Patent ID: 6324711
Filing Date: 2001-12-04
Classification: A47C,B21F

Abstract:
Method of making low density spring interior assemblies comprising the steps of:sequentially forming individual coil springs on a coil forming machine;sequentially placing the individual coil springs at different positions along the length of a conveyor;advancing the coil springs on the conveyor to a transfer station;simultaneously transferring a plurality of the individual coil springs sufficient to form a transverse row of coil springs of a spring interior assembly from the conveyor at the transfer station to a spring interior assembly machine;within the spring interior assembly machine, supporting the transferred plurality of coil springs of the row in a transverse row having a plurality of spring positions that is greater in number than said plurality of transferred coil springs such that a plurality of empty coil spring positions lie transversely adjacent positions occupied by coil springs of the transferred plurality; andlacing the supported plurality of coil springs of the transferred row of coil springs to a previously transferred plurality of coil springs of a different row with coil springs of the previously transferred plurality of coil springs occupying positions that are longitudinally adjacent empty positions of the transferred row of supported plurality of coil springs.