Patent ID: 8429779
Filing Date: 2013-04-30
Classification: A47C,B21F,Y10T

Abstract:
1. A bedding or seating product comprising: a spring core made up of upper and lower border wires and a plurality of identically configured coil springs each made of a single piece of wire having a central spiral portion defining a central spring axis and terminating at opposing ends with unknotted upper and lower end turns disposed in planes substantially perpendicular to the spring axis, each of the upper and lower end turns being substantially U-shaped and having an arcuate long leg and an arcuate short leg joined by an arcuate connector having a bump, the arcuate long leg being at the free unknotted end of one of said end turns and the arcuate short leg being at the free unknotted end of the other of the end turns of the coil spring, the arcuate connector of one of the end turns being on the opposite side of the central spring axis than the connector of the other end turn of the coil spring, the coil springs being arranged in side-by-side rows and columns and being connected with each other at the upper and lower end turns by helical lacing wires, the coil springs being oriented the same direction in the spring core except the coil springs of the outermost columns of the spring core, every other one of the coil springs in each outermost column being flipped and rotated so that one of the connectors of one of the end turns may be clipped to one of the border wires; padding overlaying an upper surface of the spring core; and an upholstered covering encasing the spring core and padding.