High load operation of an industrial roll door

US7252133B2 · kind B2 · utility

Assignee

• Albany International Corp · US

Inventors

• Mikael Bengtsson · Eldsberga, SE
• Håkan Larsson · Halmstad, SE
• Raymond Sauve · Stone Mountain, US
• Holger Siewert · Rheda-Wiedenbrück, DE
• Jan Victor · Knokke, BE
• Kent Palsson · Gothenburg, SE

Key dates

• Filing date: May 4, 2004
• Grant date: Aug 7, 2007
• Expiry date: Feb 11, 2025

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E06B9/62
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A high load operation industrial roll door, including a flexible door curtain windable about a top roll positioned above a door opening and provided with a drive system. The roll door includes a bottom beam fastened to the door curtain, and a biasing spring, for resisting movement of the door upon application of a load thereon, and a positive stop preventing movement of the biasing means beyond a predetermined point.