Abstract: A tubular lock. The lock can be directly actuated and unlocked by a key and includes an inner lock assembly mounted to an inner side of a door and an outer lock assembly mounted to an outer side of the door. The inner lock assembly includes an inner handle for turning a driving wheel of a latch assembly to retract a latch bolt. The outer lock assembly includes a lock and an actuating member operably connected between a drive member and a lock core of the lock. The driving wheel can be driven by an actuating tube of the drive member to retract the latch bolt.

Abstract: A tubular lock can be directly actuated and unlocked by a key and comprises an inner lock assembly mounted to an inner side of a door and an outer lock assembly mounted to an outer side of the door. The inner lock assembly comprises an inner handle for turning a driving wheel of a latch assembly to thereby retract a latch bolt. The outer lock assembly comprises a lock and an actuating member operably connected between a drive member and a lock core of the lock. The driving wheel can be driven by an actuating tube of the drive member to thereby retract the latch bolt.

Abstract: A lock assembly includes a main body having a compartment defined in a lower part thereof for removably receiving a lock core therein. The main body further includes a number of upper chambers defined in an upper part thereof, each upper chamber including an upper pin tumbler received therein. The lock core includes a number of lower chambers defined therein, each lower chamber including a lower pin tumbler received therein. The main body further includes a number of longitudinally spaced holes defined in a periphery thereof each hole being communicated with a lower end of an associated upper chamber. A member has a number of branches, wherein each branch is removably inserted into an associated hole to support the associated upper pin tumbler during removal of the lock core.

Abstract: An auxiliary lock assembly includes a casing securely attached to the inner side of the door plate and including a first hole, a mount plate securely attached to the casing and including a second hole in alignment with the first hole, and a latch plate mounted on the mount plate and movable in a direction toward and away from the second hole. The latch plate has a first end extending beyond the casing and a second end inside the casing. An engaging wheel is rotatably received in the second hole of the mount plate and releasably engages with the second end of the latch plate. An actuating wheel is rotatably received in the first hole of the casing and is rotatable to a position to engage with the engaging wheel to rotate therewith. A switch button is mounted outside the casing and securely attached to the actuating wheel to rotate therewith.

Abstract: A lock assembly includes an inner handle assembly having a first control plate and an inner handle, an outer handle assembly having a latching plate, and a latch assembly. The lock assembly is shifted from an unlatched status to a latched status upon operation of the first control plate, and rotation of either of the inner handle and the latching plate may unlatch the lock assembly.

Abstract: A tubular lock assembly includes an inner handle, an outer handle, and a control mechanism. An outer protective cover is mounted to the outer side of the door plate and includes a pair of notches defined therein. The control mechanism includes a tubular shaft, a latch plate including a pair of protrusions formed on a mediate portion thereof, and a stop plate including two teeth. The tubular shaft includes a first end securely attached to the inner handle to rotate therewith and a second end. Two blocks are formed on the second end of the tubular shaft and have an operative recess defined therebetween. The teeth of the stop plate are received in the notches of the outer protective cover when the tubular lock assembly is in a locked position, and rotation of the inner handle in either direction causes the protrusions to be received in the operative recess of the tubular shaft such that the teeth of the stop plate disengage from the notches of the outer protective cover for unlatching.

Abstract: An adjustable dead bolt assembly includes a lock case mounted to a face plate, a pair of plates fixed to the lock case, and an actuating wheel. Each plate includes an oblong hole defined therein, wherein at least one of the plates includes a recessed section formed in an inner side thereof, the recessed section having a sidewall extending along at least one of two lateral sides of the oblong hole. At least one of the plates includes at least one protruded section formed in the sidewall of the recessed section, the protruded section being located midway along a lateral side defining the part of the oblong hole. The actuating wheel is slidably mounted between the plates and includes a spring mounted therearound in a compressed manner such that the spring may be expanded into the recessed section around the associated oblong hole to provide a positioning effect for the actuating wheel.

Abstract: A locking device for an auxiliary lock comprising a safety button able to be pressed in and a rotating ring to be rotated to actuate the dead lock to be extended for locking the lock.

Abstract: A locking device for an auxiliary lock comprising a rotatable ring, able to be rotated at the outside of a lock to turn an actuating wheel 90.degree., said actuating wheel having an 8-shaped opening for an actuating plate of the dead bolt to pass through so that the actuating plate can be turned 90.degree. to extend the dead bolt latch out to lock a door.

Abstract: A locking device for an auxiliary lock comprising a rotatable ring provided with inner teeth around the inner peripheral surface and a traditional lock additionally provided with a lateral hole to fit a spring and a steel ball pushed by the spring therein, the ball extending a little out of the lateral hole to engage with the inner teeth in the rotatable ring, the inner teeth being able to be felt surely to slide over the ball when the rotatable ring is rotated.

Abstract: A structure for controlling the dead bolt used in an electronic lock comprising a turning button at the inside of a door for locking or unlocking the lock and a structure at the outside of a door to unlock either with a coded number card or a key.

Abstract: A tubular door lock (1) has an actuating plate member (4) of metal formed by pressing and provided with a square shaft hole (42) and four square projections (43) around the square shaft hole to fit in a round opening (22, 32) of either of two assembling plates (2, 3) between which the actuating plate (4) is disposed when assembled. The actuating plate is rotated by rotation of the square shaft so that cams (44) thereon engage teeth (13) on bolt plate (11) to retract the bolt (12).

Abstract: A structure for controlling the dead bolt in an electronic lock, wherein rotation of a turning button set on the inside knob can make a clutch engage with or separated from a turning disc so that rotation of the outside knob either can pull in the dead bolt or can only move idly.

Abstract: A locking device for an auxiliary lock comprising a rotatable ring and a base. The ring is fitted around the auxiliary lock and combined with the base. Then they are mounted in the door to let a large part of the rotatable ring be exposed outside the door, and rotating the ring can cause the dead bolt of the auxiliary lock to extend out locking the lock.

Abstract: A united opening device for a double lock comprising a cam disc respectively on the shafts of a main lock and an auxiliary lock, and an intermediate plate which interacts with the two cam discs, able to unlock the auxiliary lock at the same time when the main lock is rotated to unlock after both locks have been locked.

Abstract: A tubular door lock making use of two pairs of motive teeth in a pulling plate for a two-tooth gear to selectively mesh with for an motive action. The gear is confined within a hole cut in a moving shell, which can move outside along the assembling plates and be fixed to keep a hole in it to exactly face against a hole in the assembling plates so as to enable the foot post of the door lock to penetrate through the both holes, whether this lock is adjusted in the short or in the long size.