US3636726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cooling containers
Assignee: Individual
•
Filing: 1969-08-26
•
Granted: 1972-01-25
•
Expires: 1989-08-26
Abstract
Abstract A container of beverage is conveniently cooled by the provision of a small reservoir of a compressed nontoxic gas or nontoxic liquid in the interior of the beverage. The beverage is rapidly cooled when the gas is allowed to escape from the reservoir through a throttle, the device being generally in the form of a flat plate in the interior of the beverage.
Inventors
- 👤 Nathan Rosenfeld
- 👤 Stuart Frederick Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:44
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/10; F25D3/107; F25D2331/00; F25D2331/80; F25D2331/805
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
88 words
A self-cooling container for beverages comprising: a main vessel, an auxiliary vessel situated in the interior of the main vessel, perforable means connecting an outer wall of the main vessel to the auxiliary vessel, said auxiliary vessel comprising a reservoir, a flat plate of a heat-conductive metal integral with said reservoir and an elongated tube in the interior of the flat plate connecting the reservoir to the perforable means, said reservoir containing compressed nontoxic gas or a nontoxic liquid which boils vigorously at ambient temperature and standard pressure.
Claim 2
Dependent Claim
88 words
A self-cooling container for beverages comprising: a main vessel, an auxiliary vessel situated in the interior of the main vessel, perforable means connecting an outer wall of the main vessel to the auxiliary vessel, said auxiliary vessel comprising a reservoir, a flat plate of a heat-conductive metal integral with said reservoir and an elongated tube in the interior of the flat plate connecting the reservoir to the perforable means, said reservoir containing compressed nontoxic gas or a nontoxic liquid which boils vigorously at ambient temperature and standard pressure.
Claim 3
Dependent Claim
25 words
A self-cooling container as claimed in claim 1, wherein the flat plate is elongated in the direction of the greatest dimension of the main vessel.
Claim 4
Dependent Claim
23 words
A self-cooling container as claimed in claim 2, wherein the elongated tube forms a zigzag pattern in the interior of the flat plate.
Claim 5
Dependent Claim
22 words
A self-cooling container as claimed in claim 3, further including a release valve or throttle connecting the reservoir to the elongated tube.
Claim 6
Dependent Claim
21 words
A self-cooling container as claimed in claim 4, wherein a channel or fins are provided at the edge of the plate.
Claim 7
Dependent Claim
19 words
A self-cooling container as claimed in claim 4, wherein the compressed nontoxic gas or nontoxic liquid is a chlorofluoro-hydrocarbon.
Claim 8
Dependent Claim
30 words
A self-cooling container as claimed in claim 6, wherein the amount of chlorofluoro-hydrocarbon is sufficient to reduce the temperature of the beverage in the main vessel to about 40* F.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |