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Dynamically active dipper door mechanism

  • US 6,467,202 B1
  • Filed: 06/29/2000
  • Issued: 10/22/2002
  • Est. Priority Date: 07/01/1999
  • Status: Expired due to Term
First Claim
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1. A dipper assembly comprising:

  • a dipper having an open bottom, an open top, and closed sides;

    a door pivotally linked to said dipper, and having an open position and a closed position, wherein in said closed position, said door closes said dipper bottom;

    a linear actuating mechanism linked to said door for controlling said door as it moves between said open and closed positions; and

    a linkage actuated by said linear actuating mechanism, said linkage including a first link having a first end and a second end, said first end being pivotally linked to said door and said second end being pivotally linked to one end of a second link and a rod of said linear actuator, said second link including said second link one end and an opposing end pivotally linked to a point fixed relative to said dipper, wherein actuation of said linear actuator controls said door as it moves between said open and closed positions.

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