Tool driving or impacting – Combined
Patent
1986-02-28
1988-01-19
Bell, Paul A.
Tool driving or impacting
Combined
414912, 414740, E21C 3700
Patent
active
047199750
ABSTRACT:
A rotating hammer-shear for releasable attachment to the boom structure and hydraulic system of a hydraulic excavator for the demolition of concrete structures. The hammer-shear having a heavy duty power operated shear and hammer secured to and extending from opposite ends of a common frame. The frame includes a rotational mounting. The rotational mounting provides for rotation of the hammer-shear through an arc of 360.degree. about an axis essentially perpendicular to the line of longitudinal extension of the shear and hammer from the frame. The rotational mounting also provides for pivotal attachment of the hammer-shear to the boom structure and hydraulic system of the excavator.
REFERENCES:
patent: 4017114 (1977-04-01), LaBounty
patent: 4466494 (1984-08-01), Hanson
patent: 4519135 (1985-05-01), LaBounty
Bell Paul A.
Wolfe James L.
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