Pintle hook

Details Pintle hook Pintle hook

B - Operations, Transporting

60

D

B60D 1/04 (2006.01) B60D 1/28 (2006.01)

Patent

CA 2109691

A pintle hook hitch having an outwardly upwardly curved, fixed horn, an outwardly extending pivotal latch arm movable between a lower, closed condition over the horn, and a raised open condition, the body having a jamb face for engagement by a lock, a primary lock pivotally shiftable between a lowered and locked position for abutment with the jamb face, and an unlocked position pivotally raised away from the jamb face, a vertical spring biasing the lock toward the lowered lock position, the primary lock also being laterally shiftable with a push button pivot pin between a first lateral position and a second lateral position, a lateral spring biasing the primary lock laterally toward the first lateral position, the latch arm having a slot through which the pivotal primary lock is vertically movable when in the second lateral position, and having an interference ledge engaging the pivotal primary lock and preventing it from pivoting to said unlocked position when in the first lateral position, the second pivot pin extending beyond the latch arm and terminating in a push button, and the second pin having a lock engager to laterally shift the second pivot pin and the primary lock from the first position to the second position. To pivotally open the latch arm, it is necessary to perform a three-step process of first pushing the second pivot pin laterally via the push button against the lateral spring bias to laterally shift the primary lock from the first position to the second position, then lift the primary lock through the slot against the bias of the vertical spring, and then lift the latch arm.

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