Excavating – Combined or convertible – Having quick-connect coupling
Reexamination Certificate
2011-06-21
2011-06-21
Will, Thomas B (Department: 3671)
Excavating
Combined or convertible
Having quick-connect coupling
C172S272000
Reexamination Certificate
active
07963054
ABSTRACT:
A coupling apparatus having a device for automatic connection of power lines, in particular of hydraulic lines, for the attachment of working tools to a tool mount of a excavator boom by means of a quick-action coupling, wherein, in order to connect the tool mount to the working tool, the quick-action coupling has a hook connection and a blocking unit with a movable bolt element which is operated by an actuating unit. Supply connecting pieces are fixed to the tool mount, and the corresponding power take-off connecting pieces of the working tool are fixed on a mount, which is mounted on the working tool such that it can move between a moved-forward position and a drawn-back position, wherein the mount has a driver piece for engagement with an operating element which is coupled to the movable bolt element. When the blocking unit is closed, the power take-off connecting pieces are connected to the corresponding supply connecting pieces and, when the blocking unit is open, they are detached from the supply connecting pieces.
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Greisberger Erich
Wimmer Alois
Greenberg Laurence A.
Locher Ralph E.
McGowan Jamie L
Stemer Werner H.
Will Thomas B
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