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LUBRICATION PUMP

  • US 20140007468A1
  • Filed: 07/09/2013
  • Published: 01/09/2014
  • Est. Priority Date: 07/09/2012
  • Status: Active Grant
First Claim
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1. A dipper assembly for a mining shovel, the mining shovel including a fluid source, the dipper assembly comprising:

  • a body defining an opening;

    a door pivotably coupled to the body to selectively close the opening;

    an arm including a first end pivotably coupled to the body and a second end pivotably coupled to the door, the movement of the door relative to the body driving the arm to pivot relative to the body;

    a housing coupled to one of the body and the door, the housing including an inlet configured to be in fluid communication with the fluid source, an outlet, and a cylinder partially defining a pump chamber in fluid communication with the inlet and the outlet; and

    a piston movable within the cylinder and biased in a first direction, the pivoting movement of the arm causing the piston to move in a second direction opposite the first direction, the movement of the piston changing a volume of the pump chamber.

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