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:
Nov. 13, 2001
Filed:
Nov. 08, 2000
Eckhard Lindemann, Raisdorf, DE;
Thomas Zelenka, Mönkeberg, DE;
Heidelberger Druckmaschinen, Heidelberg, DE;
Abstract
A device for detecting the position of rotating objects, having an optical signal transmitter and an optical sensor, includes a stationary light source provided in the optical signal transmitter for generating along an optical axis a light beam directed onto a rotating object, the optical sensor being stationary and being arranged on the optical axis on a side of the rotating object located opposite the optical signal transmitter, in the region of the optical axis of the signal transmitter and the sensor, the rotating object being formed with a diametrically extending bore having an entrance window for the light beam and an opposite exit window for the light beam, a slit diaphragm arranged in vicinity of the exit window, and an objective for focusing the light beam onto the slit diaphragm arranged in vicinity of the entrance window, the slit of the slit diaphragm being aligned with a transverse extent thereof at least approximately perpendicularly to an axis of rotation of the rotating object.