Patent · US Expired

Device for protection from the sun

US4993469A · kind A · utility

27Cited by

14References

25Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventor

Julius Moench · Wendelstein, DE

Key dates

Filing date	Mar 23, 1989
Grant date	Feb 19, 1991
Priority date	—
Expiry date	Mar 23, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S160/90
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A vertical Venetian blind employs a plurality of slats adapted to be moved between an open position and a closed position. When the slats are in their closed position, pivotally mounted spacer bars maintain a predetermined center-to-center distance between adjacent slats. A rotatable drive shaft, which is employed to move the slats between their open and closed positions, can be supported along substantially its entire length by a bearing to thereby prevent the drive shaft from sagging.

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