US3670916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food containerization
Assignee: Individual
•
Filing: 1970-02-19
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Granted: 1972-06-20
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Expires: 1990-02-19
Abstract
Abstract An insulated food container is provided having an outer vessel formed at least in part of heat-resistant material and having sides which terminate in a peripheral rim portion with an inwardly disposed peripheral ledge. An inner vessel adapted to hold the food has a peripheral flange which rests on the ledge of the outer vessel and positions the inner vessel inwardly with respect to the outer vessel to define an insulating air space therebetween. A protective annular ring fabricated from material of higher heat distortion resistance than the outer vessel is disposed on the peripheral ledge of the outer vessel beneath the flange of the inner vessel. The container is closed by a lid having suitable means to sealably engage the rim portion of the outer vessel and has a conically shaped portion, the vertex of which is fracturable under high internal pressure to provide relief of the vapor pressure that may accumulate within the container.
Inventors
- 👤 Arnold L Alpert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:16
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/38; B65D81/3825; B65D81/3827; B65D81/3813; B65D81/3818; Y; Y10; Y10S; Y10S220/00; Y10S220/902
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
131 words
A multi-component insulated food container comprising an outer vessel formed at least in part of heat-insulating material and having sides which terminate in an upstanding annular flange and an inwardly disposed peripheral ledge; an inner vessel for holding the food having a peripheral radially outwardly extending flange adapted to rest on the ledge of said outer vessel, said inner vessel being inwardly spaced from the outer vessel and defining an insulative air space therebetween; and a lid to close the container having a pair of spaced annular flanges at the periphery thereof adapted to sealably engage therebetween the upstanding annular flange of the outer vessel, said lid having a conically shaped inner surface, the vertex of which is fracturable to provide relief of vapor pressure that may accumulate within the container.
Claim 2
Dependent Claim
131 words
A multi-component insulated food container comprising an outer vessel formed at least in part of heat-insulating material and having sides which terminate in an upstanding annular flange and an inwardly disposed peripheral ledge; an inner vessel for holding the food having a peripheral radially outwardly extending flange adapted to rest on the ledge of said outer vessel, said inner vessel being inwardly spaced from the outer vessel and defining an insulative air space therebetween; and a lid to close the container having a pair of spaced annular flanges at the periphery thereof adapted to sealably engage therebetween the upstanding annular flange of the outer vessel, said lid having a conically shaped inner surface, the vertex of which is fracturable to provide relief of vapor pressure that may accumulate within the container.
Claim 3
Dependent Claim
46 words
An insulated food container according to claim 1, in which the outer vessel comprises inner and outer components formed of material having different heat insulating values, the resistance of the outer component being greater than the heat insulating value of the material of the inner component.
Claim 4
Dependent Claim
44 words
An insulated food container according to claim 1, further comprising an annular insulating ring formed of material having a higher heat distortion resistance than the outer vessel, and disposed on the ledge of said outer vessel to support the flange of the inner vessel.
Claim 5
Dependent Claim
48 words
An insulated food container according to claim 3, in which the annular ring has an L-shaped radial cross section the upstanding portion of which is adapted to center the inner vessel within the outer vessel with the inner vessel flange resting upon the horizoNtal portion of said ring.
Claim 6
Dependent Claim
172 words
A multiple component insulated food container comprising an outer vessel having inner and outer components formed of material having different heat insulating values, the heat insulating value of the material of the outer component being greater than that of the material of the inner component, said outer vessel terminating in a rim portion having an inwardly disposed peripheral ledge; an annular ring formed of higher heat distortion resistant material than the outer vessel disposed on said peripheral radially outwardly extending ledge; an inner vessel having a peripheral flange with at least one aperture therethrough adapted to rest on said annular ring, said inner vessel being inwardly spaced from the inner component of the outer vessel to define an air space therebetween; and a lid to close the container having means adapted to sealably engage the rim portion of the outer vessel, and having a conically shaped portion inner surface, the vertex of which is fracturable to provide relief of vapor pressure that may accumulate within the inner vessel and the air space.
