Title:
HAMMER DRILL
Document Type and Number:
Japanese Patent JP2002264040
Kind Code:
A
Abstract:
To prevent idle hammering of a hammer so as to reduce weight of a machine body and improve durability.
A cutout part 18 is formed on a tool holder 15 pin-connected with a rotating cylinder 1 to rotate with the cylinder 1 and a slide sleeve 3 is axial-movably mounted between the cylinder 1 and the cutout part 18 for opening/closing an air port 6 by the slide sleeve 3.
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Inventors:
HAGA HIROSHI
Application Number:
JP2001065864A
Publication Date:
September 18, 2002
Filing Date:
March 09, 2001
Export Citation:
Assignee:
HITACHI KOKI KK
International Classes:
B25D17/10; B23B45/16; B25D11/12; B25D16/00; (IPC1-7): B25D17/10; B23B45/16; B25D11/12; B25D16/00
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