US3868828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for preserving comestibles
Assignee: OVITRON RES CORP
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Filing: 1973-03-02
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Granted: 1975-03-04
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Expires: 1993-03-02
Abstract
Abstract Solid living comestibles such as fish are stored under pressure at below-0*C temperatures, in a substantially non-dilatable vessel. The environment for such storage is a coolant liquid such as seawater which is, of course, subjected continuously to the storage pressure but which is circulated through the vessel from a point outside the vessel. Thus, external to the vessel, means are provided for controlling the coolant temperature and pressure, and thereby also the environmental temperature and pressure of the stored comestibles within the vessel.
Inventors
- 👤 Ralph E Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:09
CPC Classifications
A; A23; A23B; A23B4/00; A23B4/06; A23B4/066; A23B2/00; A23B2/80; A23B2/805; F; F25; F25D; F25D17/00; F25D17/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
117 words
An apparatus for storing comestibles at reduced temperature and elevated pressure whereby the metabolic rate of said comestibles is lowered comprising a nondilatable comestible storage vessel, a heat exchange vessel, circulating means for causing a cooling liquid to circulate through said storage vessel and said heat exchange vessel without changing state, throttling valve means included in said circulating means connected to said storage vessel, thermostatic control means including a temperature sensitive probe for controlling said throttling valve, refrigeration means for causing a refrigerant to circulate through the heat exchange vessel, and pressurization means for supplying a pressurized gas to the heat exchange vessel whereby pressure is applied to the cooling liquid and transmitted to the storage vessel.
Claim 2
Independent Claim
117 words
An apparatus for storing comestibles at reduced temperature and elevated pressure whereby the metabolic rate of said comestibles is lowered comprising a nondilatable comestible storage vessel, a heat exchange vessel, circulating means for causing a cooling liquid to circulate through said storage vessel and said heat exchange vessel without changing state, throttling valve means included in said circulating means connected to said storage vessel, thermostatic control means including a temperature sensitive probe for controlling said throttling valve, refrigeration means for causing a refrigerant to circulate through the heat exchange vessel, and pressurization means for supplying a pressurized gas to the heat exchange vessel whereby pressure is applied to the cooling liquid and transmitted to the storage vessel.
Claim 3
Dependent Claim
17 words
The combination of claim 1, in which said probe is carried by part of said storage vessel.
Claim 4
Dependent Claim
14 words
The combination of claim 1, in which said circulating means includes a glandless pump.
Claim 5
Dependent Claim
32 words
The combination of claim 1, in which said storage vessel is cylindrical, witH a fixedly closed end and with a removable closure for the other end, said ports being at said ends.
Claim 6
Dependent Claim
38 words
The combination of claim 1, in which said storage vessel is cylindrical, with a fixedly closed end and with a removable closure for the other end; and strainer-basket means removably insertable in said vessel via the opened end.
Claim 7
Dependent Claim
24 words
The combination of claim 1, further comprising a flexible diaphram within the heat exchange vessel which separates the cooling liquid from the pressurized gas.
Claim 8
Dependent Claim
13 words
The combination of claim 1, further comprising water used as the cooling liquid.
Claim 9
Dependent Claim
14 words
The combination of claim 1, further comprising sea water used as the cooling liquid.
Claim 10
Dependent Claim
17 words
The combination of claim 1, further comprising strainer means substantially enshrouding an end of said storage vessel.
Claim 11
Dependent Claim
34 words
The combination of claim 1, wherein said circulation means comprises lines connecting said storage vessel and heat exchange vessel and a shunt connecting said lines on the heat exchange side of said throttling valve.
References Cited (Backward Citations)
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US2502527A
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US3007319A
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US3241328A
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US3607646A
Cited
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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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |