Hydraulically operated impact motor

Details Hydraulically operated impact motor Hydraulically operated impact motor

B - Operations, Transporting

25

D

138/40.13

B25D 9/12 (2006.01) B25D 9/14 (2006.01) B25D 9/26 (2006.01)

Patent

CA 1135155

Abstract of the Disclosure A hydraulically operated impact motor, e.g. for a jack hammer, has a hammer piston that has a piston surface 19 in a pressure chamber 21 which is constantly; pressurized in order to effect the work strokes of the hammer piston, and a larger piston surface 20 in a second pressure chamber 21 which is intermittently pressurized in order to effect the return strokes of the hammer piston. The second pressure chamber 22 is also connected to the exhaust line via a one-way valve that permits flow towards the second pressure chamber 22.

337956

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