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. 30, 1976
Filed:
Mar. 25, 1975
Wolfgang Angersbach, Darmstadt, DT;
Karl-Heinz Meier, Zeilhard, DT;
Quick-Rotan Becker & Notz KG, , DT;
Abstract
A transmitter for determining the speed of rotation and the angular position of a rotating member, such as a shaft, in which a coding disc is driven synchronously with the shaft and has a series of circularly distributed light and dark areas which cooperate with two sections of alternating light and dark areas formed by a coding segment which is fixed relative to the disc. The pitch of the light and dark areas of the coding segment is equal to the pitch of the light and dark areas of the coding disc, respectively, and the light and dark areas of one section of the coding segment are staggered relative to the light and dark areas of the other section thereof. A light is passed towards the coding disc and the coding segment and at least one photosensitive receiver is in the path of the light passing through the light areas for generating an output signal.