Patent US2890540A successfully refreshed from Google Patents.
US4424798A
Expired / Lapsed
US
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Self-heatable container
Assignee: Individual
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Filing: 1982-05-28
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Granted: 1984-01-10
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Expires: 2002-05-28
Abstract
Abstract A self-heatable container including a container member having a bottom provided with a downwardly extending heat transfer projection, which projection itself has a downwardly opening recess. A cup-shaped member having an upwardly extending wall connected to the bottom of the container member has a base provided with an upwardly extending projection. The cup-shaped member also has holes to allow entry and exit of air. A fuel pellet is positioned in the recess and held therein by the upwardly extending projection of the cup-shaped member.
Inventors
- 👤 Hans-Dieter Volk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:50
CPC Classifications
A; A47; A47J; A47J36/00; A47J36/24; A47J36/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
A self-heatable container comprising: (a) a container member having a bottom provided with a downwardly extending heat-transfer projection, said projection having a downwardly opening recess; (b) a cup-shaped member having an upwardly extending wall connected to the bottom of said container member, said cup-shaped member having a base provided with an upwardly extending projection, said cup-shaped member further having holes to allow entry and exit of air; and (c) a fuel pellet positioned in said recess and held therein by the upwardly extending projection of said cup-shaped member.
Claim 2
Dependent Claim
88 words
A self-heatable container comprising: (a) a container member having a bottom provided with a downwardly extending heat-transfer projection, said projection having a downwardly opening recess; (b) a cup-shaped member having an upwardly extending wall connected to the bottom of said container member, said cup-shaped member having a base provided with an upwardly extending projection, said cup-shaped member further having holes to allow entry and exit of air; and (c) a fuel pellet positioned in said recess and held therein by the upwardly extending projection of said cup-shaped member.
Claim 3
Dependent Claim
100 words
A self-heatable container according to claim 1 wherein said holes include at least one entry hole at the bottom of the wall of said cup-shaped member below said fuel pellet and at least one exit hole at the top of the wall of said cup-shaped member at the level of said downwardly extending projection, said at least one entry hole being smaller than said at least one exit hole, whereby when said pellet is lit, air is drawn in through the at least one entry hole and exits through said at least one exit hole to create a chimney effect.
Claim 4
Dependent Claim
37 words
A self-heatable container according to claim 1 wherein said upwardly extending projection has an upper surface on which said pellet is positioned, and said pellet has a partially exposed undersurface when so positioned on said upper surface.
Claim 5
Dependent Claim
97 words
A self-heatable container according to claim 1 wherein said container member has a cylindrical wall joined to said bottom, said cylindrical wall has an outwardly protruding ring adjacent said bottom, the top of said upwardly extending wall of said cup-shaped member has an outwardly pointing flange, the bottom of said container member is positioned in said cup-shaped member so that said ring abuts said flange, and said container member is retained in said cup-shaped member by a radial force presented by said upwardly extending wall of said cup-shaped member against said cylindrical wall of said container member.
Claim 6
Dependent Claim
32 words
A self-heatable container according to claim 1 wherein said container member has a top and a cylindrical wall connecting said top and bottom, and said top is provided with a pull-tab opener.
Claim 7
Dependent Claim
32 words
A self-heatable container according to claim 5 wherein said cylindrical wall of said container member is provided with a series of beaded rings to increase resistance of said cylindrical wall against implosion.
Claim 8
Dependent Claim
45 words
A self-heatable container according to claim 1 further comprising a label wrapped around said container member, said label being constructed so that it can be removed in substantially one piece from said container member and replaced around said cup-shaped member to close off said holes.
Claim 9
Dependent Claim
61 words
A self-heatable container according to claim 1 wherein the base of said cup-shaped member forms a trough between said upwardly extending wall and said upwardly extending projection for the accumulation of moisture and at least one of said holes is provided below said fuel pellet to drain off water collected in said trough to prevent said fuel pellet from getting wet.
Claim 10
Dependent Claim
25 words
A self-heatable container according to claim 1 wherein said cup-shaped member is provided with a moisture proof protective coating which at least covers said holes.
Claim 11
Dependent Claim
43 words
A self-heatable container according to claim 1 wherein said upwardly extending projection in said cup-shaped member forms a space under said cup-shaped member, and further comprising at least one matchstick and moisture proof material molding said at least one matchstick into said space.
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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) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |