Abstract: A double lock, dual action gravity latch device to secure a gate in a closed position comprising a latch assembly including a pivotal latch member movable between a latched and unlatched position, a keeper assembly including a striker pin to maintain the gate in the closed position when the pivotal latch member in the latched position, a latch lock assembly including a lock assembly with a first lock and a second lock each independently movable between a locked position and an unlocked position disposed on opposite sides of the gate to selectively move a lock subassembly from a locked position to an unlocked position when either the first lock or second lock is moved from the locked position to the unlocked position, and move the lock subassembly from the unlocked position to the locked position when the unlocked lock is moved from the unlocked position to the locked position and a first latch actuator and a second latch actuator each movable between a first position and a second position disposed on opposite

Abstract: A latch has a displaceable latching element in a housing for engagement with a separate striker arm to be latched behind an engagement shoulder of the latching element. The housing mounts a cylinder lock to receive a key from the front. A rotor is mounted on the rear of cylinder lock and rotation of the key causes rotation of the rotor to drive a locking element to engage and lock the latching element. The rotor may also be axial displaceable against spring biasing responsive to a rear unit pushing element whereby unlocking from a rear cylinder lock may rotate the rotor to unlock and pushing causes the latching element to be displaced against its biasing to release the striker arm.

Abstract: A lock includes a bolt having latching and unlatching positions, and a locking component having a locking position in which the bolt is prevented from moving from the latching position to the unlatching position, and an unlocking position in which the locking component does not prevent the bolt from moving. A lock cylinder includes a cam having unlocking and deadlocking positions. A deadlocking component has a disengaging position in which the deadlocking component does not prevent the locking component from moving from its locking position to its unlocking position; and when the locking component is in its locking position, an engaging position in which the deadlocking component prevents the locking component from moving. When the cam is in its unlocking position, the locking component is in its unlocking position and a deadlocking component is in its disengaging position, and conversely when the cylinder cam is in its deadlocking position.

Abstract: A latch has a displaceable latching element in a housing for engagement with a separate striker arm to be latched behind an engagement shoulder of the latching element. The housing mounts a cylinder lock to receive a key from the front. A rotor is mounted on the rear of the cylinder lock and rotation of the key causes rotation of the rotor to drive a locking element to engage and lock the latching element. The rotor may also be axial displaceable against spring biasing responsive to a rear unit pushing element whereby unlocking from a rear cylinder lock may rotate the rotor to unlock and pushing causes the latching element to be displaced against its biasing to release the striker arm.

Abstract: A housing includes a first panel having a keeper, a hinged door shiftable between a first position generally perpendicular to the first panel and a second position, and a lock mounted on the door, the lock comprising a rotatable cylinder having an axis of rotation perpendicular to the door and a cam. The cam has a first end connected to the cylinder for rotation with the cylinder and a second end spaced from the first end by a cam body, the second end extending at an angle to the cam body and lying in a second plane parallel to the axis of rotation. When the door is in the first position, the cam is shiftable from a first orientation with the cam second end spaced from the keeper to a second orientation with the cam second end overlying a side of the keeper opposite the cylinder to lock the door.

Abstract: A lock for a sliding door or window including a latching linkage and an inner manual lever, that allows movement of the latching linkage between a locked and an unlocked position by means of the manual lever and by operation of a inside or outside key barrel, but also allows deadlocking of the latching linkage in its locked position so that operation of the manual lever to unlock the latching linkage is prevented. It is however, desirable that the lock be operable to lock the lock from the inside by a convenient operation of the manual lever when the user is inside the house. It is further desirable that the door is able to be deadlocked by a key from the inside or the outside in a manner that prevents unlocking of the door by the manual handle, since a house owner may find it inconvenient to have to walk around the outside of their house locking the doors.

