Method of manufacturing a cushion article

• US 6,017,407 A
• Filed: 10/22/1997
• Issued: 01/25/2000
• Est. Priority Date: 10/22/1997
• Status: Expired due to Fees

• Current Assignee: Paul M. Yates
• Original Assignee: Paul M. Yates
• Inventors: Yates, Paul M.
• Primary Examiner(s): Silbaugh, Jan H.
• Assistant Examiner(s): Staicovici, Stefan
• Application Number:
  US08/955,585
• Time in Patent Office: 825 Days
• Field of Search: 156/145, 156/290, 156/308.4, 156/221, 264/154, 264/155, 264/257, 264/263, 264/267, 264/266
• US Class Current: 156/221
• CPC Class Codes: B29C 44/04 consisting of at least two parts of chemically or physically different materials, e.g. having different densities
• CPC Class Codes: B29C 44/146 Shaping the lining before foaming
• CPC Class Codes: G06F 3/0395 Mouse pads
• CPC Class Codes: Y10T 156/1043 Subsequent to assembly

Abstract

A cushion article, such as a wrist support or the like, and a method of manufacturing same are provided. The cushion article includes a multiple density, cushioned surface bonded to a molded foam shell. The saddle includes a contoured fabric surface with an underlying layer of soft gel. The gel may be molded to form embossment or imprinting in the fabric surface. A method of the invention includes the steps of disposing the saddle shell having a fabric sealed thereto, into a mold having a molding surface defining a desired contour and/or a desired pattern of embossment to be formed in the fabric. A thermoplastic gelable liquid is injected between the shell and the fabric. The fabric is contoured and or embossed by allowing the gelable liquid to cool while the shell is disposed in mold. The shell may be made of a foam material which is compressed into a desired shape and heat treated to form a shell having firmer, more dense portions and softer, less dense portions.

Claims

1. A method of making an article having a shell with a contoured cushion on a portion of a surface thereof, said method comprising the steps of:

providing a shell having a desired shape;

providing a fabric having a size and shape suitable for covering a portion of a top surface of the shell;

providing a mold having a molding surface defining a desired contour for the cushion;

sealing the fabric to the shell at that portion of the top surface where the cushion is to be formed;

disposing the shell having the fabric sealed thereto, in the mold such that the fabric faces the molding surface;

injecting a gelable medium between the shell and the fabric in order to force the fabric away from the shell and into intimate contact with the molding surface;

contouring the cushion by allowing the gelable medium to gelate and bond with the fabric while the shell is disposed in the mold; and

removing the article having the contoured cushion from the mold.

2. The method according to claim 1 wherein the step of contouring the cushion article includes cooling the mold to prevent penetration of the gelable medium through the fabric.

3. The method according to claim 1 wherein the step of providing a mold comprises the step of providing a mold having a molding surface defining a desired pattern to be embossed into the cushion article and the step of contouring comprises the step of embossing the desired pattern into the fabric by allowing the gelable medium to gelate and bond with the fabric while the shell is disposed in the mold.

4. The method according to claim 1 wherein the step of providing a shell comprises providing a compressible foam, molding the compressible foam by compressing the foam while applying heat thereto in order to heat form the compressible foam into the desired shape, allowing the heat formed shell to cool and removing the shell having the desired shape from the mold.

5. The method according to claim 4 wherein the step of injecting a gelable medium comprises providing an opening through the shell and injecting the gelable medium through the opening while the shell having the fabric sealed thereto is disposed in the mold.

6. The method according to claim 1 wherein the step of providing a shell comprises the steps of

providing a shell mold,

providing a compressible foam,

shaping the foam into a shell having a shape defined by a firm, more compressed portion and a flexible, less compressed portion, by more substantially compressing a portion of the foam while less substantially compressing another portion of the foam with the shell mold, and heating the shell mold during the compressing in order to fix the compressed foam into the desired shell shape.

7. The method according to claim 5 wherein the step of shaping the foam comprises shaping the foam into a shell having a tray shape defined by a firm, more compressed rim and a flexible, less compressed interior.

8. The method according to claim 7 wherein the step of injecting a gelable medium comprises providing an opening through the less compressed interior of the shell and injecting the gelable medium through the opening.