The present invention relates to a pin tumbler cylinder lock comprising an outer cylinder, an inner cylinder rotatably arranged in a cylindrical opening in the outer cylinder, a key-way intended for a key and at least two rows of parallel bores arranged in the outer cylinder, in which bores spring loaded tumbler pins are slidably arranged. The at least two rows of bores have different number of bores, whereby the key will be prevented from retraction in one or more angular position of the inner ...

A door or window lock has a body which is securable to the door, window, or a surround for a door or window, and has at least two passages therethrough that extend angularly relative to one another. A locking bar is slidable axially in any one of the passages to adopt either an operative position or an inoperative position, and in the operative position a locking end portion of the bar protrudes a predetermined distance beyond an adjacent side of the body. The bar can adopt either of two operati...

A lock of the type preferably used with sliding doors having first and second elements constituted by solid cast material, the first element having a head disposed at one end thereof with a recess and a cavity therein. The second element is rotatably mounted at one end thereof to the first element such that the other end of the second element may be rotated into and out of the recess in the head of the first element. The second element also has a cavity therein which aligns with the cavity of th...

A lock including a lock casing (1), a locking mechanism (2) dislaceable therein and connected to a latch bolt (2a) and block means (12), which are movable transversally to the displacement direction of the locking mechanism and resiliently loaded (14) towards positions blocking the locking mechanism, wherein the blocking means can be brought to releasing positions by insertion of a card (3) serving as a key and having recesses (3a) corresponding to the blocking means. The blocking means (12) are...

The profiled cylinder (38) seated in an insertion opening (87) of the lock housing (7) is guided by a retaining bracket (93) and fixed centrally by a detent pin (121) on the retaining bracket (93). The detent pin (121) is guided displaceably on a slide piece (103) and initially stressed by a spring (131) towards the profiled cylinder (38). The profiled cylinder (38) contains a reading device for en electronic key, which device is connected through a plug-in connection (89) with an electronic cir...

A lock for preventing the removal of an object having a first portion with a smaller cross-sectional area than the cross-sectional area of a second portion or the cross-sectional area of a third portion between which the first portion is disposed comprised of a housing having an opening and a removable member. The removable member is disposed in the opening such that when the member is removed at least the second portion or the third portion of the object can fit through the opening in the housi...

The present invention relates to a locking instrument effective to be easily constructed with simple structure, wherein said locking instrument can be released or locked by depositing floating balls to a predetermined position through magnetic attraction exerted by a magnetic key, said floating balls being freely movably mounted in cylindrical spacings formed between cylindrical barrels having one end closed and pistonlike members relatively slidably engaging each other defining therewith a shal...

A lock has a drive member which is moved to actuate the lock. A plurality of elongate members are connected to the drive member, one end of each elongate member being inserted in a respective spring-biased plunger. A first contoured element locates the plungers in position. An appropriate key must be inserted with a contoured surface in contact with a second set of plungers to align passages in the second set of plungers with the ends of the elongate members to enable the elongate members to mov...

A lock comprises a latch bolt, a working member to be retracted into the lock when a door is closed, a spring for retracting the latch bolt and a spring for returning the latch bolt so repulsive energy is accumulated in the springs by the working member, and a release member for releasing the accumulated energy in the springs. By this releasing of energy, the latch bolt is moved to a retracted position to be unlocked. When the door is opened, another accumulated energy is released, the latch bol...

An improved lock for preventing operation by a gaff. The improvement consists of a means for preventing removal or up-lift of standard removably affixed pin caps on tumbler pin keyed locks. The device affixes the pin cap to the body of the lock.