Patent ID: 11952737
Assignee: GEITH INTERNATIONAL LIMITED
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A quick hitch coupler for coupling an attachment to a dipper arm of a machine, the quick hitch coupler comprising:
a body member adapted for coupling to the dipper arm,
a fixed engaging jaw mounted on the body member for engaging a first one of a pair of coupling pins mounted on the attachment,
a moveable engaging jaw mounted on the body member for engaging a second one of the pair of coupling pins of the attachment, the moveable engaging jaw being moveable between an engaged state with the moveable engaging jaw engaging the second coupling pin while the fixed engaging jaw engages the first coupling pin for coupling the attachment tothe coupler, and a disengaged state for disengaging the second coupling pin,
a latch co-operable with the fixed engaging jaw for retaining the first coupling pin of the attachment engaged in the fixed engaging jaw the latch being alternately operable in a latched state co- operating with the fixed engaging jaw for retaining the first coupling pin in the fixed engaging jaw, and an unlatched state for releasing the first coupling pin from the fixed engaging jaw,
an urging means for urging the latch into the latched state,
a release block being moveable on and relative to a guide, the release block being moveable on the guide between a non-active position in which the latch remains in the latched state and an active position where the release block abuts against the latch to move the latch from the latched state tothe unlatched state against the urging action of the urging means,
first and second biasing means mounted on the guide on opposing sides of the release block; and
a drive means generating an amount of displacement:
for moving the moveable engaging jaw from the engaged state tothe disengaged state, and
for moving the release block on the guide from the non-active position to the active position.