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:
Jun. 27, 1989
Filed:
Jul. 06, 1987
Thomas Nebhuth, Coburg, DE;
Herbert Loehner, Kueps, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A solar protection device includes slats of refractive material rotatable about a longitudinal axis, having an even, flat upper side and having on their lower side prisms arranged serially without gaps and running parallel to the longitudinal axis. In order to maintain the condition for retroreflection with variations of the sun's position, the angle of inclination to the horizontal of the slats must be readjusted from time to time, at least seasonably. For automatic adjustment thereof a light sensing arrangement of two light sensors arranged oppositely on both cathetal legs of one of the prisms whose hypotenuse is formed by the upper side of the rotatable slat. Control by a drive and associated electronics is undertaken and continued as long as solar rays impinge on one of the light sensors with intensity exceeding a predetermined illumination level.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile