Abstract: This invention is directed to a door lock including a housing with a lock body which cannot be easily rotated when a burglar attempts to forcedly further rotate the outside lever handle in excess of a limit for withdrawl movement of a latching slide body. A pluality of ingagement portions which react counter to a rotary motion are formed in the housing of the lock body, and a plurality of fixed engagement rods engage with the engagement portions are assembled relative to an inside fixed plate extended into an inner side wall surface of the door.

Abstract: A door lock which does not decrease the strength of an outer end portion of the outside rotary shaft includes an inside lever handle and an outside lever handle which are attached to a lock body assembled into the door, and a retracting operation of a latch bolt of a latch arranged on latch shaft perpendicular to a handle shaft is carried out by rotation of an inside or an outside rotary shaft of the lock body. A cut portion for drive opposite to a slot of an enlarged portion is formed at an inner circumferential wall of a tubular fitting portion of the outside lever handle, and that left and right cover portions in a projection form of an outer tube of the cylinder lock are respectively fitted over the cut portion for drive and the slot through left and right cut portions of the outside rotary shaft.

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: An identification code input board for activating electrical equipment such as an electrical lock includes: a display panel crosswise arranged in the form of M lines X N rows while including a plurality of display sections to display a group of codes of which number is represented by a numeral of m X n, a transparent key switch sheet superimposed on the front surface of the display panel while including a plurality of switches arranged corresponding to the display sections, a display converter for selecting one of plural kinds of display formats, of which number is represented by a numeral of (M-m+1) X (N-n+1), every time the electrical equipment is actuated, and a code reader adapted to output a digitized code signal for distinguishing a selected code, wherein each of m and n is a positive integral number of two or more and each of M X N is a positive integral number larger than that of m and n respectively.

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 card operated lock includes a lock box in which an inner card slit opened to the interior of a room and a outer card slit opened to the exterior of the room are disposed in substantially coplanar relationship with each other. A lock card having a predetermined pattern of punched engaging holes is inserted previously into the inner card slit while a key card comprising the same pattern of punched engaging holes as the lock card is inserted into the outer card slit when the lock is unlocked or opened. A plurality of rocking tumblers each of which is substantially in the form of a T-shaped plate are inserted into the lock box in the form of an array extended in the widthwise direction of the key card and perpendicular to the card slits. A horizontal bar portion of each T-shaped rocking tumbler is extended along both the inner and outer card slits.

Abstract: A door hinge of the type comprising a first metal plate having one vertical side edge formed integral with a pin and a second metal piece having one vertical side edge formed integral with a second knuckle cylinder into which is fitted the pin. A load plug is slideably fitted into the second knuckle cylinder for engagement with the upper end of the pin and the second knuckle cylinder is formed with an engaging portion for preventing the load plug from being displaced from a predetermined position. A compression spring means is loaded in the second knuckle cylinder above the load plug so as to press the load plug against the engaging portion, whereby a load applied axially to the pin is carried by the compression spring means through the load plug.

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.