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:
May. 01, 2001
Filed:
Jun. 30, 1999
Haiko Glienicke, Salz, DE;
Preh-Werke GmbH & Co. KG, Bad Neustadt/Saale, DE;
Abstract
A rotatable knob for a control apparatus which is less complex than similar devices and which provides greater self-illumination than do similar devices. In the case of the present rotatable knob, a total reflection surface (,) is established wherein the obverse side (,) of the total reflection surface (,) forms a mantle of a conical or cup-shaped frustum upon which segment-like 90° prisms (,) are radially arranged. Accordingly, the present rotatable knob may be used in operational components for radios, air conditioning units, and the like in motor vehicles.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile