Headrest and method for its production

• US 5,478,136 A
• Filed: 02/16/1995
• Issued: 12/26/1995
• Est. Priority Date: 08/28/1994
• Status: Expired due to Term

• Current Assignee: Inoac Corporation (Inoue Rubber Public Company Limited)
• Original Assignee: Inoac Corporation (Inoue Rubber Public Company Limited)
• Inventors: Takeuchi, Nobuo, Ishikawa, Hiyoshi
• Primary Examiner(s): Brown, Peter R.
• Assistant Examiner(s): VU, STEPHEN A
• Application Number:
  US08/389,471
• Time in Patent Office: 313 Days
• Field of Search: 297/220, 297/221, 297/391, 297/396, 297/410, 403/230, 403/252, 264/46.7
• US Class Current: 297/391
• CPC Class Codes: B29C 33/12 with incorporated means for positioning inserts, e.g. labels positioning reinforcements B29C70/541
• CPC Class Codes: B29C 44/143 Means for positioning the lining in the mould in general B29C33/12
• CPC Class Codes: B60N 2/5816 attachments thereof
• CPC Class Codes: B60N 2/7017 characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for
• CPC Class Codes: B60N 2/809 vertically slidable

Abstract

A doughnut plate type stop member is fixed to an opening edge of a stay hole formed on a skin. A concave groove is provided at a predetermined position of a stay of an insert. The stay extending from a base portion is disposed to protrude outward by inserting through the stay hole upon disposing the base portion of the insert in the skin. The stop member is engaged with the concave groove. Upon securing the foregoing condition, a foamed plastics material is poured into the skin, and a headrest is produced by providing a foamed plastic unit integrating the skin and the insert by means of a foam molding.

Claims

1. In a headrest comprising a baglike skin with stay holes as openings, an insert whose base portion is disposed in the skin and the stays extending from the base portion protrude outward passing through the stay holes, and a foamed plastic unit integrating the skin and the insert by a foam molding upon pouring of the foamed plastics material into the skin, said headrest wherein circular ring type stop members are fixed to opening edges of the stay holes of the skin and concave grooves are provided at predetermined positions of the stays of the insert, and the stop members are engaged with the concave grooves to resist slipping movement of the skin around the stay holes during foam molding.

2. The headrest according to claim 1 wherein the stop member has the inside diameter smaller than that of the diameter of the stay, and the concave groove comprises an inclined portion that enlarges a cut on the surface side of the stay and a deep groove portion engaged with the stop member in its innermost part.

3. The headrest according to claim 2 wherein the stop member is pasted to the inside of the baglike skin.