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US 7,062,943 B2Granted
Two-sided key release for handcuff
AssigneeArmament Systems and Procedures, Inc.
InventorsKevin Parsons, Lester Stener
Life of this patent
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AssigneeArmament Systems and Procedures, Inc.
InventorsKevin Parsons, Lester Stener
Estimating the term…
The handcuff assembly includes a bow pivotally connected to a cheek plate frame assembly which includes a unitized frame that is die stamped from a metal plate and which is overmolded with a polymer overmold. The bow and arcuate cheek arms engage a wrist of a person to be restrained with an envelope of the bow being defined by a conic path with an increasing arc. The bow and cheek arms have rounded inner edge surfaces. The cheek arms have reinforcing ribs. The molded polymer covering surrounding the cheek arms provide a round on the inner edge of the cheek arms which engage a wrist. The unitized frame has interlocking tabs on folded side plates of a base frame. A flat is provided on an outer surface of the bow for lining up a point of contact with a wrist. A removable lockset assembly for locking a pawl relative to ratchet teeth on the bow and including a slideable lock bar is received in the base frame. A key receiving structure on each side of the lockset assembly is provided for receiving a key and enabling the key to turned in one direction only for first unlocking a double-lock, which prevents movement of the bow in either direction and for secondly, completely unlocking the handcuff by moving the pawl away from the bow and against a spring mechanism. A deflectable detent is provided on a lockset housing for releaseably locking the lockset assembly within the base frame of the molded cheek plate assembly. A swivel cup is fixed in the base frame of the cheek plate assembly prior to polymer overmolding and a swivel with a welded chain link mounted thereon and has a swivel pin which is received in the swivel cup.
In a handcuff comprising a bow pivotally connected to and between cheek plates of a cheek plate assembly that also includes a base frame containing a lock mechanism, the improvement residing in the lock mechanism comprising a lockset disposed in said base frame, said base frame having opposite sides and a keyway disposed in each one of said opposite sides for receiving a key inserted from either one of said opposite sides of said base frame where the keyways are laterally offset, one from another, in the base frame, the lockset having a lock bar pawl with a set of teeth for engaging the bow on a first side and a pair of ledges on a second, opposing side of the lock bar pawl, each in alignment with a respective keyway that disengages the teeth from the bow when the key is rotated within either one of the keyways and activates the respective ledge.
A lock set assembly for a handcuff comprising a housing, a slideable lock bar in said housing, a pivotable lock bar pawl in said housing and having teeth thereon which are engageable with teeth on a tooth track portion of a bow of a handcuff, a spring between said lock bar and said pawl, said lock bar having on a side thereof facing said pawl, a first cavity, a first step or land, a second cavity, and a second step or land, and said lock bar pawl having on a side facing said lock bar, spaced apart, first and second legs, said legs being opposite said cavities in a single lock position of said lock bar where the bow can move in a forward ratcheting direction through said lock set assembly but not rearwardly and said legs being opposite and adjacent said steps or lands in a double lock position of said lock bar where the bow, once ratcheted into said lock set assembly, cannot move in either direction, said housing having on one side a first key opening on a first key axis and on the other side a second key opening on a second key axis parallel spaced from said first key axis, each opening being configured to receive a key, said first axis extending into a space adjacent said first leg and said second axis extending into a space adjacent said second leg, such that when a key is inserted in either opening, the key will be adjacent said first or second leg and rotation of the key in one rotational direction only will result in engagement of the key with said lock bar and movement of said lock bar to the single lock position.
A handcuff comprising a bow pivotally connected to and between cheek plates of a cheek plate assembly that also includes a base frame containing a lockset, said lockset having opposite sides, and said and being disposed in said base frame having opposite sides, and said base frame and said lockset having a keyway disposed in each one of said opposite sides thereof for receiving a key inserted from either one of said opposite sides of said base frame for operating said lockset assembly where the keyways are laterally offset, one from another, in the base frame, the lockset having a lock bar pawl with a set of teeth for engaging the bow on a first side and a pair of ledges on a second, opposing side of the lock bar pawl, each in alignment with a respective keyway that disengages the teeth from the bow when the key is rotated within either one of the keyways and activates the respective ledge.
A lockset assembly for a handcuff of the type comprising a bow pivotally connected to and between cheek plates of a cheek plate assembly that also includes a base frame having opposite sides and a lockset disposed therein, said lockset having opposite sides and a keyway disposed in each opposite side thereof for receiving a key inserted from and through either one of the opposite sides of the base frame and into said lockset for operating said lockset where the keyways are laterally offset, one from another in the base frame, the lockset having a lock bar pawl with a set of teeth for engaging the bow on a first side and a pair of ledges, on a second opposing side of the lock bar pawl each in alignment with a respective keyway that disengages the teeth from the bow when the key is rotated within either one of the keyways and engages the respective ledge.
A lockset assembly for a handcuff, said lockset assembly comprising a housing, a slideable lock bar in said housing, a pivotable lock bar pawl in said housing and having teeth thereon which are engageable with teeth on a tooth track portion of the bow of a handcuff, said lock bar having on a side thereof facing said pawl, a first cavity, a first step or land, a second cavity, and a second step or land, and said lock bar pawl having on a side facing said lock bar, spaced apart, first and second legs, said legs being opposite said cavities in a single lock position of said lock bar where the bow can move in a forward ratcheting direction through the cheek plate assembly but not rearwardly and said legs being opposite and adjacent said steps or lands in a double lock position of said lock bar where the bow, once ratcheted into the cheek plate assembly, cannot move in either direction.
Dependencies are inferred from the claim text.