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