Electric power tool

United States of America Patent

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Jun 8, 2004
Grant Date
Sep 25, 2003
app pub date
Dec 18, 2002
filing date
Mar 20, 2002

priority date (Note)
Expired

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Abstract

In an electric power tool having a clutch ring for adjusting a fastening torque, an outer member 3 which are lower in hardness than a base member 2 of the clutch ring 1 has a plurality of projections discontinuously arranged on the outer peripheral face of the base member 2.

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Patent Owner(s)

Patent Owner	Address
HITACHI KOKI CO LTD	JAPAN

International Classification(s)

B25B:TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR,....

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Adachi, Yoshiaki	Ibaraki, JP	33	473
Eto, Yasuo	Ibaraki, JP	1	49
Kurosawa, Hideki	Ibaraki, JP	3	111
Takaada, Kenichi	Ibaraki, JP	4	94

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Electric power tool

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United States of America Patent

10321556

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PATENT NO	6745883
APP PUB NO	20030178280A1
SERIAL NO	10321556
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
June 08, 2004	US,6745883,B2 US6745883B2	GRANTED PATENT AS SECOND PUBLICATION
September 25, 2003	US,20030178280,A1 US20030178280A1	FIRST PUBLISHED PATENT APPLICATION

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10321556

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