Abstract: An apparatus and method for enhancing the security of a cluster box unit which includes a protective enclosure, internal cabinetry, door, hinge and locking system. The cluster box unit may also include outgoing mail compartment doors that are heavily constructed and rigidly reinforced, with the locks carried thereon protectively shielded, and with the extensible bolts of these locks being engaged by brackets that not only lock the outgoing mail compartment doors but also the master loading doors of the cluster box units. The cluster box unit may also include master loading doors are provided with hinges that extend the full height of the doors—hinges that are defined by pivotally interfitting elements of extrusions that very sturdily mount the master loading doors, that prevent prying or bending the doors in the vicinities of their hinges.

Abstract: A gate latch is adapted to be installed on a gate post and a complementary striker arm is secured typically to a gate so that, upon closure of the gate, the striker arm engages a displacable latching element mounted in a housing of the latch to displace the latching element. The latching element is biased towards its open position but when the striker arm engages with the latching element it is displaced, thereby releasing an interference portion of a biased locking element, whereby the locking element is released to move under its biasing into a locking position so that self-locking is provided for the latch. A rotary release mechanism may be actuated to return the locking element so that the latching element can be released to release the striker bar and the gate may be opened.

Abstract: An apparatus and method for enhancing the security of a cluster box unit which includes a protective enclosure, internal cabinetry, door, hinge and locking system. The cluster box unit may also include outgoing mail compartment doors that are heavily constructed and rigidly reinforced, with the locks carried thereon protectively shielded, and with the extensible bolts of these locks being engaged by brackets that not only lock the outgoing mail compartment doors but also the master loading doors of the cluster box units. The cluster box unit may also include master loading doors are provided with hinges that extend the full height of the doors—hinges that are defined by pivotally interfitting elements of extrusions that very sturdily mount the master loading doors, that prevent prying or bending the doors in the vicinities of their hinges.

Abstract: A latch is disclosed that can be applied to doors in a variety of orientations and/or with keepers in a variety of orientations without any modifications to the latch being necessary. The latch includes a first module that carries a handle and an actuating member, and the latch includes a second module that includes a latching mechanism. The first and second modules can be secured together with the first and second modules being relatively oriented in any one of a plurality of orientations, while the latch remains operational with the two modules secured together in any of the various orientations.

Abstract: A hook latch for fastening and unfastening a closure member to a keeper in a latched position. The hook latch is moveable between the latched position and an open position. The hook latch comprises a rotation means which preferably comprises a knob connected to a cam shaped protuberance which acts upon an actuator plate and a locking plate. Upon rotation of either the knob or the key which is inserted in a lock cylinder which has a locking ring having a cam-shaped protuberance, the cam-shaped protuberances displace both the actuator plate and the locking plate.

Abstract: A lock 10 to be mounted in a sliding door or window. The lock 10 includes a lever 17 that is used to retract and extend the locked tongue member 15. On the inside of the door there is provided a first cylinder lock 24 that is operable to release the tongue member 15 for movement from the extended position to the retracted position thereof while provided on the outside of the door is a lock cylinder 27 that is operable to lock or to release the tongue member 15 for movement from the extended position to the retracted position and operable to move the tongue member 15 between the extended and retracted positions thereof.

Abstract: The present invention relates to latches, and in particular gravity latches. The latch comprises a housing which integrally mounts together with the latch a lock mechanism The latch can therefore be locked. The lock mechanism is such that the latch can also be locked in the open position.A further mechanism is also provided which enables operation of the latch from the opposite side of the fence, gate or door to where the latch is mounted.

Abstract: A security system for cargo loading doors, comprising: a substantially narrow profile housing adapted to being connected to an inside of a cargo loading door; an actuator having a key receptacle, for moving a latch structure between a locked position and an unlocked position; the latch structure and the actuator being coupled by a linkage mechanism and plunger assembly, the latch structure is adapted to be at least partially received in a header of at least one of a cargo carrying enclosure, such as an ISO container, domestic container, semi-trailer and the like, when the latch structure is in the locked position and withdrawn from the header when the latch structure is in the unlocked position; and the linkage mechanism includes a distal section and a proximal section connected by a middle pivot pin, the distal section is coupled to the latch structure with an upper pivot pin and the proximal section is coupled with the plunger assembly, the proximal section is also pivotably connected to the housing with a

Abstract: A hinge-lock security system for preventing relative motion between a door and a door frame.

