Spread-style coupler with supplemental lock system

Details Spread-style coupler with supplemental lock system Spread-style coupler with supplemental lock system

2007-12-10

2010-06-29

Ferguson, Michael P (Department: 3679)

Joints and connections

Manually releaseable latch type

Having operating mechanism

C403S322300, C172S272000, C037S468000, C414S723000

Reexamination Certificate

active

07744301

ABSTRACT:
A coupler includes a first hook assembly comprising a first hook adapted to receive a first associated attachment pin and a second hook assembly comprising a second hook adapted to receive a second associated attachment pin. The second hook assembly selectively pivots under force of an actuator relative to the first hook assembly by an actuator. The actuator comprises a screw jack that includes a locking sleeve to prevent unintended rotation of the screw member. The actuator can be a hydraulic cylinder and the coupler can include a locking cam that moves between a retracted position and an extended position, with a supplemental lock that selectively prevents movement of the locking cam from the extended position to the retracted position. In such case, the actuator is operatively coupled to the second hook assembly and the locking cam.

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