Patent US3653372A successfully refreshed from Google Patents.
US3653372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemically heated container
Assignee: Individual
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Filing: 1969-12-12
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Granted: 1972-04-04
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Expires: 1989-12-12
Abstract
Abstract A chemically heated stove having a heating chamber containing a solid chemical reactant and a frangible capsule containing another chemical reactant, and a pressure actuator member, such as a lever or thumb-screw, mounted on the container for breaking the capsule upon the application of pressure to cause the chemical reactants to mix in an exothermic reaction. In a preferred form of the invention, the stove is made integral with the bottom of a comestible container, and the walls are insulated, not only to make the heating of the comestible more efficient, but to protect the hand of the person holding the container.
Inventors
- 👤 Beverly Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:21
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3484; A; A47; A47J; A47J36/00; A47J36/24; A47J36/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
37 words
The invention according to claim 1 in which said pressure-actuated member comprises a threaded member, and means threadedly supporting said threaded member so that when said threaded member is turned, said wall is moved against said capsule.
Claim 2
Dependent Claim
28 words
The invention according to claim 2 in which said means threadedly supporting said threaded member comprises a rigid member fixed to said heating chamber and spanning said wall.
Claim 3
Dependent Claim
12 words
The invention according to claim 1 in which said wall is flexIble.
Claim 4
Dependent Claim
23 words
The invention according to claim 4 in which said flexible wall has annular ribs to permit expansion of said wall against said capsule.
Claim 5
Dependent Claim
32 words
The invention according to claim 1 in which said article supporting means comprises a comestible container integrally constructed with and forming the upper part of said heating chamber, and having insulated walls.
Claim 6
Dependent Claim
26 words
The invention according to claim 1 in which said first chemical reactant and said second chemical reactant are adapted to produce non-gaseous, neutral products of reaction.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |