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:
Sep. 08, 1987
Filed:
Aug. 05, 1986
Gerhard Falk, Rossdorf, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A ring-connected d-c brushless stator winding has winding sections (I, II . . . XI), serially connected by junctions (1, 2 . . . 11) and selectively and sequentially connected to a source of d-c power (15, 16) by controlled switches (20, 21), the connection of the switches being selectively controlled by a logic network responsive to a rotor position sensor (26). In accordance with the logic, when the rotor position sensor senses that the rotor is in alignment with a junction, the respective junction is connected to one terminal and, through the logic, which includes an OR-gate (28), a NOR-gate (29) and an AND-gate (30) which receive input signals from sensors associated with other junctions, the junction beneath the sensor sensing the rotor at the position is connected to one terminal of the source, whereas junctions effectively 180.degree.-electrical displaced are connected by the switches controlled by the logic, to the other d-c terminal; as the rotor moves, the field travels around the ring stator.