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:
Jul. 03, 1984
Filed:
Nov. 03, 1981
Hans Baumgartner, Viersen, DE;
Pierburg GmbH & Co. KG., Neuss, DE;
Abstract
Rotary positioning apparatus for a member movable through an angle of rotation of less than 360.degree. comprising a rotor including windings thereon and a stator including a permanent magnet establishing a magnetic circuit providing magnetic flux through which the rotor is movable, the rotor and stator constituting a DC motor. The stator includes a stationary hollow shaft on which the rotor is rotatably supported by bearings. The rotor includes a neck adapted for being coupled with the member to be moved. A plurality of flexible current carrying wires extend through the hollow shaft and through slots provided in the neck to the windings for energization thereof. The hollow shaft has opposite open ends at one of which the wires enter the hollow shaft and at the other of which the wires exit from the shaft and extend through the slots to the windings such that the wires undergo twisting within the confines of the shaft as the rotor rotates with respect to the stator.