Cushion forming apparatus and method of use

• US 7,320,737 B2
• Filed: 11/01/2004
• Issued: 01/22/2008
• Est. Priority Date: 10/31/2003
• Status: Active Grant

• Current Assignee: Ohio Foam Corporation
• Original Assignee: Tiger Sales, Inc.
• Inventors: Cabraja, Mark S.
• Primary Examiner(s): WARD, JESSICA LEE
• Application Number:
  US10/978,912
• Publication Number:
  US 20050161151A1
• Time in Patent Office: 1,177 Days
• Field of Search: None
• US Class Current: 156/202
• CPC Class Codes: B29D 99/0092 Producing upholstery articles, e.g. cushions, seats B29C63/025 takes precedence
• CPC Class Codes: B29L 2031/58 Upholstery or cushions, e.g. vehicle upholstery or interior padding mattresses, cushions B29L2031/751
• CPC Class Codes: B29L 2031/751 Mattresses, cushions upholstery B29L2031/58
• CPC Class Codes: B29L 2031/771 Seats
• CPC Class Codes: B68G 7/05 Covering or enveloping cores of pads in plastics material using a matching die B29C63/025
• CPC Class Codes: Y10T 156/1011 Overedge bending or overedge folding
• CPC Class Codes: Y10T 156/1028 by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
• CPC Class Codes: Y10T 156/1034 Overedge bending of lamina about edges of sheetlike base
• CPC Class Codes: Y10T 156/1044 of parallel stacked sheets only
• CPC Class Codes: Y10T 156/1046 Bending of one lamina only
• CPC Class Codes: Y10T 156/1744 Means bringing discrete articles into assembled relationship

Abstract

A cushion forming apparatus includes a frame with a pivoted hold down member and a pneumatic bladder below the hold down member. The bladder is alternately connectable with a source of pressure and to atmosphere through control valve. The components of a cushion sub-assembly are loaded onto the deflated bladder, the hold down member is lowered to the locked position, the bladder is inflated to force a cover around foam blocks and adjacent a base, the cover is attached to the side edges of the base, the bladder is deflated, the hold down member released and the assembled structure removed.

Claims

1. A method of forming a cushion having components thereof including a rigid base, at least one foam block and a cover, said method comprising the steps of:

placing the components of the cushion onto a deflated bladder with a hold down member in an open loading position;

lowering the hold down member to a closed, locked position with a latch thereon engaging a base frame;

inflating the bladder through the direction of air into the bladder from an air source to force the cover around the at least one foam block of the cushion to a position adjacent the rigid base;

attaching the cover to the rigid base;

deflating the bladder;

releasing the latch and raising the hold down member to an unloading position; and

removing the cushion.

2. The method of claim 1 wherein the cover of the cushion is a foam cover and the cushion is a cushion sub-assembly.

3. The method of claim 2 wherein a plurality of blocks are provided in the cushion subassembly.

4. The method of claim 3 wherein the attaching of the cover to the rigid base is though adhesives and further including the step of trimming excess portions of the cover after the assembled cushion is removed.

5. The method of claim 4 further including the step of providing a curing time following the attaching of the cover to the rigid base prior to the deflation of the inflated bladder via venting of the bladder to atmosphere.

6. The method of claim 5 wherein the cover is attached to the side edges of the rigid base.

7. The method of claim 6 further including the step of detecting the locked position of the hold down member prior to inflation of the bladder.

8. The method of claim 7 further including the step of detecting proper operator position prior to inflation of the bladder.

9. The method of claim 8 further including the step of detecting the appropriate deflation of the bladder prior to releasing the latch.

10. The method of claim 9 wherein the trimming of the cover is manual.

11. The method of claim 10 wherein the rigid base is a frame with a webbing central portion.