Ergonomically designed chair

US4032190A · kind A · utility

Assignee

• Fehlbaum & Co. · CH

Inventors

• Wolfgang Muller-Deisig · Borgentreich, DE
• Egon Brauning · Weil am Rhein, DE

Key dates

• Filing date: Jun 7, 1976
• Grant date: Jun 28, 1977
• Expiry date: Jun 7, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S297/02
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

The chair has a back rest provided with stiffening means which impart to the back rest a substantially stiff form up to about the level of the sixth lumbar vertebra of the chair occupant, thus ensuring a continuous transition from the chair seat to the back rest, but allow the back rest an increasingly greater flexibility from said level upwards with the result that the upper part of the back rest bends backwards when the occupant leans back, further characterized in that the upper end of the back rest is joined to the shoulder rest via a bracing corrugation in order to ensure that the chair profile in the region of the occupant's shoulder is a smooth curve matching that of the occupant's spine.