Mining or in situ disintegration of hard material – Hard material disintegrating machines – With material-handling means
Patent
1978-11-29
1980-08-12
Purser, Ernest R.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
With material-handling means
125 23R, 144 34E, 241 30, 299 85, E21C 3700
Patent
active
042170001
ABSTRACT:
A device for breaking and crushing reinforced concrete and also shearing off steel bars or the like embedded therein or exposed therefrom after concrete has been torn off. The device comprises in general a frame, a cutter assembly or unit and a hydraulic actuator for operating the cutter assembly. The cutter assembly comprises a stationary cutting blade securely attached to the frame and a movable cutting blade pivotably attached to the frame and operatively coupled to the hydraulic actuator so that the movable cutting blade may move toward and away from the stationary cutting blade. The stationary and movable cutting blades clamp concrete and steel bars or the like embedded therein between them and crush concrete and shear off the steel bars or the like simultaneously as the movable cutting blade is forced to move toward the stationary cutting blade. (Both the stationary and movable cutting blades may be formed with jaws integrally thereof so that the jaws may also crush concrete and/or securely clamp it between them while the cutting blades break and crush concrete and/or shear off the steel bars or the like.)
REFERENCES:
patent: 2878002 (1959-03-01), Haley
patent: 3026865 (1962-03-01), Sunada
patent: 3325927 (1967-06-01), Mullin
patent: 3627004 (1971-12-01), Ramey
patent: 3720359 (1973-03-01), Cox
patent: 3722114 (1973-03-01), Knell et al.
patent: 3814152 (1974-06-01), Pallari
patent: 3980341 (1976-09-01), Musannif et al.
patent: 4131144 (1978-12-01), Fischer
Jecies Saul
Purser Ernest R.
Watanabe Kaitai Kogyo K.K.
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