Cylinder retention mechanism
AssigneeKeystone Consolidated Industries, Inc.
InventorRobert L. Dauenbaugh
Life of this patent
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Abstract
A lock device includes a housing and a removable cylinder normally retained in the housing by a rotatable retainer ring. The retainer ring is driven by a shifter and cylinder change key between a locked and unlocked position. The retainer ring is normally biased to the locked position so that tabs associated with the retainer ring will engage appropriate locking channels of the cylinder and retain the cylinder in fixed position in an opening of the housing.
Claims10
In a lock device of the type including a housing and a removable cylinder, said housing including a bolt slidable between a projected position and a retracted position, said housing also including an opening for receipt of part of the lock cylinder, said lock cylinder including a member for drivingly engaging the bolt when said lock cylinder is retained with said housing, the improvement of means for retaining the lock cylinder in the housing comprising, in combination:
- a retainer ring extending at least partially, circumferentially about the opening;
- means including a shifter mounted in the housing engageable with the ring for rotating said ring between a first locked position and a second unlocked position;
- one of said cylinder and said ring including at least one projecting tab;
- and
- the other of said cylinder and said ring including at least one channel for receipt of said tab whenever said cylinder is in the locked position whereby said ring and said cylinder may be rotated relative to each other to unlock said cylinder from said housing.
Dependencies are inferred from the claim text.