Patent · US Active

System for stabilizing the top lamella against wind load by using a linear chain

US8985179B2 · kind B2 · utility

1Cited by

18References

10Claims

0Family size

Assignee

Assa Abloy Entrance Systems AB · SE

Inventors

Meinolf Steffen · Paderborn, DE
Holger Siewert · Rheda-Wiedenbrück, DE
Friedhelm Frede · Erwitte, DE

Key dates

Filing date	Sep 25, 2009
Grant date	Mar 24, 2015
Priority date	—
Expiry date	Feb 21, 2033

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE06B9/15
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A mechanical link is provided to lessen or eliminate air infiltration between a topmost lamella of a rollup door and the lintel of the doorway. The link is deployed in an unfolded configuration to support the topmost lamella against deflection caused by application of a force perpendicular to the plane of the door. The link components are folded into a storage position upon rolling up of the door upon a series of take-up discs.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.