Patent ID: 6122900
Filing Date: 2000-09-26
Classification: B65B,B68G,Y10T

Abstract:
A system for manufacturing pocketed compound nested coil springs comprising:a first coiling station to produce a plurality of first coil springs each of a first uncompressed height having a longitudinal axis;a second coiling station to produce a plurality of second coil springs each of a second uncompressed height which Is greater than the first uncompressed height of the first coil springs, each of the second coil springs having a longitudinal axis and a plurality of normally spaced coils;a transfer station to receive the second coil springs from the second coiling station with the longitudinal axes of the second coil springs being generally horizontal;a nesting mechanism for inserting one of the first coil springs in a compressed configuration between adjacent coils of one of the second coil springs in an uncompressed configuration and thereby forming a compound nested coil spring;a compression mechanism to compress each of the second coil springs;an insertion mechanism to insert each of the compressed second coil springs between plies of a pocketing material; anda pocket forming arrangement to form an individual pocket in the pocketing material around each of the second coil springs;wherein each of the compound nested coil springs is permitted to expand within the respective individual pocket and thereby form the pocketed compound nested coil spring.