The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 11, 1995
Filed:
Sep. 29, 1993
Webasto-Schade GmbH, Oberpfaffenhofen, DE;
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%.