US3806618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heating a package of food
Assignee: Robalex Inc
•
Filing: 1972-08-01
•
Granted: 1974-04-23
•
Expires: 1992-08-01
Abstract
Abstract The method provides for heating a food package by boiling wherein between the lid and the tray a liquid-tight mechanical connection is provided, plus a gas-tight meltable seal. In heating under water the seal melts and allows the escape of steam from the interior while the mechanical connection maintains the interior free of indrawn water.
Inventors
- 👤 R Bemiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:41
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/10; B65D77/20; B65D77/2004; B65D77/2012; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2041; B65D2577/205; B65D2577/2075; B65D2577/2091
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
142 words
A method of heating a package of food in boiling liquid which comprises providing a tray, placing moisture containing food in said tray, providing a lid for said tray, forming a mechanical interlocked connection between an overlapped portion of said lid about a periphery of said tray about substantially the entire peripheries thereof which is water-proof in character thereby forming a package, providing a meltable seal for said mechanical connection about substantially the entire mecHanical connection which is of a gas-tight character, heating the package in said liquid to cause melting of the gas-tight seal between the tray and the lid while retaining the mechanical connection therebetween, and passing the steam from the contents of the package to the outside through an area contiguous a nonoverlapped portion of the lid and the tray periphery while barring entry of liquid into the package.
Claim 2
Independent Claim
142 words
A method of heating a package of food in boiling liquid which comprises providing a tray, placing moisture containing food in said tray, providing a lid for said tray, forming a mechanical interlocked connection between an overlapped portion of said lid about a periphery of said tray about substantially the entire peripheries thereof which is water-proof in character thereby forming a package, providing a meltable seal for said mechanical connection about substantially the entire mecHanical connection which is of a gas-tight character, heating the package in said liquid to cause melting of the gas-tight seal between the tray and the lid while retaining the mechanical connection therebetween, and passing the steam from the contents of the package to the outside through an area contiguous a nonoverlapped portion of the lid and the tray periphery while barring entry of liquid into the package.
Claim 3
Dependent Claim
32 words
The method as defined in claim 1 including the step of locating the meltable seal in an area bounded by said overlapped portion and a free terminal edge of said tray periphery.
Claim 4
Dependent Claim
23 words
The method as defined in claim 2 wherein said package includes at least a single corner and said non-overlapped portion is located thereat.
Claim 5
Dependent Claim
15 words
The method as defined in claim 2 wherein said lid periphery is a horizontal flange.
Claim 6
Dependent Claim
22 words
The method as defined in claim 2 wherein the meltable seal is further located in the area of said non-overlapped lid portion.
Claim 7
Dependent Claim
15 words
The method as defined in claim 5 wherein said lid periphery is a horizontal flange.
Claim 8
Dependent Claim
23 words
The method as defined in claim 5 wherein said package includes at least a single corner and said non-overlapped portion is located thereat.
Claim 9
Dependent Claim
15 words
The method as defined in claim 7 wherein said lid periphery is a horizontal flange.
Claim 10
Dependent Claim
32 words
The method as defined in claim 8 wherein said lid is coated with polymeric sealing material and said horizontal flange has against its opposite surfaces said polymeric sealing material of the lid.
References Cited (Backward Citations)
US2633284A
Cited
US3052554A
Cited
US3366309A
Cited
US3580478A
Cited
US3671270A
Cited
US3716370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |