Abstract: A latch structure according to an embodiment includes a body, a locking body, a latch head, a plunger, and a latch stopper. The body is disposed inside a door. The locking body moves in response to an external operation. The latch head protrudes from the body to maintain the door in a closed position, and rotates when the locking body is spaced apart at least a predetermined distance. The plunger retracts into the body to prevent the latch head from rotating while the door is being closed. The latch stopper prevents the protruding latch head from retracting into the body when the plunger is maintained within the body.

Abstract: A lock unit of an electric locking device comprises a lock housing, a keeper, an inhibitor and a latch bolt. A second end of the latch bolt is positioned outwardly and cooperates with the inhibitor when in a locked orientation. The keeper includes a keeper shaft having a shaft axis of rotation, wherein said keeper is rotatable about said keeper shaft between first and second rotational positions, wherein the keeper is movable between first and second directional positions relative to the lock housing, wherein the movement between the first and second directional positions is generally linear, wherein when the keeper is held in the first rotational position and the first directional position by the inhibitor, the door is secured to the door frame, and wherein when the keeper is in the second rotational position and the second directional position, the door is allowed to move away from said door frame.

Abstract: Auto latching mortise lock for sliding door is a mortise lock for a sliding door. Auto latching mortise lock for sliding door is a system with interchangeable components to yield multiple types of door locks including sliding door locks that meet the ANSI and BHMA standards for a passage, office, communicating/patio, storeroom, privacy, entry, and classroom lock for a sliding door. Auto latching mortise lock for sliding door mounts within a mortise pocket of a sliding door. Auto latching mortise lock for sliding door can automatically latch when the sliding door in closed and automatically unlatch when the sliding door is opened. Auto latching mortise lock for sliding door can also automatically lock when the sliding door in closed and automatically unlock when the sliding door is opened.

Abstract: Fenestration lock assemblies, fenestration units including the lock assemblies, and methods of operating the lock assemblies. The lock assemblies offer a lock assembly construction that is capable of being assembled, installed, and used in a purely manual mode (i.e., in the absence of any driving unit such as, e.g., a motor, solenoid, etc.) or that may be assembled, installed, and used with a driving unit such that the lock assembly can be operated manually or in a driven mode, with the manual and driven modes of operation being unaffected by each other.

Abstract: A simple locking device includes a locking bracket, a locking tongue piece, a tension spring, a tension side wall, a base, at least two guide shafts, connection components and, wherein the locking bracket includes a lock piece, at least two guide holes and a retaining piece; the tension side wall is fixed to the base; and the at least two guide shafts respectively pass through the at least two guide holes to mount the locking bracket onto the base, such that the locking bracket is guided by the guide holes to move.

Abstract: The invention relates to a door lock provided with an oblique bolt. The objective is to decrease the external force directed into to deadlocking organs. The oblique bolt consists of slanted surfaces on both sides such that the tip part is narrower at its tip than in the back part of the tip part. The tip part has recesses in its lower part and upper part, which extend from the tip to the back part. Both recesses have a turning piece. Additionally, the oblique bolt has a support piece and flexing organs. The turning pieces guide external force up to a given turning angle via the support piece and flexing organs into the deadlocking organs.

Abstract: An appliance door latch provides a rotating hook supported on a linear carriage that may move along a line toward and away from a strike. A release of the strike from the rotating hook requires a compression of springs biasing the linear carriage which are then retained in a compressed state by a catch surface on the rotating hook. Re-engagement of the strike with the rotating hook releases the catch surface, causing the springs to pull the rotating hook and strike inward to aid in compressing a door gasket or the like.

Abstract: A door fastening device comprising a bolt movable between a retracted position and an extended position where at least part of the bolt extends, in use, to fasten the door, the bolt being linked to an abutment member, the part of the bolt being movable to its extended position in engagement, in use, of a bolt member of a lock or latch of the door with the abutment member, the abutment member being a cam which is adjustable to compensate for different clearances, in use, between the device and the door in its closed position, to ensure sufficient engagement of the abutment member by the bolt member to move the part of the bolt to its extended position, and the cam having a flat, first surface and a second surface on a nose part.

Abstract: An electromechanical interlock for a swinging elevator door is disclosed. The interlock comprises a pivotal hook member that may be attached to a swinging elevator door. The hook has a beak end and may pivot between a locked and an unlocked position. Disposed on the beak end is an electrical conductor. When the interlock is in the locked position, the beak end engages a lug and the conductor contacts electrical contacts to complete an electrical circuit. A solenoid pivots the hook from a locked position to an unlocked position. The electromechanical interlock may be adapted for use with sliding elevator doors as well as swinging doors.

Abstract: A lockset mechanism having a latchbolt assembly adapted for manual and remote operation is provided. The latchbolt assembly includes a latchbolt tail and a latchbolt head pivotally mounted for relative movement on the latchbolt tail. A slide mounted on the latchbolt tail is moveable for selectively engaging the latchbolt head to permit pivoting of the latchbolt head relative to the latchbolt tail. A spring biases the slide towards the position which engages the slide. A solenoid is operably coupled to the slide for actuation thereof.

Abstract: This invention is directed to a door latch having an auxiliary bolt which activates the latch bolt, and the use of a latch to confine small children in the home. The auxiliary bolt has a hinged beveled end which pivots when the door is opened but is fixed when the door is closed to activate the latch. The latch is placed five feet above the floor to prevent a small child from opening the door. The latch has a guard plate below the door handle to prevent a small child from opening the latch with a stick. The latch can be mounted on any side of any door.

Abstract: This exit device has a press bar and an elongated deadbolt adapted to be mounted horizontally adjacent the free end of the door and a pivoted retractor blade inward of the door. The blade is pivoted by the press bar and engages with its nose a projecting surface on the deadbolt and retracts the deadbolt. The blade also has a keeper contact surface which, as the door closes, is contacted by the keeper and the blade is pivoted inward to retract the deadbolt. The retractor blade also serves as an anti-friction bearing having a peripheral portion which rolls against the deadbolt and counters against the inward force on the deadbolt opposing to the opening force on the door.

Abstract: A lock mechanism comprising a casing; a bolt housing and two latch bolts carried by the housing to be individually rotatable about vertical axes in response to engagement with a strikeplate; the bolt housing and latch bolts movable as a unit horizontally forwardly and rearwardly within and relatively to the casing; one latch bolt having a shoulder engageable with one surface on the casing in response to the rotation of the one latch bolt in a clockwise direction to displace the housing and the two latch bolts as a unit horizontally rearwardly by a first increment relative to the casing, whereby the two latch bolts are then positioned to be further engaged in camming relation by the strikeplate, traveling relatively in a first direction to displace both latch bolts and the housing horizontally rearwardly by a second increment relative to the casing.

Abstract: A luggage latch secures a lid to a box. A hasp is mounted on the lid. A bolt and slide are mounted on the box with the bolt being resiliently mounted on the slide. When the lid is closed on the box, the bolt will resiliently snap into position to hold the lid on the box. The latch mechanism is recessed into the luggage so that its external surface is flush with the surface of the luggage.

Abstract: A direction changeable lock has a latch case, a latch bolt, and a positioning rod which can easily be turned around manually through 180 degrees, so that it does not have a direction limitation when it is to be fixed on a door. The latch bolt has a recess for an anti-burglary bolt therein.

Abstract: The invention relates to a door lock, which comprises, a lock body (1) provided with a forend and including a latch bolt (3), which is removable between a retracted position and a protruding, locking position out from the lock body through an opening (2a) in the forend (2) and which is spring-loaded towards its said protruding position, and dead locking means turnable from a passive position into a dead locking position, in which they prevent removal of the latch bolt (3) from its said protruding position into its retracted position in the lock body (1). According to the invention the latch bolt (3) comprises a body of the latch bolt (3a) and a separate latch bolt member (3b).

Abstract: The latching bolt of a window lock is pivotally mounted on a slide to pivot between locked and unlocked positions. A reversible motor with a rotary drive shaft is adapted to reciprocate the slide outwardly and inwardly by means of a scotch yoke connection between the drive shaft and the slide, the scotch yoke being of the lost-motion type so as to permit the slide to shift independently of the drive. When the slide is shifted outwardly, the bolt is permitted to pivot to its unlocked position and, when the slide is shifted inwardly, the bolt is cammed to its locked position. A lever may be operated manually to unlock the bolt in the event there is a loss of power to the motor.

Abstract: An automatic tubular deadbolt lock assembly having the automatic actuator mechanism enclosed within the tubular housing of the lock. The assembly is dimensioned like a standard tubular deadbolt, to fit within standard borings of present doors. A special quadrant trigger is mounted in and protrudes from the nose of the deadbolt, being pivotal into the deadbolt itself to an inactive recessed position upon opening of the door. With closure of the door, the trigger is cammed and depresses a camming plunger to release a transverse locking pin from engagement with the tubular lock housing, to thereby allow biased extension of the deadbolt from its retracted condition. The trigger can be rotationally reversed to accommodate left hand or right hand door arrangements.

Abstract: A lock mechanism includes a lock case and a sliding bolt which is operated by a pair of link members which are mounted within the lock case. The sliding bolt has a hollow portion and carries a pair of pivotally mounted dead latches. When the sliding bolt is fully extended from the lock case, the dead latches swing out to engage a door jamb. When the sliding bolt is retracted into the lock case, the dead latches pivot into the hollow portion of the sliding bolt.

Abstract: A closing device for doors and the like comprising a spring-projected slider automatically held in a retracted position in a housing by pushing the slider therein, and automatically released therefrom by a further pushing in of the slider. The slider supports a catch which may engage a counterpart catch member by pivoting thereagainst as the slider is retracted; and may be released as the slider is projected.

Abstract: A bolt assembly for use with interior door latches or locks embodying a movable latch bolt and a relatively movable strike engaging latching element normally activated with the bolt to engage and disengage a jamb mounted strike in response to actuation of manual operator means having associated locking means operable to prevent operator actuation of the bolt and latching element for purposes of locking the door. In such locked state, emergency opening of the door may be accomplished with the assembly of this invention by imposing appropriate force on the latching element to effect strike disengaging movement thereof relative to the bolt.

Abstract: A pivoting latch and lock for a door hinged in a frame having a strike aperture has a detent latch that can be moved out of the strike opening merely by pulling the door open unless the detent latch is specially blocked against such movement. In one embodiment a frame is installed on the door and presents an edge opening. Normally spring-projected partly through the edge opening is a detent latch having a central body carrying one or more pivot lugs guiding rotation of the detent latch about one or more axes located within the frame and alongside the detent latch. The detent latch has a surface associated with each axis so shaped as to clear the frame opening when the latch is rotated about that axis. A lever is pivoted on the frame to move into and out of a position blocking rotation of the detent latch. The lever may be operated by a solenoid or electromagnet. If desired, the same electrical device can move the two levers of duplicate pivoting latches.