B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
138/40.14
B25D 9/12 (2006.01) B25D 9/18 (2006.01) B25D 9/26 (2006.01)
Patent
CA 1135156
ABSTRACT OF THE DISCLOSURE A hydraulic apparatus for generating impacts com- prising primary members having striking and control apparatus which is made up of a plunger which moves reciprocatingly, for striking a tool, inside a housing having an intermediate working zone which has a single inner diameter. An interme- diate part making up a piston of the plunger fits therein and has a corresponding single diameter. There is no flow of fluid between these two members and the movement of the plunger is controlled by secondary members and tertiary members which are located in respective housings which make up several chambers, and in which the corresponding plungers are recipro- catingly movable. The apparatus further includes means for discharging the fluid under pressure from within the apparatus for stopping its operation when the tool is not at rest on a workpiece 80 that the main plunger descends inside the housing to a point below its normal lower operating position.
324653
Garcia-Crespo Jose T.
Robic Robic & Associes/associates
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