Tool driving or impacting – Including means to vibrationally isolate a drive means from... – Handle type holder
Reexamination Certificate
2007-08-07
2007-08-07
Rada, Rinaldi I. (Department: 3721)
Tool driving or impacting
Including means to vibrationally isolate a drive means from...
Handle type holder
C173S048000, C173S212000, C173S201000
Reexamination Certificate
active
10816532
ABSTRACT:
It is an object of the present invention to provide a power tool having a further improved vibration reducing performance. The representative power tool may comprise a tool bit, an actuating mechanism, a dynamic vibration reducer. The actuating mechanism drives the tool bit linearly by means of pressure fluctuations so as to cause the tool bit to perform a predetermined operation. The dynamic vibration reducer has a weight that reciprocates under a biasing force of an elastic element to reduce vibration of the actuating mechanism. The weight may be driven by means of pressure fluctuations caused in the actuating mechanism. According to the invention, the weight of the dynamic vibration reducer can be actively driven by pressure fluctuations in the actuating mechanism for driving the tool bit. Therefore, regardless of the magnitude of vibration acting on the power tool, the dynamic vibration reducer can be forcedly and steadily operated.
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European Search Report for Application No. EP04007681, dated Jan. 31, 2007.
Lahive & Cockfield LLP
Laurentano, Esq. Anthony A.
Lopez Michelle
Makita Corporation
Rada Rinaldi I.
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