Spring core having border wire with generally rectangular cross-section

US8490232B2 · kind B2 · utility

Assignee

• L&P Property Management Company · US

Inventors

• David S. Haffner · Carthage, US
• John E. Hull · Monett, US
• Steven M. Montague · Carthage, US
• Darrell A. Richmond · Carthage, US
• Thomas W. Wells · Joplin, US

Key dates

• Filing date: Jun 23, 2010
• Grant date: Jul 23, 2013
• Expiry date: May 29, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A47C23/007
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

A bedding or seating product comprising a spring core including at least one border wire and a plurality of coil springs. Each of the border wires is generally rectangular in cross-section to reduce wire costs without compromising beam strength of the border wire. Each of the coil springs may be made of a single piece of wire having a central spiral portion defining a central spring axis and terminating at opposed ends with upper and lower end turns. The coil springs may be arranged in side-by-side rows and columns and be connected with each other at the upper and lower end turns by helical lacing wires.