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US3882637A Expired / Lapsed US ⏱️ 0.0 years remaining

Refrigerator door construction and method of forming the same

Assignee: Whirlpool Corp
•
Filing: 1973-11-12
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Granted: 1975-05-13
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Expires: 1993-11-12
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Abstract

Abstract An insulated door construction such as for use as a refrigerator door having an inner liner secured to an outer panel by a snap-in association. A gasket is secured to the door by a portion of the snap-in retaining structure eliminating the need for screws and gasket retainers. The door is reinforced by corner brackets and cross braces. The brackets may be used to position the liner relative to the outer panel where the insulation in the door is relatively soft insulation, such as fiberglass insulation.

Inventors

  • 👤 Robert E Lindenschmidt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 23:22
CPC Classifications
F; F25; F25D; F25D23/00; F25D23/08; F25D23/082; F25D23/087; F25D23/02; F25D2201/00; F25D2201/10; F25D2201/12; F25D2201/126; F25D23/06; F25D23/065; F25D23/066; F25D2400/00; F25D2400/10; Y; Y10; Y10S; Y10S52/00; Y10S52/04; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49872; Y10T29/49888

Claims Analysis

Total Claims: 22
Claim 1
Independent Claim 117 words
An insulated door construction comprising: an outer panel having an inturned peripheral flange means defining an insulation space adjacent said panel; insulation within said space; means on said flange defining a retaining shoulder overlying a peripheral portion of said space; an inner liner having a resilient peripheral lip portion defining an inwardly opening channel resiliently snapped under said shoulder, said inner liner covering said first space and retained in place by said snapped under relationship with said shoulder, said channel being disposed adjacent said shoulder; and door gasket means having a portion received in said channel with an edge thereof underlying said shoulder to be retained by said shoulder for sealing said liner to said outer panel.
Claim 2
Dependent Claim 117 words
An insulated door construction comprising: an outer panel having an inturned peripheral flange means defining an insulation space adjacent said panel; insulation within said space; means on said flange defining a retaining shoulder overlying a peripheral portion of said space; an inner liner having a resilient peripheral lip portion defining an inwardly opening channel resiliently snapped under said shoulder, said inner liner covering said first space and retained in place by said snapped under relationship with said shoulder, said channel being disposed adjacent said shoulder; and door gasket means having a portion received in said channel with an edge thereof underlying said shoulder to be retained by said shoulder for sealing said liner to said outer panel.
Claim 3
Dependent Claim 17 words
The insulated door construction of claim 1 wherein said liner lip portion is pressed into said insulation.
Claim 4
Dependent Claim 26 words
The insulated door construction of claim 1 wherein said liner lip portion comprises an outturned flange portion having a reversely turned distal portion engaging said shoulder.
Claim 5
Dependent Claim 48 words
The insulated door construction of claim 1 wherein said liner lip portion comprises an outturned flange portion having a reversely turned distal portion engaging said shoulder, said lip portion flange portion and distal portion defining a channel structure projecting outwardly into said insulation and inwardly defining said channel.
Claim 6
Dependent Claim 43 words
The insulated door construction of claim 1 wherein said liner lip portion comprises an outturned flange portion having a reversely turned distal portion engaging said shoulder, said lip portion flange portion and distal portion defining a channel structure projecting outwardly into said insulation.
Claim 7
Dependent Claim 13 words
The insulated door construction of claim 1 wherein said insulation comprises foamed-in-place insulation.
Claim 8
Dependent Claim 13 words
The insulated door construction of claim 1 wherein said insulation comprises fiberous insulation.
Claim 9
Dependent Claim 50 words
The insulated door construction of cLaim 1 wherein said liner lip portion comprises an outturned flange portion having a reversely turned distal portion engaging said shoulder, said reversely turned distal portion comprising a flat wall extending angularly toward said shoulder from the outer end of said liner outward flange portion.
Claim 10
Dependent Claim 153 words
An insulated door construction comprising: an outer panel having an inturned peripheral flange means defining an insulation space adjacent said panel, said panel defining a rectangular door means having four corners; insulation within said space; means on said flange defining a retaining shoulder overlying the peripheral portion of said space; an inner liner having a resilient peripheral lip portion defining an inwardly opening channel resiliently snapped under said shoulder, said inner liner covering said first space and retained in place by said snapped under relationship with said shoulder, said channel being disposed adjacent said shoulder; and door gasket means having a portion received in said channel with an edge thereof underlying said shoulder to be retained by said shoulder for sealing said liner to said outer panel; and bracket means disposed at each of said door means corners defining means for retaining said liner lip portion in snapped under relationship with said shoulder.
