Maguire Products Inc. has received U.S. patent No. 8092070 for a pneumatically powered system that speeds job or color changes for gravimetric blenders with loaders mounted atop the hopper lid.
The Aston, Pa.-based auxiliary equipment maker calls it the Loader Lift. At the touch of a switch, it lifts the hopper. There is no need to remove the loaders feeding them.
Two safety features prevent the operator from having fingers caught if they are resting on top of the bins when the lid is lowered: The lid cannot be lowered unless the operator presses two buttons simultaneously. Also, a large rubber flange from the rim of each bin leaves more than enough room for fingers, even if the lid were fully lowered, the company said.
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