Method of molding a foamed mattress having a crown area with cored-out areas

• US 4,148,855 A
• Filed: 11/07/1977
• Issued: 04/10/1979
• Est. Priority Date: 04/19/1976
• Status: Expired due to Term

• Current Assignee: Goodyear Tire & Rubber Company
• Original Assignee: Goodyear Tire & Rubber Company
• Inventors: Stalter, Robert J., Burkholder, Theodore B.
• Primary Examiner(s): Anderson, Philip
• Application Number:
  US05/849,139
• Time in Patent Office: 519 Days
• Field of Search: 264/50, 264/45.1, 264/54, 264/331, 264/293
• US Class Current: 264/54
• CPC Class Codes: A47C 27/146 on the outside surface of the mattress or cushion

Abstract

A process for casting a foamed mattress having a crown area with cored-out areas therein to modify the harshness of feel of said mattress. A mold cavity having gates therein to give the cored-out pattern in the crown of the mattress is provided and a liquid foamable urethane resin reaction mixture is deposited and distributed in a fan-shaped arc in the cavity from preferably two or more distributing beads in response to the relative movement of the depositing and distributing means to that of the mold. The deposited mixture is then permitted to foam in order to fill the mold and to their cure prior to removing the product from the mold cavity.

Claims

1. A method for making a mattress core comprising effecting relative movement between a pour means and a mold having a cavity with a mattress crown configuration in the bottom thereof, said cavity containing gates to give a cored-out pattern in said crown, distributing in a fan-shaped arc a foamable liquid polyurethane reaction mixture in response to the relative movement between the pouring means and the mold to distribute the mixture from one end and over the gates to the other end of the mold, allowing the mixture to foam and fill the mold and cure before removing said core from the mold.

2. The method of claim 1 wherein the cavity of the mold contains gates that vary in depth from about 0.5 to about 2 inches.