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AssigneeQuick-Rotan Becker & Notz KG
InventorsWolfgang Angersbach, Karl-Heinz Meier
Estimating the term…
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.
A transmitter for governed-speed drive systems, comprising a drive shaft, a coding disc driven synchronously with said shaft and having a series of circularly distributed light and dark areas, a coding segment disposed adjacent said coding disc and consisting of two sections of alternating light and dark areas, the pitch of which is equal to the pitch of said light and dark areas of said coding disc, respectively, the light and dark areas of one section of said coding segment being staggered relative to the light and dark areas of the other section thereof, means for passing a light towards said disc and said segment, and at least one photosensitive cell disposed in the path of the light passing through said light areas for generating an output signal, the photosensitive surface of said cell being substantially rectangular, with its longitudinal axis of symmetry subtending an angle of approximately 45.degree. with respect to the corresponding radius of said coding disc.
Dependencies are inferred from the claim text.