Abstract: A locking mechanism is provided for a lock body and a rotatable key plug. The locking mechanism comprises pins having recesses, each of the pins adapted to be disposed in pin bores in the key plug for reciprocal and rotational movement. An elongated spring member simultaneously engages and biases the pins toward a keyway in the key plug. A locking bar moves between a first position and a second position where at least a portion of the locking bar is received in the recesses in the pins. The locking bar is prevented from moving to the second position unless the pins are in a position where the recesses are aligned with the locking bar. Upon insertion of a key in the keyway the pins are moved axially or rotated for aligning the recesses in the pins with the locking bar so the key can rotate the key plug.

Abstract: A lock cylinder monitoring assembly for monitoring position of a lock cylinder. The monitoring assembly includes a housing having an inner cavity and an exterior diameter. The exterior diameter of the housing is not significantly greater than the corresponding cylinder diameter. The assembly further includes a switch received into the inner cavity of the housing. The switch is in electrical communication with an indicator. The switch is reactive to any change in position of the lock cylinder.

Abstract: A locking mechanism is provided for a lock body and a rotatable key plug. The locking mechanism comprises pins having recesses, each of the pins adapted to be disposed in pin bores in the key plug for reciprocal and rotational movement. An elongated spring member simultaneously engages and biases the pins toward a keyway in the key plug. A locking bar moves between a first position and a second position where at least a portion of the locking bar is received in the recesses in the pins. The locking bar is prevented from moving to the second position unless the pins are in a position where the recesses are aligned with the locking bar. Upon insertion of a key in the keyway the pins are moved axially or rotated for aligning the recesses in the pins with the locking bar so the key can rotate the key plug.

Abstract: A locking mechanism is provided for a lock body and a rotatable key plug. The locking mechanism comprises pins having recesses, each of the pins adapted to be disposed in pin bores in the key plug for reciprocal and rotational movement. An elongated spring member simultaneously engages and biases the pins toward a keyway in the key plug. A locking bar moves between a first position and a second position where at least a portion of the locking bar is received in the recesses in the pins. The locking bar is prevented from moving to the second position unless the pins are in a position where the recesses are aligned with the locking bar. Upon insertion of a key in the keyway the pins are moved axially or rotated for aligning the recesses in the pins with the locking bar so the key can rotate the key plug.

Abstract: A locking mechanism is provided for a lock body and a rotatable key plug. The locking mechanism comprises pins having recesses, each of the pins adapted to be disposed in pin bores in the key plug for reciprocal and rotational movement. An elongated spring member simultaneously engages and biases the pins toward a keyway in the key plug. A locking bar moves between a first position and a second position where at least a portion of the locking bar is received in the recesses in the pins. The locking bar is prevented from moving to the second position unless the pins are in a position where the recesses are aligned with the locking bar. Upon insertion of a key in the keyway the pins are moved axially or rotated for aligning the recesses in the pins with the locking bar so the key can rotate the key plug.

Abstract: A cylinder lock monitoring assembly for monitoring position of a lock cylinder. The monitoring assembly includes a housing having an inner cavity and an exterior diameter. The exterior diameter of the housing is not significantly greater than the corresponding cylinder diameter. The assembly further includes a switch received into the inner cavity of the housing. The switch is in electrical communication with an indicator. The switch is reactive to any change in position of the lock cylinder.

Abstract: A door latch operator mount comprises a coupling member and a bearing member. The coupling member includes a plurality radial flanges and an integral resilient arcuate tab member projecting angularly outwardly of the outer surface of the coupling member. The coupling member is mounted to a door for receiving the bearing member. The bearing member has an opening for rotatably receiving a shaft of the latch operator. The bearing member also includes a plurality of flanges and an arcuate channel which tapers in depth. When the bearing member is positioned against the coupling member, the distance of the bearing member flanges from the surface of the coupling member is less than the distance of the coupling member flanges form the surface. The tab member is received in the deeper portion of the arcuate channel.

Abstract: A mortise lock for a door is provided, including an automatic deadbolt mechanism for automatic projection of a deadbolt mounted in the lock housing form a retracted to an extended position upon closing of the door. The automatic deadbolt projecting mechanism for use in the mortise lock comprises a blocking element adapted to be pivotally mounted in the housing for movement relative to the housing between a first position where a blocking surface is adapted to engage the deadbolt for holding the deadbolt in the retracted position against the force of a deadbolt biasing means and a second position where the blocking surface does not engage the deadbolt. The blocking element is pivoted to the second position upon door closing by operation of internal, pivoting lock components, including a sensor adapted to be mounted in the housing for movement relative to the housing between an extended position and a retracted position.

Abstract: A mortise lock is provided including a housing for a latch bolt and a deadbolt which are mounted in the housing for movement between a retracted position where the latch bolt and deadbolt are inside the housing and an extended position where a portion of the latch bolt and deadbolt extend from the housing. A key-operated cylinder in the housing operates to move the deadbolt between the retracted and extended positions. A latch operator is also provided for retracting both the latch bolt and the deadbolt. A moveable blocking element in the housing prevents movement of the latch operator in one position of the blocking element. A locking lever operatively connects the deadbolt and the blocking element so that when the deadbolt is extended the blocking element is automatically moved to the position blocking the latch operator. The locking lever comprises an arm member integral with the locking lever.

Abstract: A reversible mortise lock comprises a latch bolt which is removable from the housing for ease of reversal. A securing member is disposed inside the lock housing for releasbly holding the latch bolt in the housing. The securing member includes a securing element having a blocking surface biased into engagement with the latch bolt for securing the latch bolt to the securing member. The securing element has a surface accessible from outside the lock housing which when pressed releases the latch bolt from the securing member. Once the latch bolt is freed, the latch bolt can be completely removed from the lock housing, reversed and reinstalled. This releasing surface is only accessible through the side walls of the lock housing. Therefore, latch bolt reversal must be performed before the lock is installed in a door. Once the lock is installed, the latch bolt cannot be reversed because the latch bolt cannot be removed from the lock.

Abstract: A reversible mortise lock comprises a latch bolt which is removable from the housing for ease of reversal. A securing member is disposed inside the lock housing for releasbly holding the latch bolt in the housing. The securing member includes a securing element having a blocking surface biased into engagement with the latch bolt for securing the latch bolt to the securing member. The securing element has a surface accessible from outside the lock housing which when pressed releases the latch bolt from the securing member. Once the latch bolt is freed, the latch bolt can be completely removed from the lock housing, reversed and reinstalled. This releasing surface is only accessible through the side walls of the lock housing. Therefore, latch bolt reversal must be performed before the lock is installed in a door. Once the lock is installed, the latch bolt cannot be reversed because the latch bolt cannot be removed from the lock.

Abstract: A cylindrical lockset (20) includes an inside subassembly (22) and an outside subassembly (24) which are assembled with a door (208). Each subassembly (22, 24) includes a liner (26, 36), a rose (28, 38) and a lever (30, 40). A chassis assembly (58) includes a pair of sleeves (66, 68), a pair of spring plates (146, 192), a pair of torsion springs (166, 194), a cap (172), a case (182) and a retractor (70) which is coupled to the latchbolt (46). Upon operation of either of the levers (30, 40) from a non-operated or home position, the latchbolt (46) is retracted and the associated one of the springs (166, 194) is tensioned so that, upon release of the levers, the springs return the levers to the home position.