US 12,135,066 B2
Open coil spring assemblies
Larry K. DeMoss, Greensboro, NC (US); Brian M. Manuszak, Thomasville, NC (US); Kevin M. Tar, Summerfield, NC (US); Darin T. Thomas, Salisbury, NC (US); Daniel W. Green, Victoria (AU); and Morrison J. Just, Victoria (AU)
Assigned to SEALY TECHNOLOGY LLC, Trinity, NC (US)
Filed by Sealy Technology, LLC, Trinity, NC (US)
Filed on Sep. 7, 2022, as Appl. No. 17/939,502.
Application 17/939,502 is a continuation of application No. 16/469,379, granted, now 11,480,228, previously published as PCT/US2017/066671, filed on Dec. 15, 2017.
Claims priority of provisional application 62/434,668, filed on Dec. 15, 2016.
Prior Publication US 2023/0072656 A1, Mar. 9, 2023
Int. Cl. A47C 23/043 (2006.01); A47C 27/07 (2006.01); F16F 1/12 (2006.01); F16F 3/02 (2006.01); A47C 23/05 (2006.01)
CPC F16F 1/12 (2013.01) [F16F 3/02 (2013.01); A47C 23/043 (2013.01); A47C 23/05 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An open coil spring assembly, comprising:
a plurality open coil springs including an upper end convolution, a lower end convolution, and a plurality of helical convolutions that extend between the upper end convolution and the lower end convolution, each of the open coil springs including (a) an upper spring portion that includes the upper end convolution and that is conical and (b) a lower spring portion that is cylindrical; and
upper lacings extending between the plurality of rows,
wherein the plurality of open coil springs are arranged in a matrix with a plurality of rows of open coils springs such that for each of the open coil springs, the upper end convolution of the open coil spring and the upper end convolution of an adjacent open coil spring are spaced apart, and
wherein for each of the open coil springs, at least one upper lacing connects the upper end convolution of the open coil spring to the upper end convolution of an open coil spring of an adjacent row.