Quick coupler for excavation equipment
First Claim
1. A quick coupler for attaching a tool to an excavator comprising:
- a coupler body comprising a pair of spaced parallel plates, said plates defining means for fixed attachment of said quick coupler at the end of the excavator, said plates defining a first slot facing in a first direction, said first slot adapted for engagement upon a first pin on the tool, and a second slot facing in a second direction, said second slot adapted for engagement upon a second pin on the tool, the first pin and the second pin being substantially parallel, and a third plate, mounted between and substantially perpendicular to said pair of spaced parallel plates; and
a latch mechanisms mounted to said coupler body for securing engagement of said second slot upon the second pin, said latch mechanism comprising a coupler gate rotatably mounted on an axis transverse to a longitudinal axis of the second pin, so that the gate pivots about said transverse axis between a first position in which engagement of said second slot upon the second pin is secured by said gate, and a second position in which said gate is clear of said second slot; and
a latch lever mounted upon said coupler gate, said latch lever comprising a tab portion for engaging in a third slot defined by said third plate, said latch lever being rotatably mounted to pivot between a first position, in which said tab engages in said third slot, in a manner to resist rotation of said coupler gate, and a second position in which said tab is clear of said slot, thereby to allow rotation of said coupler gate.
11 Assignments
0 Petitions
Accused Products
Abstract
An improved quick coupler for attaching a tool to an excavator includes a body of a pair of spaced parallel plates providing structure for fixed attachment of the coupler to an end of the excavator. The plates define a first slot with an opening facing in a first direction to engage upon a first tool and a second slot with an opening facing in a second direction to engage a parallel second tool pin upon the tool. The body has a third plate between the spaced parallel plates. The coupler has a latch for securing the second pin in the second slot, the latch including a coupler gate rotatably mounted on an axis transverse to the second pin axis to pivot about the axis between a first position with the pin secured in the second slot by the gate and a second position with the gate clear of the second slot. A latch lever rotatably mounted on the coupler gate has a handle for moving the lever and a tab for engaging a third slot in the third plate. The latch lever pivots between a first position with the tab engaged in the third slot to resist rotation of the gate and a second position with the tab clear of the slot to allow rotation of the gate.
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Citations
7 Claims
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1. A quick coupler for attaching a tool to an excavator comprising:
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a coupler body comprising a pair of spaced parallel plates, said plates defining means for fixed attachment of said quick coupler at the end of the excavator, said plates defining a first slot facing in a first direction, said first slot adapted for engagement upon a first pin on the tool, and a second slot facing in a second direction, said second slot adapted for engagement upon a second pin on the tool, the first pin and the second pin being substantially parallel, and a third plate, mounted between and substantially perpendicular to said pair of spaced parallel plates; and a latch mechanisms mounted to said coupler body for securing engagement of said second slot upon the second pin, said latch mechanism comprising a coupler gate rotatably mounted on an axis transverse to a longitudinal axis of the second pin, so that the gate pivots about said transverse axis between a first position in which engagement of said second slot upon the second pin is secured by said gate, and a second position in which said gate is clear of said second slot; and
a latch lever mounted upon said coupler gate, said latch lever comprising a tab portion for engaging in a third slot defined by said third plate, said latch lever being rotatably mounted to pivot between a first position, in which said tab engages in said third slot, in a manner to resist rotation of said coupler gate, and a second position in which said tab is clear of said slot, thereby to allow rotation of said coupler gate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification