US3866436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling container
Assignee: Burger Eisenwerke AG
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Filing: 1973-06-04
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Granted: 1975-02-18
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Expires: 1993-06-04
Abstract
Abstract A transportable refrigerating container including descending passage means operable to receive a gravity induced flow of coolant gas and having flow controlling aperture means providing individualized, controlled communication between the descending passage means and individual product compartments. The passage means comprises a plurality of individual passages located along each of two sides of the refrigerated compartment. Longer passages have a greater flow capacity or cross sectional area than shorter passages.
Inventors
- 👤 Karl Frank
- 👤 Martin A Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:31
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/12; F25D3/125; F25D17/00; F25D17/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
170 words
In a transportable cooling container for keeping temperaturesensitive products cool and having a work space for chilled products having a plurality of vertically displaced product compartments, and a coolant compartment above said work space operable to contain a gasifiable coolant, the improvement in said container comprising: a pair of side walls operable to extend longitudinally of a direction of transportation and transversely of an axis of tilting of said container likely to occur during said transportation; and a plurality of descending passages located along each of said longitudinally extending side walls, communicating with said coolant compartment and operable to receive a gravity flow of gasified coolant therefrom, and further communicating with diverse ones of said product compartments; said descending passages being dimensioned such that the flow capacity of the descending passages of each side increases progressively so as to conduct to said product compartments a progressively greater flow of cooling gas relative to a downward direction of reference in a manner maintaining the temperatures of said product compartments substantially uniform.
Claim 2
Dependent Claim
170 words
In a transportable cooling container for keeping temperaturesensitive products cool and having a work space for chilled products having a plurality of vertically displaced product compartments, and a coolant compartment above said work space operable to contain a gasifiable coolant, the improvement in said container comprising: a pair of side walls operable to extend longitudinally of a direction of transportation and transversely of an axis of tilting of said container likely to occur during said transportation; and a plurality of descending passages located along each of said longitudinally extending side walls, communicating with said coolant compartment and operable to receive a gravity flow of gasified coolant therefrom, and further communicating with diverse ones of said product compartments; said descending passages being dimensioned such that the flow capacity of the descending passages of each side increases progressively so as to conduct to said product compartments a progressively greater flow of cooling gas relative to a downward direction of reference in a manner maintaining the temperatures of said product compartments substantially uniform.
Claim 3
Dependent Claim
38 words
A container as described in claim 1 wherein: first insulating means provides insulation extending exteriorly along outer wall means of said descending passages; and second insulating means provide insluation between said descending passages and an uppermost product compartment.
Claim 4
Dependent Claim
56 words
A container as described in claim 1 wherein descending passages for each compartment are located fore and aft of a longitudinal midpoint of said container on each said side of said container such that floW of cooling gas to each compartment is continued in similar proportions despite tilting of said container about said axis of tilting.
Claim 5
Dependent Claim
84 words
A container as described in claim 1 including thermal barrier means interposed between said coolant compartment and an uppermost one of said product compartments; and condensate absorbing insulating means spaced from said thermal barrier means and extending across the top of said uppermost product compartment; said insulating means being arranged to pass water vapor while absorbing water droplets in a manner tending to gradually increase the conductivity of said insulating means so as to avoid thermal shock at the beginning of a cooling phase.
Claim 6
Dependent Claim
58 words
A cooling container as described in claim 1 wherein: said descending passages along each of said side wall means are formed, at least in part, by recesses within said longitudinally extending side wall means and are enclosed, at least in part, by a removable inner wall that extends along substantially the entire length of said side wall means.
Claim 7
Dependent Claim
38 words
A cooling container as described in claim 5 wherein: said descending passages are arranged with longer passages thereof, which communicate with said lower ones of said product compartments, located adjacent fore and aft ends of said side walls.
Claim 8
Dependent Claim
53 words
A container as defined in claim 5 wherein said inner wall means includes indented sections defining supports for shelves of said compartments; and indented sections being provided with apertures, each communicating with one of said descending passages; said apertures being relatively dimensioned in accordance with the flow capacity of said associated descending passages.
Claim 9
Dependent Claim
106 words
A container as defined in claim 1 wherein said coolant compartment includes a base having longitudinally spaced openings at the sides thereof that communicate with said passages; said longitudinally spaced openings being divided by transversely extending rails on said base; a tray being disposed on said rails to carry said coolant; said tray being perforated to conduct coolant gas downwardly into the spaces defined by said tray and said rails; said rails being arranged to confine cooling gas within said spaces during limited tilting of said container about said transverse axis of tilting to tend to maintain uniform the flow of cooling gas through said openings.
Claim 10
Dependent Claim
61 words
Apparatus according to claim 8 wherein said base further includes transverse strips; said strips extending higher than said rails and serving to separate adjacently located ones of said trays to define coolant zones within said coolant compartment; said strips being arranged to confine cooling gases within said respective zones during limited tilting of said container about said transverse axis of tilting.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |