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:
Jan. 13, 1998
Filed:
Jan. 25, 1996
Akira Tsunoda, Toyohashi, JP;
Hiroyuki Fujita, Hamamatsu, JP;
ASMO Co. Ltd., Shizuoka-ken, JP;
Abstract
An improved rotary actuator having a reduced height is disclosed. The actuator has a stator core having excitable poles and yokes, a rotor with a rotor magnet, a bobbin frame having a rotor container and bobbin portions with excitable coils. The rotor container has a bore for receiving the rotor and magnet openings for receiving a pair of stator magnets. Each bobbin portion has a slot for receiving the excitable pole. The yokes are placed at the both sides of the bobbin. The rotor container has magnetic pole slots extending in an axial direction of the rotary magnet, each of which is open to the bore and communicates with the associated pole receiving slot of the bobbin portion. Magnetic pole pieces are mounted in the magnetic pole slots. Each magnetic pole piece has a surface facing the rotor magnet and another surface magnetically connected to the stator core.