Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Patent
1979-01-24
1981-01-06
Reynolds, Wm. Carter
Tool driving or impacting
Drive by means reacting to rotating eccentric mass
60419, 60429, 299 70, E21C 500
Patent
active
042431077
ABSTRACT:
An improved arrangement for operating a hydraulic hammer at a distance from the hydraulic supply. The hydraulic hammer which can be used for breaking rocks, concrete, and the like is disposed at the end of a movable boom, remote from its pressurized hydraulic supply. The hammer is connected to the pressurized hydraulic supply by flexible lines and is movable with respect to the pressurized supply. Disposed in series in the pressurized hydraulic supply line is a hydraulic motor. The hydraulic motor is mounted in close proximity to the hydraulic hammer at the end of the boom. The outlet port of the hydraulic motor connects to the inlet port of the hydraulic hammer. The hydraulic motor drives a suction pump which is also located at the end of the positionable boom. The hydraulic motor and the suction pump are movable with a mounting assembly which supports the hydraulic hammer at the end of the boom. The suction inlet of the hydraulic pump is directly connected to the outlet port of the hydraulic hammer. The back pressure at the outlet port of the hydraulic hammer is thus completely eliminated. The hydraulic pump forces the operating hydraulic fluid along a return line to a sump. The disclosed arrangement improves the operation of the hydraulic hammer and reduces the size of the required hydraulic return lines.
REFERENCES:
patent: 1795108 (1931-03-01), Degenhardt et al.
patent: 2983496 (1961-05-01), Grant
patent: 3090983 (1963-05-01), Modrak et al.
patent: 3460691 (1969-08-01), Wieger et al.
Massung Howard G.
Reynolds Wm. Carter
The Warner & Swasey Company
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