Abstract: A burglarproof system for automotive vehicle which precludes a burglar from improperly starting the engine of an automotive vehicle using a duplicate key or short-circuiting a starter circuit. A magnetic card having a plurality of permanent magnets buried wherein and representing a predetermined password, and a card reader reading the poles and arrangement of the permanent magnets appearing on the upper surface of the magnetic card. One embodiment reads the password in a static reading mode. A second embodiment reads the password during movement of the magnetic card. A password comparator of the burglarproof system compares the password of the magnetic card with the predetermined password. A coincidence signal from the comparator establishes an electric circuit required for starting the engine of the automotive vehicle.

Abstract: This invention relates to a burglarproof key cylinder lock which comprises an outer tubular member, and an inner tubular member rotatably provided within the outer tubular member. A properly coded magnet key is inserted into the inner tubular member. The outer tubular member is provided with at least one switch member therein which is turned ON when a properly coded magnet key is inserted into the inner tubular member. An input signal discrimination circuit is provided for cutting off output signals to supply elements essential for the operation of an engine for a vehicle in case a key other than the properly coded key is inserted.

Abstract: This invention relates to a device for giving an alarm for failure to draw out an engine key for a vehicle. A key cylinder lock comprises an outer tubular member, and an inner tubular member rotatably provided within the outer tubular member. A magnet key having a magnet is inserted into the inner tubular member. A switch member which is turned ON when the magnet key is inserted into the inner tubular member by a power delivered from a power supply provided in the vehicle is provided in the outer tubular member. On the other hand, a door switch which is turned ON when the door of the vehicle is opened is provided. An alarm unit is connected to both the door switch and the switch member. Thus, when the door of the vehicle is opened with the magnet key being inserted into the key cylinder lock as it is, the alarm unit produces an alarm, thus to inform a driver that he forgets to draw out the key.

Abstract: A slide fastener comprising a pair of stringer tapes each carrying along their respective inner longitudinal edges a row of coupling elements. The slide fastener is produced from a continuous fastener chain having mounted thereon alternate sliders and top end stops both movable along the rows of coupling elements. Either the slider or the top end stop is provided with a latch for retaining the slider in provisionally or completely locked engagement with the top end stop.

Abstract: A dial lock assembly suitable for use on a slide fastener comprises a male part and a female part interengageable therewith, the male part having a plunger adapted to move into and out of the female part, a lock tumbler pivotably engageable with the plunger and, a rotary means operatively associated with the lock tumbler and frictionally driven by a dial carrying indicia thereon such as numerical figures, the combination of which being selected to lock and unlock the assembly.

Abstract: A dial lock assembly is disclosed for use on a pair of slide fasteners or the like, the lock assembly comprising a master lock unit and a slave lock unit releasably engageable therewith, a dial rotatably mounted in the master lock unit and carrying indicia on its upper surface, and a lock tumblar pivotally and vertically movably mounted in the master unit and engageable with the slave unit and the dial.

Abstract: A slider lock assembly is disclosed, comprising a pair of male slider and female slider releasably coupled together by a lock tumbler pivotally mounted in a casing, the male slider having an integral extension with a lock cavity engageable with the lock tumbler. The lock tumbler is both rotatable and linearly moveable and operatively associated with dial device or a key-operated latch so that the two sliders can be coupled together selectively in a provisionally locked state or in a completely locked state.

Abstract: A lock device for use on slide fasteners to open and close the same is disclosed which is essentially constructed with a slider body comprising upper and lower wings, a lock prong disposed movably on the upper wing and between a position to engage with the coupling elements of the slide fastener and a dial lock mechanism mounted fixedly or movably on the upper wing to thereby allow the lock prong to move in the locked and unlocked positions. The lock mechanism is built of specified component parts.

Abstract: The present invention relates to a magnetic tumbler cylinder lock mechanism having enhanced safety because of a key disengagement preventive device that prevents the key from disengagement from the key hole when the lock mechanism is in the fully locked or fully unlocked position.

Abstract: The invention relates to a magnetic tumbler lock comprising an inner cylinder adapted to turn in an external housing, said inner cylinder having a keyhole for receiving a key, locking means including at least one magnetic tumbler, which is adapted to rotate about a rotary axis extending substantially transversely of the longitudinal axis of the inner cylinder, and a key which is provided with a magnet for co-operating with the magnetic tumbler causing the magnetic tumbler to rotate into an unlocked position when the key is inserted into the lock.