Abstract: An electromagnetically controllable safety lock includes a locking bar which moves a slider, which is provided with teeth and which carries a blocking plate equipped with a passage pin channel. The blocking plate is coupled via a spring to a control plate, which has an angularly offset passage pin channel. The control plate supports an armature, which can be held by an electromagnet, fixed to the housing when the locking bar is subjected to a control movement. Both channels are aligned with the lock axis during an opening action so that the passage pin has a free path.

Abstract: An electromagnetically actuated lock is disclosed, which includes a lock bolt with a turnpin. An electromagnet is used as a retaining magnet, the electromagnet including a controlling and locking mechanism for locking or releasing the lock bolt. A control slide moves a control cam, a locking slide has a turnway, and a cross slide is coupled to the electromagnet with the locking slide. In a particularly preferred embodiment, a handling mechanism is used for actuating the lock bolt and for driving the control slide moving the control cam, the cross slide coupled to the electromagnet and the locking slide, so that the turnpin of the lock bolt immerses in the turnway of the locking slide. In an alternative, preferred embodiment, a tumbler lock mechanism is used, instead of the handling mechanism, and includes a double-bit key, so that both a key and a coded command are required for opening the lock.

Abstract: A resettable double-bit lock is disclosed, with a bolt having a resetting blade and a plurality of studded disks supported therein. The studded disks are adjacent a plurality of tumblers, the tumblers being supported pivotally around a mandrel and arranged by a double-bit key. A resetting swivel is supported on the bottom surface of the housing for the lock, with the resetting swivel being actuated by a bit of a resetting key and displacing thereby a resetting lock device. The resetting lock device includes a nose which releases a locking angle, the latter of which folding over into an opening position under a biassing force, which is preferably created by a spring. The locking angle further includes an arm so that when the bolt of the lock is pulled backwards, the resetting blade runs against the arm of the locking angle and releases the plurality of studded disks contained within the resetting blade.

Abstract: A combination lock is disclosed having four dial buttons arranged in a lock box in a rectangular fashion with a handle driving a bolt which is controlled by the dial buttons. The bottom of the lock box has four bearing sleeves supporting four base plates provided with "n" number of teeth. Each base plate has, on its jacket surface, a radial groove. A cross-shaped scan lock is swivel-mounted between the base plates, with the scan lock having four scan pins, or burls, fitting into the radial grooves of each of the base plates, and a lock block immersing in the bolt. Catch disks are provided with "n" number of teeth and square-shaped holes, which are supported on the base plates. The dial buttons are provided with square shafts and have "n" numbers or symbols immersed in the catch disks. Each base plate also has a concentric bore and each bore has a coupling pin provided with conical ends. The pins engage conical bores of a switch plate and one of "n" bores of the catch disks.

Abstract: An electrically controlled bolt lock with a control plate which is positively connected to a bolt element there also being a tumbler or the lock is improved by a first pin extending from the control plate for engagement with the tumbler; a second pin is also mounted on the control plate; a spring biased armature lever is pivotably mounted to the tumbler and is operated by the second pin engaging an armature is pivoted on the armature lever cooperating with a stationary electromagnet and the second pin pivoting said armature lever whenever said electromagnet holds the armature on energization of the electromagnet to thereby place said tumbler into a release position.

Abstract: An adjustable lock has an adjustment slide arranged in the bottom of a key housing, the slide is situated underneath the bolt element and a number of tumbler devices with teeth engage a blade carried by that slide, the improvement of that lock includes a recess and an oblong slot in the bolt element, a first stationay pin mounted to the housing and traversing the oblong slot; a bolt drive lever has its lower end mounted on the pin and is otherwise situated in the recess for translating key motion into a larger latch motion for the bolt, the bolt drive lever having a projection; in addition to a bearing bore, a central part of the bolt driver lever is provided with a key control curve, and the projection on the drive lever engages a U-shaped indent of the bolt, so that the bolt is moved on turning of the drive lever; hence the tumblers are encoded when a key is inserted and turned oppositely following the taking out of the tumblers of said blade, and the key, possibly a new and different key, then re-encodes t

Abstract: A door opener includes a pivotably mounted locking plate, and an electromagnet, a tangentially effective wedge element is mounted to the locking plate, an axially adjustable and movable drive slide of the shaped cross section is operatively connected to the wedge; a control slide is resiliently mounted in the drive slide; a blocking pin is mounted on the control slide; and an armature is pivotably mounted on the control slide to hold or release ultimately the locking plate.

Abstract: The latch bolt of a lock is prevented from fully retracting when an electromagnet is unenergized so that a blocking lever carrying the armature can pivot about a pivot point displaced from the armature and a slide or lever pivotally linked to the blocking lever places a blocking nose; when the electromagnet is energized the blocking lever pivots on the armature and thereby moves the slide or lever out of the track of that pin. The armature is normally held against the electromagnet by a spring so that very little electric power is needed and only in case of a desired lock release.

Abstract: An adjustable and encodible lock for room doors, safe deposit boxes or the like, under utilization of two separate lock structures includes two separate sets of tumblers possibly arranged vertically one above each other; a main slide coupled to an existing lock cylinder or to the common lock or latch or both, the main slide has two follower pins (13b and 13c); the upper tumbler system may be aligned with a cylinder axis of an existing lock; the lower tumbler system is then axially aligned with a latch handle and a lock disk for locking and unlocking the main slide; two control slides (21, 22) are respectively associated with the separate two lock and tumbler sets and are respectively provided with cutouts (21c, 22c) for engagements with the two follower pins; a first one of the tumbler set is provided for being operated by a customer key, the other one of the sets is provided for operation by a management key; each tumbler of the first set has funnel shaped control cutouts; and an intermediate slide is provid

Abstract: The combination lock includes several encoding buttons, a latch plate is slidably movable between two terminal positions and has a plurality of locking pins; a plurality of lock disks each have on one side a radial groove for respectively engaging the locking pins or being disengaged therefrom, each disk further having on its outer side a diametrical groove in which respective slide locks are permitted to slide, an encoding release slide moves said slide locks; a plurality of gears are respectively connected to the encoding buttons and positioned for engagement with the slide locks, the gears are prevented from turning, thereby preventing the encoding buttons from being turned when the respective slide lock engages the gear and the locking pins are situated in the respective radial grooves, the gears are coupled to the lock disks when the locking pins are out of the respective radial grooves, the release slide when moving the slide locks decouples the lock disks from the gears and the encoding button; and res