# US 8,769,879 B2 · Refrigerator door and method of manufacture thereof

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- Number: US 8,769,879 B2
- Document ID: US8769879B2
- Status: Granted
- Kind: B2
- Application number: 13/306,891
- Filed: 2011-11-29
- Published: 2012-03-22
- Granted: 2014-07-08
- Earliest claimed: 2005-07-20
- Assignees: LG Electronics Inc.
- Applicants: Kab-Young Lee; Sang-Woo Kim
- Inventors: Kab-Young Lee; Sang-Woo Kim
- Web page: https://patentgrep.com/patent/US8769879B2

## CPC

- F25D 23/02: Doors; Covers (F25D23/08 takes precedence {locks or fastenings E05B65/0042})
- F25D 29/005: {Mounting of control devices}
- F25D 2400/18: Aesthetic features
- F25D 2400/36: Visual displays
- Y10T 29/49: Method of mechanical manufacture
- Y10T 29/49993: Filling of opening
- F25D: REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR (refrigerated showcases A47F3/04; thermally-insulated vessels for domestic use A47J41/00; refrigerated vehicles, see the appropriate subclasses of classes B60 - B64; containers with thermal insulation in general B65D81/38; heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K5/00; thermally-insulated vessels for liquefied or solidified gases F17C; air-conditioning or air-humidification F24F; refrigeration machines, plants, or systems F25B; cooling of instruments or comparable apparatus without refrigeration G12B)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method of manufacturing a refrigerator door is provided. The method includes installing a display portion on a rear surface of a front decoration, the front decoration defining a front external appearance of the refrigerator door, coupling door decorations to both side ends of the front decoration, the door decorations defining both side external appearances of the refrigerator door, coupling cap decorations to upper and lower ends of the front decoration to which the door decorations are coupled, the cap decorations defining top and bottom external appearances of the refrigerator door, injecting foam liquid into a space defined by the front decoration, the door decorations and the cap decorations, and coupling a door liner to a rear of the front decoration.

## Claims

### Claim 1

A method of manufacturing a refrigerator door comprising:
preparing a front decoration by making a rear surface of a transparent plate member colored with a predetermined color;
coupling door decorations to both side ends of the front decoration, respectively, such that the door decorations define both side external appearances of the refrigerator door;
after the front decoration and the door decorations are coupled to each other, coupling cap decorations to upper and lower ends of the front decoration, respectively, such that the cap decorations define top and bottom external appearances of the refrigerator door;
injecting foam liquid into a space formed by the front decoration, the door decorations and the cap decorations;
after injecting foam liquid, coupling a door liner to a rear of the front decoration before the foam liquid is solidified; and
installing a display portion to a rear surface of the front decoration, the display portion including:
a display section configured to display operating states of the refrigerator; and
an input section for inputting a user's command,
wherein the front decoration includes:
a transparent window formed in a portion where the display section is in contact with the front decoration; and
an input mark printed in a portion where the input section is in contact with the front decoration.

### Claim 2 (depends on 1)

The method of claim 1, wherein installing of the display portion is performed before injecting foam liquid.

### Claim 3 (depends on 2)

The method of claim 2, wherein coupling the door decorations is performed after installing the display portion.

### Claim 4 (depends on 1)

The method of claim 1, further comprising a colored portion colored along a peripheral portion of the display section,
wherein the color of the colored portion of the display section is identical to the predetermined color.

### Claim 5 (depends on 4)

The method of claim 4, wherein a peripheral portion of the transparent window is configured to at least partially overlap with the colored portion of the display section.

### Claim 6

A method of manufacturing a refrigerator door comprising:
preparing a front decoration by making a rear surface of a transparent plate member colored with a predetermined color;
installing a display unit to a rear surface of the front decoration, the display unit including a display section configured to display operating states of the refrigerator and an input section for inputting a user's command;
coupling door decorations to both side ends of the front decoration, respectively, such that the door decorations define both side external appearances of the refrigerator door;
after the front decoration and the door decorations are coupled to each other, coupling cap decorations to upper and lower ends of the front decoration, respectively, such that the cap decorations define top and bottom external appearances of the refrigerator door;
injecting foam liquid into a space formed by the front decoration, the door decorations and the cap decorations; and
coupling a door liner to a rear of the front decoration before the foam liquid is solidified,
wherein the front decoration includes a transparent window formed in a portion where the display section is in contact with the front decoration and an input mark printed in a portion where the input section is in contact with the front decoration.

### Claim 7 (depends on 6)

The method of claim 6, wherein installing of the display portion is performed before injecting foam liquid.

### Claim 8 (depends on 7)

The method of claim 7, wherein coupling the door decorations is performed after installing the display portion.

### Claim 9 (depends on 6)

The method of claim 6, further comprising a colored portion colored along a peripheral portion of the display section,
wherein the color of the colored portion of the display section is identical to the predetermined color.

### Claim 10 (depends on 9)

The method of claim 9, wherein a peripheral portion of the transparent window is configured to at least partially overlap with the colored portion of the display section.