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. 20, 2021
Filed:
Feb. 08, 2019
Lofelt Gmbh, Berlin, DE;
Amir Berrezag, Berlin, DE;
Daniel Büttner, Berlin, DE;
Lofelt GmbH, Berlin, DE;
Abstract
A vibrating actuator is disclosed, comprising: a magnetic part including at least two magnets arranged with same polarities facing each other; a receiving part including a hollow member with a cavity for receiving the magnetic part and at least one coil wrapped around the hollow member and fixed thereto; elastic elements interconnecting the magnetic part and the hollow member; and a chassis. In one aspect, the magnetic part is fixed to the chassis via attachment elements such that the magnetic part, attachment elements and chassis are stationary, and the receiving part performs a linear movement with changing direction causing the vibration when an alternating current passes through the coil(s). In another aspect, the elastic elements are flat elastic metal or plastic membranes. In another aspect, a magnetic guidance member of ferromagnetic material partly surrounding the hollow member and coil(s) is mounted to the longitudinally outer ends of the magnetic part.