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Title:
SECONDARY BATTERY PACK, POWER TOOL
Document Type and Number:
WIPO Patent Application WO/2012/114749
Kind Code:
A1
Abstract:
A power tool system (2) includes: a secondary battery (1); a capacitor (8) configured to supply a power to a motor (21); and a transforming unit (5) configured to boost a battery voltage of the secondary battery to a charging voltage, the capacitor being charged with the charging voltage.

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Inventors:
SAITOU KEITA (JP)
TAKAHASHI SHIGERU (JP)
WATANABE SHINJI (JP)
Application Number:
PCT/JP2012/001228
Publication Date:
August 30, 2012
Filing Date:
February 23, 2012
Export Citation:
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Assignee:
HITACHI KOKI KK (JP)
SAITOU KEITA (JP)
TAKAHASHI SHIGERU (JP)
WATANABE SHINJI (JP)
International Classes:
H02J7/00; B23B45/00; B25F5/00; H01M10/44
Foreign References:
US20090096416A12009-04-16
US20060133007A12006-06-22
US20060108980A12006-05-25
US20090108806A12009-04-30
US20030214269A12003-11-20
US20090289589A12009-11-26
JP2008178278A2008-07-31
Attorney, Agent or Firm:
KITAZAWA, Kazuhiro et al. (31-14 Yushima 2-chome, Bunkyo-k, Tokyo 34, JP)
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Claims:



 
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