Invention Grant
- Patent Title: Power tool with high-speed electric motor
- Patent Title (中): 电动工具带高速电动机
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Application No.: US14155358Application Date: 2014-01-15
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Publication No.: US09364906B2Publication Date: 2016-06-14
- Inventor: Kenji Abe , Masayoshi Okumi , Hidenori Nagasaka , Motohiro Omura , Masaaki Fukumoto , Kenji Shibata , Nobuyasu Furui , Masanori Higashi , Kiyoshi Aoyama
- Applicant: MAKITA CORPORATION
- Applicant Address: JP Anjo-Shi
- Assignee: MAKITA CORPORATION
- Current Assignee: MAKITA CORPORATION
- Current Assignee Address: JP Anjo-Shi
- Agency: J-TEK LAW PLLC
- Agent Jeffrey D. Tekanic; Scott T. Wakeman
- Priority: JP2013151806 20130722
- Main IPC: H02K7/14
- IPC: H02K7/14 ; B23D47/12 ; B24B23/02 ; B24B47/12 ; B25F5/02

Abstract:
A hand-held power tool includes a motor having a stator and a rotor, the motor being configured to rotate the rotor at a speed of at least 40,000 rpm, an output shaft directly driven by the rotor, a tool accessory shaft configured to support a tool accessory, and a two-stage speed reducing transmission operably connecting the output shaft to the tool accessory shaft. The two-stage speed reducing transmission is configured to drive the tool accessory shaft at a rate less than the rotor speed, for example, at a rate less than or equal to 37.5% of the rotor speed.
Public/Granted literature
- US20150020391A1 Power Tool with High-Speed Electric Motor Public/Granted day:2015-01-22
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