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:
Mar. 25, 1986
Filed:
Oct. 20, 1983
Wilhelm Reinhardt, Schrozberg/Gutbach, DE;
Ulrich Rudele, Weissbach, DE;
Abstract
Electric motor with a system for speed monitoring, especially for ventilators, fans, blowers and compressors, where the speed is monitored with the help of a speed-proportional signal, consisting of a stator and a rotor which can rotate in the stator, where the system for speed monitoring consists of a permanent magnet (16) which is mounted in the front end (14) of the rotor (2) which faces the stator (3) and a detector (12) which can be triggered by the magnetic field of the permanent magnet and is located on a circle with its midpoint in the axis (4) of rotation of the rotor (2) and with a radius corresponding to the radius of the circular path of the permanent magnet (16).