Antonelli, Terry, Stout & Kraus
Fluid pressure feeding apparatus
 A fluid pressure feeding apparatus for feeding cold water for cooling a mining pit into the pit and pumping water and muddy water heated within the mining pit onto the ground. A controller for switching a number of the operative chambers is provided to thereby perform a continuous operation. 
Hitachi, Ltd.
Y E E
Y10T E21F E21F
additional inventional inventional
Yukishige Kenji Makoto
Kamino Uchida Saito