Backrest for a seat arrangement

US5649739A · kind A · utility

Inventor

• Otto Zapf · Königstein, DE

Key dates

• Filing date: Jun 4, 1996
• Grant date: Jul 22, 1997
• Expiry date: Jun 4, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65D88/121
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

A backrest for a seat includes an upper back portion having an integral, central extension, a lower back portion having a central cut-out, and hinges for pivotally connecting the upper and lower back portions together to permit free swinging movement of the extension through the cut-out about a pivot axis situated at a level above the extension so that substantially the entire extension can come out of the cut-out in a reclined position of the upper back portion to support the lower back of the seat occupant. The extension may be provided with a central recess separating two lateral prongs from one another, and an elastic band may then be used to span the recess between the prongs.