B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
B25D 9/00 (2006.01) B25D 9/14 (2006.01)
Patent
CA 2075403
ABSTRACT OF THE DISCLOSURE A hydraulic striking device requiring no complicated adjustment of the flow rate of hydraulic fluid from the hydraulic pressure source of a hydraulic construction machine, etc. and operable by utilizing the power unit of a variety of such hydraulic machines. The adjusting valve (8) is disposed inside the main body near the control valve (5) and used to restrict the flow of hydraulic fluid ejected from the upper piston chamber (16) and passed through the control valve (5) with respect to the pressure of the hydraulic fluid supplied into the upper chamber (12) before flown from the outlet (11) to control the pressure in the upper piston chamber (16). Thus, a nearly constant, appropriate operating pressure can automatically be maintained irrespectively of the flow rate of the hydraulic fluid supplied from outside.
Maruzen Kogyo Company Limited
Swabey Ogilvy Renault
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