Sealy Technology, LLC

David J Pleiman

Larry K DeMoss

Brian M Manuszak

Randy Sizemore

James A Beamon

Herman F Fisher

Joseph Truskolasky

Dan Olsen

Darin T Thomas

Mark J Reisz

Larry K Demoss

A spring is provided that exhibits a variable and non-linear loading response upon compression. The spring comprises a continuous wire having a lower end convolution, an upper end convolution, and a plurality of helical intermediate convolutions. The upper end convolution, the lower end convolution, and the helical intermediate convolutions each have a respective diameter, with the continuous wire further defining a pitch between the various convolutions. In the spring, one or more of the diameters of the convolutions or one or more of the pitches varies along the length of the continuous wire such that the spring exhibits a non-linear loading response upon compression. A mattress is further provided and includes a plurality of the springs arranged in a matrix.

Coil springs with non-linear loading responses and mattresses including the same

A reverse coil head coil and innerspring has a generally cylindrical and helical wire form coil body and opposing coil ends which terminate on opposite sides of a reference plane that passes through the coil body. The reverse coil head coils are interconnected in a matrix to form an innerspring wherein only one terminal end of each coil is located at a perimeter of the innerspring. Variations in the number and pitch of helical turns of the coil body are also disclosed.

Reverse coil head coils and innersprings

Coil

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Peyton, CO, United States of America

David J Pleiman