Patent attributes
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).
