Cutting by use of rotating axially moving tool – Tool-support – With tool-retaining means
Reexamination Certificate
2011-08-16
2011-08-16
Gates, Eric A (Department: 3726)
Cutting by use of rotating axially moving tool
Tool-support
With tool-retaining means
C279S019400, C279S019600, C279S075000, C279S144000, C279S901000, C279S905000
Reexamination Certificate
active
07997837
ABSTRACT:
It is an object of the invention to provide a technique in a power tool having a detachable bit holder for preventing a bit holder from being detached from the tool body even if unexpected external force is exerted on an operating member for lock release. A representative power tool includes a tool body, a single holder mounting portion. The holder mounting portion removably holds a bit holder selected from multiple kinds of bit holders for holding multiple kinds of tool bits in different manners. Each bit holder includes a cylindrical portion, a through hole formed through the cylindrical portion, an engaging member disposed within the through hole, a cylindrical operating member axially movably fitted on the cylindrical portion between a movement prevented position and a movement allowed position. The operating member is moved to the tool body side in order to be switched from the movement prevented position to the movement allowed position so that the holder mounting portion is allowed to be pulled out of the fitting hole.
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Furusawa Masanori
Kasuya Yoshihiro
Gates Eric A
Makita Corporation
Oliff & Berridg,e PLC
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