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:
Dec. 31, 2002
Filed:
Jun. 16, 2000
Roland Graf, St. Gallen, CH;
Niels S. Mossbeck, Carthage, MI (US);
Thomas J. Wells, Carthage, MI (US);
Spuhl AG St. Gallen, Wittenbach, CH;
Abstract
A string ( ) of pocketed coil springs ( ) is formed by inserting compressed springs between upper and lower plies of a folded, preferably thermally weldable fabric ( ). The springs are maintained in a compressed configuration while a longitudinal seam ( ) joins the free edges of the thermally welded fabric ( ) together. Subsequently, the compressed springs ( ) are allowed to relax into an expanded configuration after which a transverse seam ( ) is formed in the fabric ( ) between the adjacent springs ( ) thereby encapsulating each spring ( ) within a fabric pocket ( ). The string ( ) of pocketed coil springs ( ) is advantageously formed without the need for reorienting the springs ( ) after being inserted between the plies ( ) of the fabric ( ) and thereby avoiding the disadvantages and complications associated with turning or reorienting the pocketed coil spring ( ).