Abstract: A handcuff assembly comprising a pair of handcuff bodies retained to one another by one or more linkages. Each body extends between a pivot end and a body latching end. A locking arm is pivotally assembled to the handcuff body pivot end. A series of ratcheted teeth extend along a portion of each locking arm proximate an arm latching end. A first locking pawl is integrated into each handcuff body, wherein the first locking pawl is operated by a key to engage the pawl with the ratcheted teeth, retaining the handcuff assembly in a locked configuration. A second locking mechanism is provided at the pivot assembly, wherein the second locking mechanism resists pivotal motion of the locking arm when oriented into a locked configuration by way of rotating a key. The handcuff assembly requires rotation of two separate locking mechanisms by two separate key motions to unlock each locking arm.

Abstract: A pivot lock for use in a handcuff of the type having a body containing a primary locking system and having parallel strands extending laterally therefrom terminating at a pivoting end, which supports a pivoting locking arm with a plurality of ratcheted teeth for engaging the primary lock. The pivot lock positioned at the pivoting end includes a pivot gear affixed to the locking arm at a pivoting juncture of the strands and the locking arm. The pivot gear has a plurality of teeth about its periphery. A locking pawl has at least one detent and a projection therefrom and is supported by one of the parallel strands. The locking pawl is selectively rotatable between a locked position wherein the projection is in engagement with the plurality of teeth of the pivot gear and an open position wherein the projection is disengaged from the plurality of teeth. A plunger engages the at least one detent for maintaining the locking pawl in a selected rotated position.