Invention Grant
- Patent Title: Fuel pump
- Patent Title (中): 燃油泵
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Application No.: US12946706Application Date: 2010-11-15
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Publication No.: US08647082B2Publication Date: 2014-02-11
- Inventor: Hiroaki Naito , Kazumichi Hanai
- Applicant: Hiroaki Naito , Kazumichi Hanai
- Applicant Address: JP Obu-Shi, Aichi-Ken
- Assignee: Aisan Kogyo Kabushiki Kaisha
- Current Assignee: Aisan Kogyo Kabushiki Kaisha
- Current Assignee Address: JP Obu-Shi, Aichi-Ken
- Agency: Vierra Magen Marcus LLP
- Priority: JP2009-261208 20091116
- Main IPC: H02K21/38
- IPC: H02K21/38

Abstract:
A fuel pump may include a motor section comprising a rotor and a stator. One of the rotor and the stator may have at least a pair of permanent magnet parts disposed along a first circumferential surface at an interval in a circumferential direction, and at least two magnetic material parts disposed between ends of adjacent permanent magnet parts. The other one of the rotor and the stator may have a first yoke disposed so as to face the permanent magnet parts, wherein a plurality of slots are formed on the first yoke at an interval in the circumferential direction. A surface facing the slots of the magnetic material parts may be shifted, in at least a partial range in the circumferential direction including a permanent magnet part side end where a polarity of a first circumferential surface side is a north pole, from the first circumferential surface in a direction along which a distance to the slots increases.
Public/Granted literature
- US20110116955A1 FUEL PUMP Public/Granted day:2011-05-19
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