Abstract: A rekeyable lock includes a false bible which houses a retainer pin, the retainer pin engaging the lock core. The lock core has a pin tumbler located to selectively engage the retainer pin so as to cause disengagement thereof from the core. The false bible is not physically attached to the core and is configured to match the operating environment.

Abstract: A cylinder lock system employing a key having a projection extending from each opposing parallel edge of the key blade, the projections respectively operating an auxiliary pin tumbler stack and cooperating with a groove in the lock shell to retain the key in the lock after plug rotation from the key insertion position. The key retaining projection also cooperates with the driver pin of the auxiliary pin tumbler stack to prevent key trapping, i.e., the presence and size of the retaining projections keeps the auxiliary driver pin from engaging the keyway. The cooperation between the key retaining projection and the auxiliary driver pin is permitted by providing the lock with two shear lines, located on different diameters, which are simultaneously operable by a single key.

Abstract: A rekeyable lock includes a false bible which houses a retainer pin, the retainer pin engaging the lock core. The lock core has a pin tumbler located to selectively engage the retainer pin so as to cause disengagement thereof from the core. The false bible is not physically attached to the core and is configured to match the operating environment.

Abstract: An actuator for a lock is provided with a operating handle which may be easily removed through the use of a special key and may also be reinstalled without the use of the special key or tools. The actuator may be "rekeyed" as necessary to maintain security and removal of the handle will lock the actuator.

Abstract: A latch actuator mechanism (10) having a housing (18) in which is mounted a lever (40 ) that engages a carrier member (54) that surrounds a spindle (66). The spindle includes a radial projection (74) that engages a recess (60) in the carrier member (54) such that as the lever (40) is pivoted, it linearly displaces the carrier member which in turn bears upon the projection (74) to rotate the spindle (66). The spindle is connected to a latch (16) that extends transversely to the axis of the spindle and is actuated for engagement and disengagement to strike (82). The preferred latch mechanism includes an elongated latch case (88) mounted transversely on the spindle (66), the latch having a retractor member (96) mounted for linear displacement longitudinally within the case and a latch bolt head (114) adapted for a projected and a withdrawn position relative to the case.

Abstract: A machine for coding or duplicating a pattern of bits onto a key blank employs a locator block which forms reference slots for receiving a key to be duplicated. A template having a matrix of openings which correspond to possible pre-established bit locations is positioned in registration with the key receiving slots. A depth gauge is employed so that a guide selectively seated in a bit defining cut-out of the pattern key indicates the correct incremental depth of the bit to be duplicated. A cutter having a preestablished relationship to the depth gauge guide is employed to obtain the correct cutting depths for the key blank bits.

Abstract: A key-in-knob type cylinder replacement system comprises a replacement cylinder having a generally cylindrical shell and a plug having a keyway and housing pin means to prevent the rotation of the plug. A false bible dimensioned to be generally commensurate in size and shape to the projecting pin housing of the cylinder to be replaced is mounted to the cylinder shell. An adaptor means for actuating the latch assembly in response to rotation of the replacement plug is secured to the replacement cylinder plug by means of a clip. A replacement kit provides a plurality of false bibles and adaptor means, each of which is adapted to be mounted to the plug of the plug-shell combination to form a replacement for a conventional key-in-knob cylinder.

Abstract: A compact cylinder lock operated by a key having smooth edges and detents in opposed side faces. The locking mechanism includes series connected pin tumblers and side bars which are resiliently biased. A resiliently biased locking bar having locking lugs extending therefrom cooperates with the side bars and lock housing; the locking bar moving out of engagement with the housing and into gates in the side bars when the side bars are moved a sufficient distance by the pin tumblers. The side bars are provided with false gates which engage the lugs on the locking bar to prevent unauthorized opening of the lock.

Abstract: A guard for protecting the cylinder of a door lock from removal comprises a substantially rectangular plate having a first portion including a section adapted to fit over the lock cylinder and a second portion offset from the first portion, the second portion traversing the gap between the door and the doorjamb for protecting the bolt.

Abstract: A compact cylinder lock operated by a key having smooth edges and detents in opposed side faces. The locking mechanism includes series connected pin tumblers and side bars which are resiliently biased. A resiliently biased fence cooperates with the side bars and lock housing; the fence moving out of engagement with the housing and into gates in the side bars when the side bars are moved a sufficient distance by the pin tumblers.