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US3835660A Expired / Lapsed US ⏱️ 0.0 years remaining

Refrigerator cabinet construction

Assignee: Lanteris Space LLC
•
Filing: 1973-01-12
•
Granted: 1974-09-17
•
Expires: 1993-01-12
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Abstract

Abstract Refrigerator cabinet construction including an outer shell and a double compartment inner liner formed from a single sheet of thermoplastic material and having, in the general plane of the doors, a mullion provided between the two compartments and against which adjacent edges of the doors are adapted to seal. A portion of the hot gas line from the refrigerator condenser system extends along the rear surface of the mullion, between the adjacent side walls of the two compartments, to prevent condensation upon the exterior surface of said mullion by insuring that it is maintained at a temperature above the dew point of the ambient air. A strip of semi-flexible material of high magnetic permeability extends along the length of the mullion and has said dew point compensator tubing secured in high heat exchange relation with its rearwardly presented surface. During manufacture of the refrigerator the forwardly presented surface of said strip is maintained in intimate contact with the interior surface of the mullion through the agency of elongated magnetic means which is disposed adjacent the outer surface of the mullion during assembly of the cabinet, and particularly during foaming of insulation in the space between the inner liner and outer shell. The foamed-in-place insulation presses against the resilient strip and maintains it in good thermal relation with the interior surface of the mullion, after the magnetic means has been removed. In the resultant cabinet construction the intimate contact between the strip of material of high permeability and the interior surface of the mullion insures high heat exhange relation between the dew point compensator tube and the mullion, the strip at the same time being available as an armature, permitting use of door sealing gaskets of the magnetic type.

Inventors

  • 👤 H Franck

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 02:39
CPC Classifications
F; F25; F25D; F25D23/00; F25D23/08; F25D23/082; F25D21/00; F25D21/04; F25D2400/00; F25D2400/06

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 143 words
A refrigerator cabinet, comprising: an outer shell; an inner liner of thermoplastic material nested within said outer shell, said liner presenting a first strip of thermoplastic material having an interior surface facing the insulation space and an exterior surface against which the refrigerator door structure is adapted to seal; a second strip of material having one surface adjacent said interior surface of said first strip and another surface opposite the one surface and facing the insulation space, said second strip being a material of high magnetic permeability; dew point compensator means extending along the recited other surface of said second strip and secured in high heat exchange relation therewith; and insulation foamed in place within the space between the shell and liner, and bearing against said second strip to mount the same in close contact with the interior surface of said first strip.
Claim 2
Dependent Claim 143 words
A refrigerator cabinet, comprising: an outer shell; an inner liner of thermoplastic material nested within said outer shell, said liner presenting a first strip of thermoplastic material having an interior surface facing the insulation space and an exterior surface against which the refrigerator door structure is adapted to seal; a second strip of material having one surface adjacent said interior surface of said first strip and another surface opposite the one surface and facing the insulation space, said second strip being a material of high magnetic permeability; dew point compensator means extending along the recited other surface of said second strip and secured in high heat exchange relation therewith; and insulation foamed in place within the space between the shell and liner, and bearing against said second strip to mount the same in close contact with the interior surface of said first strip.
Claim 3
Dependent Claim 42 words
A refrigerator cabinet in accordance with claim 1, in which said dew point compensator means comprises refrigerant tubing, and said second strip includes structure defining a recess having opposed surfaces which are clamped in double-line contact with opposite sides of said tubing.
Claim 4
Dependent Claim 194 words
A refrigerator cabinet, comprising: an outer shell; a double compartment liner formed from a single sheet of thermoplastic material nested within said outer shell, said liner having, in the general plane of the compartment openings, a mullion extending between the two compartments against which edges of compartment doors are adapted to seal; a strip-like armature of high magnetic permeability extending along the interior surface of said mullion and with one surface of said armature in close contact with the interior surface of said mullion; dew point compensator means secured in high heat exchange relation with the opposite surface of said strip-like armature; thermal insulation foamed in place between said shell and liner and bearing against said armature to maintain the same in intimate contact with said mullion of said thermoplastic inner liner in provision of high heat exchange relation between said dew point compensator means and said mullion through the intermediacy of said armature; and door structure carrying gasket means of the magnetic type, the magnetic gasket means of said door structure, when the latter is in closed position, being attracted to said armature whereby to seal the door structure against the thermoplastic mullion.
Claim 5
Dependent Claim 194 words
A refrigerator cabinet, comprising: an outer shell; a double compartment liner formed from a single sheet of thermoplastic material nested within said outer shell, said liner having, in the general plane of the compartment openings, a mullion extending between the two compartments against which edges of compartment doors are adapted to seal; a strip-like armature of high magnetic permeability extending along the interior surface of said mullion and with one surface of said armature in close contact with the interior surface of said mullion; dew point compensator means secured in high heat exchange relation with the opposite surface of said strip-like armature; thermal insulation foamed in place between said shell and liner and bearing against said armature to maintain the same in intimate contact with said mullion of said thermoplastic inner liner in provision of high heat exchange relation between said dew point compensator means and said mullion through the intermediacy of said armature; and door structure carrying gasket means of the magnetic type, the magnetic gasket means of said door structure, when the latter is in closed position, being attracted to said armature whereby to seal the door structure against the thermoplastic mullion.

References Cited (Backward Citations)

US2449384A Cited
US2537314A Cited
US3157306A Cited
US3331648A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-09-16 1978-03-18 1978-09-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-09-16 1982-03-18 1982-09-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-09-16 1986-03-18 1986-09-17 $7700.00 Window Closed / Lapsed

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