Abstract: A convertible lock structure includes a main body including a lock core received therein and a latch rod extending from an end thereof. The main body includes a transverse hole defined therein for receiving an end of a spring-biased control latch. A casing receives the main body and includes an end wall through which the latch rod extends. The casing further includes at least two positioning holes one of which is selected to receive the second end of the control latch. A second end of the control latch is operable by a proper key so as to move between a retracted position inside the main body which allows the main body to move in the casing and an extended position beyond the transverse hole to retain the main body in position.

Abstract: A padlock which includes a cylindrical lock body, a shackle having at least one free end detachably inserted into a lock hole on the lock body, a lock cylinder mounted in the lock body at one end and controlled to lock the at least one free end of the shackle, wherein the lock cylinder includes a cylinder case mounted in one end of the lock body and moved axially between the locking position and the unlocking position, a locating pin mounted in a hole on the lock body to stop the cylinder case between the locking position and the unlocking position, a barrel fixedly mounted inside the cylinder case, a spindle mounted in the barrel and turned with a key between the locking position and the unlocking position, a locking device mounted in a hole on the lock body to lock the cylinder case in the locking position when the cylinder case is moved to the looking position, and spring means mounted on the cylinder case to force it from the locking position to the unlocking position when the spindle is turned to the unl

Abstract: An improved push-button locking device has an outer sleeve in which an inner sleeve is received. The inner sleeve is used to receive therein a locking rod, a front ring seat, a rear ring seat, and a plurality of front and rear retaining tenons and urging springs. The outer sleeve is provided in the wall thereof with a bar hole. A locating pin is fastened to the wall of the inner sleeve such that the locating pin extends into the bar hole for enabling the inner sleeve to move axially within the bar hole. A retrieving spring is located between the inner sleeve and the outer sleeve for enabling the inner sleeve to remain outwards in the absence of an external force. The locking rod is provided with an extra portion capable of extending outwards through the axial hole of the outer sleeve. The axial hole is provided in the wall thereof with a recess in which a compression spring and an urging pin are disposed.

Abstract: A key operated doorlock, which may incorporate a deadbolt, has a bolt housing that is mounted on the exterior of the door and is held there by being fastened to a spacer disposed within the door and a mounting plate at the interior side of the door. The main bolt is locked in place with a secondary locking apparatus which may include a barrel lock which operates a bolt which cooperates with a keeper opening in still another bolt. The latter engages a keeper opening that forms part of the housing. A lever system is provided which permits operation of the third bolt when permitted by the state of the second mentioned bolt.

Abstract: A locking assembly for a gate locking system comprises a gate movable within opposed channeled guide tracks with one track and gate having aligned apertures. The lock assembly is mounted on the track over the aligned apertures and has a locking bolt slidably mounted within its housing for axial movement between a locking position extending through the track and gate apertures, and an unlocked position removed from the gate and track apertures. The bolt has a radially projecting shoulder on its outer surface between its inner and outer ends. A spring biases the bolt towards its unlocked position. A lug is movably mounted in the housing between a first position engaging the bolt and retaining the bolt in its locking position, and a second position disengaged from the bolt for releasing the bolt for axial movement within the housing.

Abstract: A lock for furniture or similar articles with a flexible tamboured cover which traverses a track. Upon actuation of the lock, the pin is shifted within the track and prevents movement of the cover therein.

Abstract: A latch, as for a door, having a handle movable to latch and unlatch the door and a removable lock located within the handle. The lock is provided with a stop engaging finger on its end and a retractable bolt on its side. The lock receptacle in the handle has a plurality of bolt engaging surfaces therein which hold the lock in the handle in a locked position wherein the finger engages the stop to prevent movement of the handle, hold the lock in the handle in an unlocked position in which the finger does not engage the stop, and provide a means whereby the bolt may be completely retracted for lock removal.

Abstract: A tamper-resistant steering column lock incorporating an improved combination lock is disclosed. The improved combination lock includes an array of discs, each having an electrically conductive member extending therethrough. The disc at one end of the array is connected to the active terminal of the vehicle's electrical system and the disc at the other end of the array is grounded. When the discs are rotated to align the electrically conductive members, a circuit is completed to a solenoid or the like which regulates movement of a locking bolt between its locked and unlocked positions.

Abstract: The invention provides a locking mechanism to control the latch on a cabinet drawer or the like having a bolt which operates to engage or release the latch, the bolt in turn being controlled by a locking pin activated by a key operated cylinder lock. Additionally, the locking mechanism may have a second set of locking pin and cylinder lock over-riding and controlling access by the first cylinder lock.