Abstract: A high security lock includes a shackle having two ends and a lock body having openings for receiving the ends of the shackle. A latch in the lock body has a catch movable into engagement with the shackle for securing at least one end of the shackle in the body. The latch is releasable to allow the one end of the shackle to move clear of the body to open the lock. The shackle is made of a shape memory effect alloy having a characteristic that its yield strength increases when work is impressed on it, so that cutting or breaking the shackle with common tools is more difficult and time consuming than with other shackle materials. The lock thus provides a level of security substantially superior to conventional locks.

Abstract: A method high security locking includes inserting a shackle having two ends into a lock body having openings for receiving the ends of the shackle. A latch in the lock body has a catch that snaps into engagement with the shackle for securing at least one end of the shackle in the body. The latch may be released to allow the one end of the shackle to move clear of the body. to open the lock. The shackle is made of a shape memory effect alloy having a characteristic that its yield strength increases when work is impressed on it, so that cutting or breaking the shackle with common tools is more difficult and time consuming than with other shackle materials. The lock thus provides a level of security substantially superior to conventional locks.

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: A magnetic key operated lock has an anti-rap arrangement which comprises a magnet pin supported in a bar mounted in a slide member. The remote end of the pin fits into an aperture in a locking plate and is pivoted to swing downwards out of the aperture when a correctly coded key is inserted into the lock. The correctly coded key has a repelling spot to pivot the magnet as required and before the key attempts to move the slide member from its locked position. Rapping on the face of the lock cannot move the remote end of the magnet pin out of the aperture because it is restrained by its pivoting action from moving laterally out of the locking plate. Another anti-rap arrangement includes a padlock incorporating both anti-rap arrangements.

Abstract: A motorcycle infrared rays lock for a motorcycle include a housing, an infrared rays receiving unit and a movable block contained in the housing and an infrared rays emitting unit. The infrared rays emitting unit is deposited in a separated case to be inserted in a front opening of the housing for turning on the emitter to emit a preset data signal to a sensor to actuate a receiving IC for examining the signal and turning on a transistor to actuate an electro-magnetic switch to retract a movable block. The movable block has a tooth end engaging a rack in an end portion of a hook rod locking a free end of a chain wound around a portion of a motorcycle wheel so that the chain can be taken off the hook rod and then off the wheel.

Abstract: A remote controlled automobile and motorcycle lock comprising a U-shaped lock body, a U-shaped hook rod combined with the lock body to be locked therein, an electronic device mounted on a panel fixed inside the lock body, a remote electronic controller to transmit a signal to operate the electronic device to allow the U-shaped hook rod be pulled out of the lock body for unlocking this lock, and an elongated rod screwing with a female threaded post at a rear end of the lock body to hook with brake pedal so as to fix this lock on a part of a steering wheel of an automobile to lock it.

Abstract: A card-operated lock using a card with embossed letters matching with corresponding letters on letter profiles in the lock for lowering of side levers on the letter profiles and consequently disengaging the letter profiles from their retaining plates to open the lock. The lock is designed to prevent opening thereof without the designated card.

Abstract: A lock for a helmet is disclosed consisting of a lock which is mounted integrally with the liner of the helmet along an edge of the helmet, with the key access and shackle facing outwardly. The shackle is a three-position shackle, capable of being locked in one position such that the shackle extends beyond the periphery of the helmet in order that the helmet may be locked around a suitable object and is lockable in another position such that the shackle is flush with the top face of the body of the lock. An open position of the shackle allows the shackle to swing freely in order that it may engage such a suitable object and the shackle be subsequently locked into the first locked position.

Abstract: It is an improved padlock structure, in which the actuating mechanism is particularly designed to include a lock cylinder and, an actuating assembly; the actuating assembly further includes a T-shaped bolt, a front guide plate, a rear guide plate, a return spring, and a cam member with two steel balls. The major features of this lock are its single structure and having little or no trouble in use.

Abstract: This invention relates to an adjustable car lock device and, in particular, to one including a lock body with one end that connects to a barrel which has one end connected to the lock body and other end connected with a cylinder. The cylinder accommodates a lock hook which has rotatably adjustable rod whereby the length of the lock device may be adjusted to meet different distance between steering wheel and the brake/gas pedal. The lock hook has a U hook which is foldable to save storage space.

Abstract: A padlock having a "U" shaped shackle, a main body having an opening to receive at least one leg of the shackle, the main body having an interior which defines a recess within which a lock bolt body can be threadedly admitted, the lock bolt body having one catch to engage at least one leg of the shackle. A key rotates the lock bolt body between a locked, an unlocked, and a disassembled position.

