Rotational range modifier for locking systems

摘要

A locking apparatus includes a fixed housing with a longitudinal elongated bore between two open ends. One end defines an arcuate track with a new rotational displacement range. A pivoting riser extends from a driver to an elongated retainer moving across a locking core configured with a predefined rotational range. A follower on the driver travels within the track. The core and the driver may be connected and inserted via the same open end for rotation within the bore. When the locking core is unlocked and rotated with an operating key, the riser displaces the retainer to retain the core within the housing, while the follower continues to rotate within the track so that the rotational range of the core is changed to the new rotational displacement range. The apparatus may include the core. The apparatus may exclude the core to allow separate installation for combined rotation with the driver.

主权项

1. A locking apparatus for use with a cylindrical locking core, the locking core defining a keyway along a longitudinal axis and being configured for rotation about the longitudinal axis within a predefined arcuate displacement, the locking apparatus comprising:
a housing to be secured against movement within a storage structure, the housing defining an elongated bore extending along the longitudinal axis between a proximate open end and a distal open end; the distal open end of the bore comprising an arcuate track defining a rotationally modified arcuate displacement about the longitudinal axis different from the predefined arcuate displacement; a riser for radial movement perpendicular to the longitudinal axis, between a first position and a second position; a driver configured for releasable engagement with the locking core, the driver and the locking core being configured for insertion into one open end of the elongated bore, for combined synchronous rotation of the driver and the locking core within the elongated bore, the driver defining a follower for travel within the arcuate track; the riser being in the first position when the locking core is operable with a change key; and the riser being in the second position when the locking core is operable with an operating key, the riser operatively engaging the locking core to allow the driver to rotate about the horizontal axis within the rotationally modified arcuate displacement.