Tool driving or impacting – Including means to vibrationally isolate a drive means from...
Reexamination Certificate
2006-10-24
2006-10-24
Gerrity, Stephen F. (Department: 3721)
Tool driving or impacting
Including means to vibrationally isolate a drive means from...
C173S211000
Reexamination Certificate
active
07124840
ABSTRACT:
An engine breaker includes a vertically extending cylindrical main body (1), a work member (2) supported by a lower portion of the main body for up and down movement, an engine (5) mounted to an upper portion of the main body and having an output shaft arranged to extend horizontally, and a striker (30) incorporated in the main body (1) for successively striking an upper end of the work member (2) through rotation of a horizontally extending rotary shaft (6) to which rotation output of the engine (1) is transmitted. The engine (5) includes a housing (5a) supported by the main body (1) via a resilient member (8), and a flexible coupling (9, 9A,9B) for absorbing vibration in a direction crossing the rotary shaft (6) is interposed between the output shaft (52) and the rotary shaft (6).
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Durand Paul
Gerrity Stephen F.
Hamre Schumann Mueller & Larson P.C.
Yamada Machinery Industrial Co., Ltd.
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