The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2021
Filed:
Dec. 17, 2015
Sealy Technology, Llc, Trinity, NC (US);
Larry K. DeMoss, Greensboro, NC (US);
Brian M. Manuszak, Thomasville, NC (US);
Allen M. Platek, Jamestown, NC (US);
Kevin Tar, Summerfield, NC (US);
Sealy Technology, LLC, Trinity, NC (US);
Abstract
A coil-in-coil spring is provided that exhibits a variable loading response as the spring is compressed. The coil-in-coil spring comprises a continuous wire forming' an inner coil having a substantially conical shape and an outer coil extending around the inner coil and having a substantially cylindrical shape. The inner coil includes a plurality of helical convolutions with diameters that progressively decrease as the plurality of helical convolutions extend from a lower end of the coil-in-coil spring to an upper end convolution of the inner coil. The inner coil also has an uncompressed height that is about 75% of the uncompressed height of the outer coil, A mattress is further provided and includes the coil-in-coil springs arranged in a matrix.