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:
Jun. 03, 1997
Filed:
Dec. 23, 1994
Toru Fujita, Chiryu, JP;
Kozo Hattori, Kuwana, JP;
Yukihiro Nishio, Chiryu, JP;
Takashi Sato, Obu, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A motor for electric pumps which can easily prevent unbalance caused by the eccentricity of an armature shaft when the motor is in rotation by forming holes in a plurality of armature core sheets. In the motor for electric pumps with an armature shaft forming the spindle of the motor and being provided with an eccentric portion for driving a piston pump, hole portions are provided in a plurality of core sheets fit on the armature shaft. The hole portions are formed such that eccentricity of the armature shaft due to the eccentric portion can be offset. The hole portions are provided in positions where the unbalance caused by both the eccentric portion and the piston pump that is driven by the eccentric portion are offset, or at least the unbalance forces generated during rotation are minimized.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile