Patent · US Active

Roller blind with noiseless flat spiral spring drive

US7874343B2 · kind B2 · utility

12Cited by

27References

43Claims

0Family size

Assignee

BOS GMBH & CO. KG · DE

Inventor

Melf Hansen · Gondelsheim, DE

Key dates

Filing date	May 7, 2007
Grant date	Jan 25, 2011
Priority date	—
Expiry date	Oct 9, 2028

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE06B9/78
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A spring motor having a pot shaped housing in which a flat spiral spring is housed. The flat spiral spring is connected at one outer end to the pot-shaped housing while the inner end is coupled to a shaft or axle. To prevent radial vibrations of individual spring layers when the spring motor is wound or unwound, a damping plate is housed in the pot-shaped housing and held in pressed engagement with a side edge of the flat spiral spring. This spring motor can be combined with the wind-up shaft of roller-blind arrangements for motor vehicles, including fixed roller blinds, storage-area covers, or separating screens.

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