Invention Grant
- Patent Title: Resonant actuator using magnetic action for a power toothbrush
- Patent Title (中): 使用磁力作用的电动牙刷的共振致动器
-
Application No.: US13822394Application Date: 2011-09-19
-
Publication No.: US08970141B2Publication Date: 2015-03-03
- Inventor: Pieter Johannes Bax , Johannes Hotze Bernhard De Vries , Jurriaan Bernhard Rudolf Leveling , Gert Westrup , Sepas Setayesh , Folkert Vrijburg
- Applicant: Pieter Johannes Bax , Johannes Hotze Bernhard De Vries , Jurriaan Bernhard Rudolf Leveling , Gert Westrup , Sepas Setayesh , Folkert Vrijburg
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips N.V.
- Current Assignee: Koninklijke Philips N.V.
- Current Assignee Address: NL Eindhoven
- International Application: PCT/IB2011/054082 WO 20110919
- International Announcement: WO2012/042427 WO 20120405
- Main IPC: H02K33/00
- IPC: H02K33/00 ; H02K33/18 ; A61C17/34 ; H02K33/16 ; H02P25/02

Abstract:
A magnetic actuator system which includes a case (10) and a spindle (22) which extends through the case comprising a magnetizable material such as iron. The actuator further includes a pair of permanent magnet assemblies (14, 16) positioned fixedly within the casing with a longitudinal space there between, wherein the permanent magnet assemblies comprise an alternating plurality of north pole/south magnet sections (18) which extend longitudinally or circumferentially of the actuator. The actuator further includes a coil winding (24) which surrounds the spindle, positioned between the two permanent magnet assemblies. Magnetic pole assemblies (28, 30) attached to the spindle are positioned within the volume encompassed by the permanent magnet assemblies, such that an alternating drive signal produces an oscillating action of the spindle of desired frequency and amplitude.
Public/Granted literature
- US20130207575A1 RESONANT ACTUATOR USING MAGNETIC ACTION FOR A POWER TOOTHBRUSH Public/Granted day:2013-08-15
Information query