Patent ID: 6339857
Filing Date: 2002-01-22
Classification: A47C

Abstract:
A spring arrangement for a mattress comprising:an array of springs, wherein the springs are double conical springs (75) with each coil spring (75) being knotted (76, 77) at its opposite ends on one side or is unknotted at its opposite ends on one side and has a tendency when subject to load to bend over at another side (B), and wherein a plurality of rows of said springs (75) are provided spaced apart in a head-to-toe arrangement (39) in which the springs (75) are disposed in adjacent rows (40-56) with the coil springs (57-72 and 74) in each row (40-56) being spaced apart along the length of the arrangement (39), and wherein interconnecting or lacing wires (73) interconnect the springs in a row (even number reference numerals) along the length of the arrangement, and also interconnect the springs in the adjacent row (odd numbered reference numerals) to form rows (40-56) of interconnected spaced springs and with the coils of the adjacent similar rows (odd and even numbers) being juxtaposed, and in which the spacing of the springs (57-72 and 74) in each of the head-to-toe rows (40-56) is closer in at least a central region (B) where greater support or firmer support is required, and in which a plurality of pairs (57, 58, 59, 60 etc.) of the springs in each row (40-56) of interconnected spaced apart springs are arranged so that the knotted (76, 77) or said unknotted sides in each said plurality of pairs of springs (57, 58; 59, 60 etc.) are juxtaposed or so that said one sides to which there is a tendency to bend over are oppositely disposed in said pairs or otherwise oriented to act to counteract each other.