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:
Apr. 19, 2005
Filed:
Oct. 08, 2004
Yuzuru Suzuki, Shizuoka-ken, JP;
Sakae Fujitani, Shizuoka-ken, JP;
Naoyuki Harada, Shizuoka-ken, JP;
Kunitake Matsushita, Shizuoka-ken, JP;
Yuzuru Suzuki, Shizuoka-ken, JP;
Sakae Fujitani, Shizuoka-ken, JP;
Naoyuki Harada, Shizuoka-ken, JP;
Kunitake Matsushita, Shizuoka-ken, JP;
Minebea Co., Ltd., Nagano-Ken, JP;
Abstract
In order to reduce cost through reduction in material cost and improvement of productivity, in a linear type actuator comprising: a stator unit having coils consisting of wound magnet wires and housed inside stator sub-assemblies and pole teeth arranged on the inner circumference thereof; a rotor unit having a field magnet arranged on the outer circumference thereof and rotatably disposed so as to oppose the pole teeth with a given gap; an output shaft attached to a center portion of the rotor unit and movable in the axial direction thereof; and converting means provided on the innermost diametral circumferential surface of the rotor unit and adapted to convert rotary motion of the rotor unit into linear motion of the output shaft, the converting means is made of a material different from that of the rotor unit.