Abstract: A plunger type lock has an elongate shank or housing with an enlarged head at one end and at least one lock element movable to project from the housing to engage a grooved or recessed member and lock the same to the housing and to retract into the housing to release the grooved or recessed member, a plunger movable in the housing by a special key to control the position of the lock element and an immovable security rod extending through the plunger and axially substantially to the end of the housing through which the key enters. Due to the presence of the security rod, a special key is required to operate the lock.

Abstract: A padlock having a "U" shaped shackle, a main body having an opening to receive at least one leg of the shackle, the main body having an interior which defines a recess within which a lock bolt body can be threadedly admitted, the lock bolt body having one catch to engage at least one leg of the shackle. A key rotates the lock bolt body between a locked, an unlocked, and a diassembled position.

Abstract: A padlock having a "U" shaped shackle, a main body having an opening to receive at least one leg of the shackle, the main body having an interior which defines a recess within which a lock bolt body can be threadedly admitted, the lock bolt body having one catch to engage at least one leg of the shackle. A key rotates the lock bolt body between a locked, an unlocked, and a disassembled position.

Abstract: A padlock having a "U" shaped shackle, a main body having an opening to receive at least one leg of the shackle, the main body having an interior which defines a recess within which a lock bolt body can be threadedly admitted, the lock bolt body having one catch to engage at least one leg of the shackle. A key rotates the lock bolt body between a locked, an unlocked, and a disassembled position.

Abstract: A high security barrel lock and a high security key with a movable external sleeve for maintaining the lock in an unlocked position. The lock has a cylindrical barrel with an axial bore. A hollow plunger and a center pin with an enlarged head are axially mounted in the bore. A pair of locking balls are constrained for limited movement between locked and unlocked positions in radial passageways formed in the barrel. The sleeve is fitted over the barrel and is constrained for movement between a locking ball holding position and a locking ball releasing position. In the holding position, the sleeve holds the locking balls in their unlocked position and, in the releasing position, the locking balls are released by the sleeve and free to move radially outward in the barrel passageways into their locked position. Thus, the installer does not require a key in order to install the lock.

Abstract: A barrel lock has a cylindrical barrel with an axial bore. A compression spring and a center pin are coaxially mounted in the bore. A pair of locking balls mounted for limited movement in radially extending passageways are held radially outward in a locking position by the compression spring. When a key for locking and unlocking the lock is fully inserted into the lock and the key handle is operated, the compression spring is drawn rearwardly and the locking balls are permitted to move radially inward to an unlocking position.

Abstract: A chain lock is disclosed which has an outer sleeve fitting over an inner cylindrical case having a recess for the insertion of a link of a chain. When the case is rotated within the sleeve, a locking member moves within the recess to prevent release of the chain link from the recess. A locking device fits within a bore of the case and extends through a hole in the sleeve to prevent rotation of the case within the sleeve. When the locking device is removed from the bore in the case, the case is free to rotate to allow the locking member to clear the recess and to permit the chain link to be removed. The ends of the chain and the locking mechanism are completely contained within the case of the lock preventing tampering with the locking mechanism or access to the chain. There are no internal latches or levers to jam and the chain lock generally conforms to the shape of the chain.

Abstract: A key-actuated padlock comprises a shackle, a case to receive the shackle d a flat, substantially U-shaped spring within the case. One leg of the spring serves as a bolt to restrain the movement of the shackle and the other leg serves as an ejector, urging the shackle out of engagement with the bolt leg. The bolt leg is formed to receive a key to unlock the padlock.

Abstract: A padlock device including a unitary, elongated, cylindrical metal body having spring loaded shackle elements extending into one end thereof and a key-locking cylinder assembly extending into the other end. Rounded recesses are formed along the sides of the cylindrical body and the shackle pin holes are arranged so that the pins respectively extend through the recesses. The locking cylinder includes a pawl mechanism which engages notches in the ends of the shackle pins for locking the pins in the closed position.

Abstract: A padlock construction including a body having tine-receiving holes and a shackle having tines insertable in the holes, wherein the body is provided internally with tumbler pins shiftable into and out of intersecting relation with a tine to lock the latter, the padlock body having a slot affording end access to the tumblers to shift the latter out of tine-intersecting relation to open the lock.

Abstract: A rack and locking unit for a bicycle includes a pedestal, a lock box mounted on the pedestal and at least one arm member mounted to the lock box and extending in a direction substantially perpendicular to the pedestal. The lock box has at least one locking bar structure mounted to it which is axially and pivotable displaceable relative to the lock box between a locked and unlocked position. Within the lock box there is provided a locking mechanism for each locking bar structure which is actuatable externally of the lock box, by, for example, a key. Preferably the locking bar structure receives a wheel and a portion of the frame of the bicycle to lock it to the unit. The arm member is in turn provided with a shaft which extends outwardly therefrom in the displacement direction of the locking bar structure. The arm member and shaft receive the other wheel of the bicycle and prevent its removal when the first mentioned wheel is locked in place.