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:
Oct. 12, 2010
Filed:
Apr. 27, 2007
Yoshihiro Taniyama, Tokyo, JP;
Yasuo Kabata, Yokohama, JP;
Hidekazu Shiomi, Chiba, JP;
Kenmei Shimanuki, Yokohama, JP;
Takaharu Tani, Yokohama, JP;
Shozo Abe, Yokohama, JP;
Yoshihiro Taniyama, Tokyo, JP;
Yasuo Kabata, Yokohama, JP;
Hidekazu Shiomi, Chiba, JP;
Kenmei Shimanuki, Yokohama, JP;
Takaharu Tani, Yokohama, JP;
Shozo Abe, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
It is an object of this invention to provide a dynamo-electric machine rotor which effectively and uniformly cools a rotor coil outside a rotor core by forming a ventilating groove in the rotor coil, tolerates large field current, and has high reliability. There is provided a dynamo-electric machine rotor in which spaced core slots are formed in a cylindrical rotor core, rotor coilsof stacked turns are fitted into the core slots to form multiple nested rings around a magnetic pole of the rotor, ends of the rotor coils are fixed by an retaining ring, and a spaceris arranged in each of circumferential gaps between the ends of the rotor coils, wherein each spacerhas a length not more than the lengths of linear portionsat the ends of corresponding ones of the rotor coils, a cut-outfor ventilation of coolant gas is formed across at least one of two sides of the spacer, and the spacer is in contact with the rotor coils at the two sides of the spacer at a position located furthest inside in the radial direction of the rotor and an arbitrary position.