Insulated closure structure and method

• US 6,240,703 B1
• Filed: 03/24/1999
• Issued: 06/05/2001
• Est. Priority Date: 03/24/1999
• Status: Expired due to Fees

• Current Assignee: CNB Enterprises, Inc.
• Original Assignee: CNB Enterprises, Inc.
• Inventors: Brown, Noel S.
• Primary Examiner(s): Friedman, Carl D.
• Assistant Examiner(s): HORTON, YVONNE MICHELE
• Application Number:
  US09/274,673
• Time in Patent Office: 804 Days
• Field of Search: 522/11, 522/12, 527/841.5, 527/941, 49/70, 494/00, 495/01, 495/04, 493/84, 494/70, 494/891, 494/901, 491/65, 494/98, 494/95, 312/138, 312/401, 312/405, 312/406, 312/236, 312/138.1
• US Class Current: 52/784.15
• CPC Class Codes: A47F 3/043 Doors, covers A47F3/0434 takes precedence
• CPC Class Codes: E05B 63/22 operated by a pulling or pushing action perpendicular to the front plate, i.e. by pulling or pushing the wing itself without deadlocking E05C19/02
• CPC Class Codes: E06B 3/88 Edge-protecting devices for door leaves astragals for double doors E06B3/365 ; finger guards for doors or windows E06B7/36
• CPC Class Codes: F25D 13/00 Stationary devices, e.g. cold-rooms
• CPC Class Codes: F25D 23/02 Doors; Covers F25D23/08 takes precedence locks or fastenings E05B65/0042

Abstract

An enclosure door for an insulated space includes an insulated door member that is hingedly mountable to a door frame of an insulated enclosure. A release latch is attached to the door frame for opening the door member. Further, a protective member is affixed in covering relation to at least a portion of an inner face of the door member and is operable to open the door member upon experiencing an impact thereupon. In a particular embodiment, the protective member is affixed to each of a pair of facing door members, each operable to open both door members upon experiencing an impact thereupon.

Claims

1. An enclosure door for an insulated space comprising:

a first and a second door member, each door member hingedly mountable to an opposite side of a door frame of an insulated enclosure;

release means attached to the door frame for opening the door member; and

protective means affixed in covering relation to at least a portion of an inner face of the first door member and operable upon the first door member to effect an opening of the first and the second door member upon experiencing an impact thereupon.

2. The enclosure door recited in claim 1, further comprising an opening means positioned upon the door member and distinct from the protective means operable upon the release means to effect a door member opening.

3. The enclosure door recited in claim 1, further comprising an opening means positioned upon the first door member and distinct from the protective means operable upon the release means to effect an opening of the first door member.

4. The enclosure door recited in claim 1, wherein the protective means comprises a first and a second protective means, one protective means affixed in covering relation to at least a portion of an inner face of each of the first and the second door member, respecively.

5. The enclosure door recited in claim 4, wherein the protective means are each operable upon the respective door member to effect an opening of both the first and the second door members upon experiencing an impact thereupon.

6. The enclosure door recited in claim 1, wherein the protective means comprises a resilient bumper affixed along a lower portion of the door member.

7. The enclosure door recited in claim 6, wherein:

the door member is hinged along a first side and has a second side opposed to the first side; and

the resilient bumper comprises a sheet of polymeric material having a first edge affixed adjacent the door member first side and a second edge opposed to the first edge affixed to the door member adjacent the second side, the second edge curled under an adjacent portion of the sheet.

8. An insulated door structure for a refrigeratable enclosure comprising:

a frame comprising a top member and two side members affixed at top ends to opposed side ends of the top member, the frame affixable within a front opening of a refrigeratable enclosure;

a threshold member positioned in abutting relation at opposed side ends to bottom ends of the side members;

a first and a second insulated door member, each door member hingedly mountable to an opposite side of a frame side member, the door member including means for sealing against the threshold member when in a closed position;

release means attached to the frame for opening the door member; and

protective means affixed in covering relation to at least a portion of an inner face of the first door member and operable to effect an opening of the first and the second door member upon experiencing an impact thereupon.

9. The door structure recited in claim 8, further comprising an opening means positioned upon the first door member and distinct from the protective means operable upon the release means to effect an opening of the first door member.

10. The door structure recited in claim 8, wherein the protective means comprises a resilient bumper affixed along a lower portion of the door member.

11. The door structure recited in claim 8, wherein:

the door member is hinged along a first side and has a second side opposed to the first side; and

the resilient bumper comprises a sheet of polymeric material having a first edge affixed adjacent the door member first side and a second edge opposed to the first edge affixed to the door member adjacent the second side, the second edge curled under an adjacent portion of the sheet.

12. The door structure recited in claim 8, wherein the threshold member is affixable atop a vapor break between a floor of the enclosure and a floor exterior to the enclosure.

13. The door structure recited in claim 8, wherein the release means comprises a latch affixed to top member.

14. A method of protecting a pair of generally opposed door members comprising the step of affixing a protective member in covering relation to at least a portion of an inner face of each of the door members, the portion chosen for being subject to impact, wherein the protective members are each operable to effect an opening of both door members upon experiencing an impact upon either or both of the door members.