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:
Nov. 07, 1978
Filed:
Jun. 30, 1977
Larry Higgins, Carthage, MO (US);
Leggett & Platt, Incorporated, Carthage, MO (US);
Abstract
A coil spring assembly having increased firmness in a preselected area of the assembly through use of a novel spring connector structure and method. The increased firmness is provided by, during fabrication, overlapping joint segments of a pair of adjacent coil springs' top loops, positioning a levelizer wire across the overlapped joint so formed, deflecting at least one of the overlapped joint segments out of its normal arcuate attitude toward a linear attitude, and wrapping a helical lacing wire around the overlapped joint segments and levelizer wire in a sufficiently tight manner to prevent the deflected joint segment from returning fully to its normal arcuate attitude, thereby maintaining the spring joint so established in a prestressed state. Preferably, this structure and method employs a single levelizer wire and a single lacing wire to connect adjacent springs in adjacent parallel rows from one end of the rows to the other.