extend throughout a predetermined segment of said circular contour for varying the size of a through opening when said apertures are aligned.
Claim 6
Dependent Claim
53 words
The disposable food tray and container system as recited in claim 4 where said upper cooperating element includes a lug member having at least one of aid apertures extending therethrough, said lower cooperating element having a recess formed therein for insert of an interfacing lug member of a next successively mounted container element.
Claim 7
Dependent Claim
60 words
The disposable food tray and container system as recited in claim 5 where said lug member is joined in one piece formation to said upper cooperating element, said lug member being arcuate in contour, said recess formed through said lower cooperating element being similar in contour when taken with respect to said lug member and being intercepted by said apertures.
Claim 8
Dependent Claim
24 words
The disposable food tray and container system as recited in claim 5 where said lug member and said recess are rectangular in cross-sectional contour.
Claim 9
Dependent Claim
53 words
The disposable food tray and container system as recited in claim 5 where said lug member and said recess include a first portion being rectangular in cross-sectional contour and a second portion having tapered wall segments for cooperating interface between a lug member and a recess formed within a next succeeding container element.
Claim 10
Dependent Claim
43 words
The disposable food tray and container system as recited in claim 5 where said upper cooperating element and lower cooperating element are displaced radially each from the other, each of said cooperating elements being joined to said planar section in one piece formation.
Claim 11
Dependent Claim
45 words
The disposable food tray and container system as recited in claim 9 where said upper and lower cooperating elements are radially displaced each from the other by a distance such that a lower cooperating element outer surface slidingly interfaces with an upper cooperating inner surface.
Claim 12
Dependent Claim
26 words
The disposable food tray and container system as recited in claim 1 where said container element planar section and rim element are formed in one-piece formation.
Claim 13
Dependent Claim
23 words
The disposable food tray and container system as recited in claim 11 where each of said container elements are molded in one-piece formation.
Claim 14
Dependent Claim
43 words
The disposable food tray and container system as recited in claim 1 where said lower cooperating element extends below a lower surface of said substantially planar section for maintaining said planar section remote from a base surface contiguous to said lower cooperating element.
Claim 15
Dependent Claim
37 words
The disposable food tray and container system as recited in claim 1 where said container elements are formed of a material having a low thermal conductivity for maintaining thermal insulation of food contained within said container elements.
Claim 16
Dependent Claim
24 words
The disposable food tray and container system as recited in claim 14 where each of said container elements is formed of a styrofoam material.
Claim 17
Dependent Claim
24 words
The disposable food tray and container system as recited in claim 14 where each of said container elements is formed of a cardboard material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |