Method of making a continuous string of pocketed springs

US11109686B2 · kind B2 · utility

Assignee

• L&P Property Management Company · US

Inventors

• Guido Eigenmann · Carthage, US
• Darrell A. Richmond · Carthage, US
• Bernhard Bauer · Lebring, AT
• Urs Liechti · Goldach, CH
• Andreas Meier · Wilhermsdorf, DE

Key dates

• Filing date: May 21, 2019
• Grant date: Sep 7, 2021
• Expiry date: Jan 20, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2031/7742
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A pocketed spring assembly comprises parallel strings, each string joined to at least one adjacent string. At least some of the strings have springs of different gauge wire and some of the pockets of the strings having springs of different gauge wire are spliced together. At least some of the strings have springs of different geometries and some of the pockets of the strings having springs of different geometries are spliced together. At least some strings may have end sections with springs different than a middle section therebetween, the springs of the end sections being firmer than the springs of the middle section.