Reseña del libro "Rock Crushers Inventions"
In 1979, S.I. Fishgal made his rock crushers inventions for, but did not assign to Joy Manufacturing Co. (Pittsburgh, PA). The crushers were transmission, fluid-driven and impact ones as follows: Double-Acting Single and Dual Eccentric, Cam Cone and Jaw, Arcuated-Jaw, Twin-Jaw, Coil Cone, Toothed Gyratory, Horizontally Fed Single and Dual Swing Jaw, Roll Jaw, Multi-Roll, Multi-Eccentric Jaw, Eccentric Twin-Jaws, Hydraulic Cone, Gyratory and Jaw, Fluid-Actuated Gyratory and Jaw, Expansionary Actuators, Blasting Jaw, Combustion, Electric Steam