Claim 7
Dependent Claim
172 words
A multiple component insulated food container comprising an outer vessel having inner and outer components formed of material having different heat insulating values, the heat insulating value of the material of the outer component being greater than that of the material of the inner component, said outer vessel terminating in a rim portion having an inwardly disposed peripheral ledge; an annular ring formed of higher heat distortion resistant material than the outer vessel disposed on said peripheral radially outwardly extending ledge; an inner vessel having a peripheral flange with at least one aperture therethrough adapted to rest on said annular ring, said inner vessel being inwardly spaced from the inner component of the outer vessel to define an air space therebetween; and a lid to close the container having means adapted to sealably engage the rim portion of the outer vessel, and having a conically shaped portion inner surface, the vertex of which is fracturable to provide relief of vapor pressure that may accumulate within the inner vessel and the air space.
Claim 8
Dependent Claim
129 words
An insulated food container comprising an outer vessel formed at least in part of heat insulating material, and having sides which terminate in a peripheral rim portion having an upstanding annular flange and an inwardly disposed peripheral ledge; an inner vessel for holding the food having a peripheral radially outwardly extending flange adapted to rest on the ledge of said outer vessel, said inner vessel being inwardly spaced from the outer vessel and defining an air space therebetween; and a lid to close the container having a pair of spaced annular flanges adapted to sealably engage therebetween the upstanding annular flange of the outer vessel, and having normally closed internal pressure relieving means, which is operable to provide relief of high vapor pressure that may accumulate within the container.
Claim 9
Dependent Claim
129 words
An insulated food container comprising an outer vessel formed at least in part of heat insulating material, and having sides which terminate in a peripheral rim portion having an upstanding annular flange and an inwardly disposed peripheral ledge; an inner vessel for holding the food having a peripheral radially outwardly extending flange adapted to rest on the ledge of said outer vessel, said inner vessel being inwardly spaced from the outer vessel and defining an air space therebetween; and a lid to close the container having a pair of spaced annular flanges adapted to sealably engage therebetween the upstanding annular flange of the outer vessel, and having normally closed internal pressure relieving means, which is operable to provide relief of high vapor pressure that may accumulate within the container.
Claim 10
Dependent Claim
33 words
An insulated food container according to claim 6, in which the pressure relieving means on said lid comprises a conically shaped inner surface having a vertex which is fracturable under high internal pressure.
Claim 11
Dependent Claim
31 words
An insulated food container according to claim 7, in which the conically shaped inner surface of the lid has a tapered cross-section which is thinnest in the area of the vertex.
Claim 12
Dependent Claim
140 words
An insulated food container comprising an outer vessel formed at least in part of heat insulating material, and having sides which terminate in a peripheral rim portion with an inwardly disposed peripheral ledge; an annular ring formed of material having higher heat distortion resistant characteristics than the outer vessel disposed on the peripheral ledge of the outer vessel; an inner vessel for holding the food having a peripheral radially outwardly extending flange adapted to rest on said annular ring, said inner vessel being inwardly spaced from the outer vessel and defining an air space therebetween; and a lid to close the container having means adapted to sealably engage the rim portion of the outer vessel, and having normally closed internal pressure relieving means, which is operable to provide relief of high vapor pressure that may accumulate within the sealed container.
Claim 13
Dependent Claim
140 words
An insulated food container comprising an outer vessel formed at least in part of heat insulating material, and having sides which terminate in a peripheral rim portion with an inwardly disposed peripheral ledge; an annular ring formed of material having higher heat distortion resistant characteristics than the outer vessel disposed on the peripheral ledge of the outer vessel; an inner vessel for holding the food having a peripheral radially outwardly extending flange adapted to rest on said annular ring, said inner vessel being inwardly spaced from the outer vessel and defining an air space therebetween; and a lid to close the container having means adapted to sealably engage the rim portion of the outer vessel, and having normally closed internal pressure relieving means, which is operable to provide relief of high vapor pressure that may accumulate within the sealed container.
References Cited (Backward Citations)
US1300712A
Cited
FR798818A
Cited
US2190827A
Cited
US2369765A
Cited
US2436097A
Cited
US2507425A
Cited
US2726002A
Cited
US2885107A
Cited
US3025947A
Cited
US3051582A
Cited
US3130288A
Cited
CH478553A
Cited
US3484015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |