Flexible retractable door

• US 5,332,021 A
• Filed: 05/08/1992
• Issued: 07/26/1994
• Est. Priority Date: 09/11/1991
• Status: Expired due to Fees

• Current Assignee: James A. Grieve, John M. Todd
• Original Assignee: James A. Grieve, John M. Todd
• Inventors: Todd, John M., Grieve, James A.
• Primary Examiner(s): Johnson, Blair M.
• Application Number:
  US07/880,491
• Time in Patent Office: 809 Days
• Field of Search: 160/23.1, 160/26, 160/32, 160/133, 160/188, 160/192, 160/201, 160/229.1, 160/230, 160/231.1, 160/231.2, 160/238, 160/264, 160/271, 160/313, 160/DIG. 8
• US Class Current: 160/133
• CPC Class Codes: A47K 3/38 Curtain arrangements curtains, curtain suspension devices A47H
• CPC Class Codes: E06B 9/08 Roll-type closures roller blinds E06B9/40; operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; usable only as awnings E04F10/06
• CPC Class Codes: E06B 9/115 specially adapted for furniture
• CPC Class Codes: E06B 9/13 with closing members of one piece, e.g. of corrugated sheet metal

Abstract

A flexible, retractable assembly for use as a door, space divider, covering or the like which comprises a sheet such as Mylar polyester film having a permanent memory set to roll up on itself or otherwise retract automatically into a coil, accordion, or other compact configuration. The assembly is adapted to be stored on one side of an opening and then guided across the opening to fully or partially cover the opening. The permanent memory set of the sheet permits it to retract at least partially under its own force to eliminate or minimize the need for separate rewinding apparatus. The sheet may substitute for a variety of standard products including entryway doors, closet, cabinet and shower doors, screen doors and windows, room dividers, machinery guards and covers for various items such as florescent light fixtures. The sheet may be combined with decorative finishes including a tambour composite structure providing aesthetic and functional advantages.

Claims

1. A flexible retractable closure assembly for an opening comprising:

a flexible sheet having front and rear end edges and side edges extending laterally between the end edges,

said sheet having a permanent memory set to gather itself automatically into a compact configuration proximate said rear edge,

locating means retaining said compact configuration at one side of said opening,

guide means guiding said sheet from the locating means across the opening,

retaining means for holding the sheet in an extended position whereby the sheet extends at least partially over said opening,

and wherein by the sheet moving from said locating means, the sheet is movable between;

(a) a retracted position with the front end edge near the locating means and the substantial entirety of the sheet in a compact state, and

(b) said extended position with the front end edge spaced from the locating means and a substantial portion of the sheet extending across the opening

said sheet includes stiffening means, wherein said stiffening means comprise vertically extending slats attached to said sheet in side-by-side fashion, said slats providing a tambour effect to said sheet.

2. An assembly as claimed in claim 1 wherein said compact configuration comprises a coil.

3. An assembly as claimed in claim 1 including retaining means to retain the sheet in the retracted position and in positions intermediate the retracted and extended positions.

4. An assembly as claimed in claim 1 wherein said sheet is rectangular,

said guide means comprising channel means receiving and guiding at least one of said side edges therein.

5. An assembly as claimed in claim 2 wherein said locating means comprise vertical axle means centrally within said coil.

6. An assembly as claimed in claim 5 including coil support surfaces under the coil supporting the coil by contact with the lower side edge.

7. An assembly as claimed in claim 6 wherein the coil support surfaces are low friction surfaces to facilitate uncoiling and sliding of the lower side edge of the coil thereon.

8. An assembly as claimed in claim 7 wherein the coil support surfaces are journalled for rotation about a vertical axis substantially coincident with the axis of said coil.

9. An assembly as claimed in claim 1 wherein said sheet comprises polyester film thermally treated to have said permanent coil set.

10. An assembly as claimed in claim 9 wherein said sheet comprises Mylar (trademark) brand film.

11. An assembly as claimed in claim 1 including a weight positioned for vertical movement at the side of said opening opposite said locating means, and means extending between and attached to said weight and said front edge whereby the weight operates to assist in movement of the sheet between retracted and extended positions.

12. An assembly according to claim 1 including an upper guide rail, and means defined by said slats engaging said rail to thereby provide support for said sheet.

13. An assembly according to claim 1 wherein said sheet is thermally treated to provide a plurality of side-by-side, vertically extending flat areas separated by crease lines, and a slat secured to each flat area.

14. An assembly as claimed in claim 1 including means positioned at the side of said opening opposite said locating means for urging said sheet to the extended position, and means extending between and attached to said urging means and to said front end edge whereby the urging means assists in movement of the sheet to the extended position.

15. An assembly according to claim 14 wherein said urging means comprises a weight, and a cord extending between said weight and front end edge.

16. An assembly according to claim 1 wherein said opening comprises the access opening to a cabinet.

17. An assembly according to claim 1 wherein said guide means include a support extending across said opening along the path of movement of the top side edge of said sheet, and means attached to said sheet and movable relative to said support whereby said support assists in maintaining said sheet in said path of movement.