Box spring core with compartmentalized springs

US5319815A · kind A · utility

Assignee

• Schlaraffia-Werke Huser GmbH & Co. KG · DE

Inventors

• Walter Stumpf · Höchberg, DE
• Helmut Gerking · Bochum, DE

Key dates

• Filing date: Feb 8, 1993
• Grant date: Jun 14, 1994
• Expiry date: Feb 8, 2013

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A47C23/0438
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

A box-spring core has a first group of first chains extending spacedly adjacent and parallel to one another and a second group of second chains extending adjacent and parallel to one another and transversely of the first chains. Each of the chains has an elongated flexible sheath formed with a plurality of longitudinally spaced, transversely extending, and through-going slits that are each transversely aligned with the slits of adjacent sheaths, a transverse seam adjacent each slit and internally subdividing the respective sheath into a respective succession of longitudinally spaced pockets, and respective springs in the respective pockets each compressible in a transverse direction parallel to the slits. The springs have opposite ends lying generally in respective parallel planes. Each slit has a predetermined length measured perpendicularly between the planes and the combined lengths of a pair of interfitting slits are generally equal to the predetermined height.