Patent · US Expired

Vehicle roof with light transmissive cover

US5405184A · kind A · utility

14Cited by

7References

10Claims

0Family size

Assignee

Webasto-Schade GmbH · DE

Inventors

Hans Jardin · Herrsching am Ammersee, DE
Stefan Hauser · Oberndorf am Neckar, DE
Werner Patz · Freising, DE

Key dates

Filing date	Sep 29, 1993
Grant date	Apr 11, 1995
Priority date	—
Expiry date	Sep 29, 2013

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE06B2009/2405
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The invention relates to a vehicle roof having a light-transmissive cover, which has at least one outside panel, and having a device for varying the light-transmissibility of the cover. A light-transmissive cover of flat construction and easy actuation, whose light transmissibility can be steplessly regulated over a wide range, is achieved by integrating a device of darkening elements into a transparent cover, which is of extremely flat construction, is lightweight, mechanically easy to activate, and has a short regulating distance. Especially advantageous is a device whose darkening elements are formed by two superposed polarization films that are movable relative to each other. Such a configuration facilitates a particularly flat construction, and the light transmissibility of the cover is practically steplessly adjustable in a range of 0%-100%.

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