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:
Apr. 11, 1978
Filed:
Jun. 22, 1976
Bernard Grancoin, Paris, FR;
Thomson-CSF, Paris, FR;
Abstract
A system for the synhchrotransmission of angular position data between two rotating shafts, using, as the transmitter and receiver, two two-phase Hall effect motors, of which each rotor 2, 52 has a permanent magnet and each stator is formed by two windings 54,54, 73,74, and two Hall effect magnetic sensors 3,4, 23,24, arranged in pairs at a right angle. The electrical signals created by the sensors of the transmitter and the receiver are introduced into comparator circuits 19,29 so as to produce, in the event of angular position differences between the rotors, an error signal which after amplification 40, 41 is applied to the windings 53,54 of the receiver, thus eliminating the position difference by the creation of a torque.