Claim 11
Dependent Claim 153 words
An insulated door construction comprising: an outer panel having an inturned peripheral flange means defining an insulation space adjacent said panel, said panel defining a rectangular door means having four corners; insulation within said space; means on said flange defining a retaining shoulder overlying the peripheral portion of said space; an inner liner having a resilient peripheral lip portion defining an inwardly opening channel resiliently snapped under said shoulder, said inner liner covering said first space and retained in place by said snapped under relationship with said shoulder, said channel being disposed adjacent said shoulder; and door gasket means having a portion received in said channel with an edge thereof underlying said shoulder to be retained by said shoulder for sealing said liner to said outer panel; and bracket means disposed at each of said door means corners defining means for retaining said liner lip portion in snapped under relationship with said shoulder.
Claim 12
Dependent Claim 25 words
The insulated door construction of claim 9 wherein said bracket means extend inwardly of said insulation and include an edge portion underlying said retaining shoulder.
Claim 13
Dependent Claim 35 words
The insulated door construction of claim 9 wherein said bracket means defines inwardly opening recesses receiving a portion of said door gasket means and retaining said portion in underlying, retained association with said shoulder means.
Claim 14
Dependent Claim 22 words
The insulated door construction of claim 9 wherein cross braces are connected between said bracket means for further rigidifying said door construction.
Claim 15
Dependent Claim 23 words
The insulated door construction of claim 9 wherein cross braces are adjustably connected between said bracket means for further rigidifying said door construction.
Claim 16
Dependent Claim 38 words
The insulated door construction of claim 9 wherein said inner liner defines corner portions provided with notches extending inwardly through said lip portion to permit concurrent flexing of adjacent side portions of said liner for facilitated snapping-under installation.
Claim 17
Independent Claim 118 words
The method of constructing a refrigerator door comprising the steps of: providing an outer panel having an inturned peripheral flange defining an insulation space and shoulder means inturned from said flange to overlie a peripheral portion of said space; filling said insulated space with insulation; providing an inner liner with a resilient peripheral lip portion defining an inwardly opening channel; pressing said lip portion into said insulation under said shoulder to retain said inner liner to said outer panel and with said channel exposed adjacent said shoulder means; and installing a door gasket in said channel, said gasket having a portion extending between said lip portion and said shoulder to seal between said inner liner and outer panel.
Claim 18
Independent Claim 118 words
The method of constructing a refrigerator door comprising the steps of: providing an outer panel having an inturned peripheral flange defining an insulation space and shoulder means inturned from said flange to overlie a peripheral portion of said space; filling said insulated space with insulation; providing an inner liner with a resilient peripheral lip portion defining an inwardly opening channel; pressing said lip portion into said insulation under said shoulder to retain said inner liner to said outer panel and with said channel exposed adjacent said shoulder means; and installing a door gasket in said channel, said gasket having a portion extending between said lip portion and said shoulder to seal between said inner liner and outer panel.
Claim 19
Dependent Claim 27 words
The method of constructing a refrigerator door of claim 15 further including the step of preforming a recess in said insulation for receiving said liner lip portion.
Claim 20
Dependent Claim 24 words
The method of constructing a refrigerator door of claim 15 further including the step of providing adhesive means between said inner liner and insulation.
Claim 21
Dependent Claim 38 words
The method of constructing a refrigerator door of claim 15 further including the step of notching the corners of said liner to permit flexing of the lip portion along the intersecting edges of the liner adjacent the corners.
Claim 22
Dependent Claim 28 words
The method of constructing a refrigerator door of claim 15 wherein said insulation is yieldable and said lip portion is forced into the insulation by a pressure element.

References Cited (Backward Citations)

US1848715A Cited
US2036781A Cited
US2507305A Cited
US2612661A Cited
US2579157A Cited
US2620520A Cited
US3113401A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-05-12 1978-11-11 1979-05-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-05-12 1982-11-11 1983-05-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-05-12 1986-11-11 1987-05-13 $7700.00 Window Closed / Lapsed

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