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:
May. 11, 2010
Filed:
Mar. 16, 2006
Yuji Enomoto, Hitachi, JP;
Motoya Ito, Hitachinaka, JP;
Kenji Miyata, Hitachinaka, JP;
Chio Ishihara, Tokyo, JP;
Ryoso Masaki, Hitachi, JP;
Yasuaki Motegi, Kiryu, JP;
Kouki Isozaki, Kiryu, JP;
Tadashi Sato, Nitta, JP;
Yuji Enomoto, Hitachi, JP;
Motoya Ito, Hitachinaka, JP;
Kenji Miyata, Hitachinaka, JP;
Chio Ishihara, Tokyo, JP;
Ryoso Masaki, Hitachi, JP;
Yasuaki Motegi, Kiryu, JP;
Kouki Isozaki, Kiryu, JP;
Tadashi Sato, Nitta, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Hitachi Powdered Metals Co., Ltd., Matsudo-shi, JP;
Japan Servo Co., Ltd., Tokyo, JP;
Abstract
In a multiple phase claw pole type motor which includes: a plurality of claw poles including a claw portion extending in an axial direction and having a magnetic pole surface facing a rotor in a state of being separated from the rotor by a small gap, a radial yoke portion extending radially outwardly from this claw portion, and an outer peripheral yoke extending from this radial yoke portion in the same direction as the direction of extension of the claw portion; a stator core formed by alternately placing the claw poles in a circumferential direction so that a distal end of each claw portion faces the outer peripheral yoke of an adjacent one of the claw poles; and a stator constructed by sandwiching an annular coil with the adjacent claw poles of this stator core, a multiple phase claw pole type motor characterized in that the claw poles are formed by compacting a magnetic powder and are formed of a magnetic compact having a DC magnetizing property of its flux density becoming 1.7 teslas or more when 10000 A/m of magnetic field is applied.