Tool driving or impacting – Drive adjustable to completely change kind of drive – Adjustable to impacting device
Reexamination Certificate
2011-04-26
2011-04-26
Nash, Brian D (Department: 3721)
Tool driving or impacting
Drive adjustable to completely change kind of drive
Adjustable to impacting device
C173S093600, C173S104000
Reexamination Certificate
active
07931095
ABSTRACT:
In a hammer drill, a coil spring is disposed rearward of a piston cylinder inside a housing so as to press the piston cylinder to an advanced position when the hammer drill operates in a drill mode, and a supporting plate is disposed at a rear end of the piston cylinder. The supporting plate includes a pair of side plates and a base portion connecting front ends of the side plates. The base portion is in contact with a rear surface of the piston cylinder, and rear ends of the side plates are in contact with a front end of the coil spring. Openings provided in the side plates are configured to hold a pin on which a connecting arm is pivoted.
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Extended European Search Report issued in European Patent Application No. 09008626.5 on Oct. 2, 2009.
Machida Yoshitaka
Yoshikane Kiyonobu
Makita Corporation
Nash Brian D
Oliff & Berridg,e PLC
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