Abstract: The invention concerns a lock system for a door, wall, chest, safe or cupboard, etc. The lock system is covered by a cover plate and has a bolt or pin which is linked to a main lever, designed to rotate about a pivot bearing, and which operates in conjunction with a holder plate or bolt. Rotation of the main lever depends on the motion of a first magnetic block mounted on the cover plate. The main lever has at least one bore designed to accommodate at least one locking pin associated with a second magnetic block mounted on the cover plate. The second magnetic block is designed to unlock the lock by pulling the locking pins out of the bores.

Abstract: A gate locking device for a fence which includes a security box having a mounting plate affixed within the box. The security box is mounted to a pole of the fence. An oarlock is hingeably mounted within the security box. The oarlock is capable of movement between an unlocked position and a locked position. In the locked position the oarlock engages another pole of the fence. A dead bolt is securely affixed to the mounting plate within the security box and is movable between an extended and unextended position. The dead bolt is disposed in mechanical relation to the heel plate of the oarlock so that when the dead bolt is moved to the extended position it substantially prevents the pivotal movement of the oarlock. A barrel lock is mounted to the security box and mechanically connected and adapted to the dead bolt for moving it between the extended and unextended position.

Abstract: A gate latch for a chain link fence comprising a collar for mounting on a first portion of a gate; an oar lock latch for pivotal mounting on a second portion of a gate, the oar lock having means formed thereon to lock the oar lock to the collar. A means is also provided which is formed on the collar for interfitting with the locking means and for enclosing a portion of the oar lock to lock the oar lock to the collar and inhibit access to the enclosed portions of the oar lock.

Abstract: A closing device includes a keeper provided with a retaining element for retaining a bolt in the keeper in a closed position of the device. The retaining element is mounted to be pivotable about and to be axially movable on a rod provided in the keeper and is resiliently biased to both axially slide on and pivot about the rod in such manner that, in an active position, the retaining element projects into an extension of an opening into which the bolt is capable of entering so as to close the device, and it is brought to a retracted position by axially sliding along the rod while being automatically returned to its active position from its retracted position as soon as the bolt is extracted from the keeper under the effect of the resilient force exerted by a spring.

Abstract: A locking system for security door or window includes a metal frame secured onto a house around the door or window. A lock is disposed in the metal frame and has a movable locking member that is movable between a locked position in engagement with a stationary locking member in the door or window when in a closed position in the frame and an unlocked position. A manually-actuated member extends through the metal frame and a hole in the door or window frame and includes an operating member inside the house and also within a guard secured onto the inside of the door or window frame enabling the operating member to be operated through an opening in the guard that opens away from the door or window opening to manually operate the lock from inside the house and prevents anyone from gaining access to the operating member.

Abstract: A door stile lock has a rotary latch bar. The rotary latch bar contains a compression loaded anvil within its interior. The latch bar rotates about the lock cylinder housing. The housing is provided with retention ports for engaging the compression loaded anvil at selected positions to inhibit rotation of the latch bar when the anvil is so engaged. Interior of the cylinder housing is an actuator rotatable by the lock key. The actuator raises the anvil from the retention ports and drives the latch bar about the axis of the cylinder housing between nominal locked and unlocked positions of the latch bar. The compression loaded anvil engages the retention ports in the cylinder housing at both the nominal locked and unlocked positions. A lock body engages the cylinder housing in a non-rotating manner. The lock body is then compressively engaged within the door stile.

Abstract: The latch comprises a latching mechanism, a locking mechanism, an electric motor actuating device for the locking mechanism and a key for manually actuating the locking mechanism and controlling the supply of current to the actuating device. The motor has an output gear which is located in the case of the latch and directly drives an element of the locking mechanism.

Abstract: A locking mechanism for a door which includes a locking member for securing an associated door in a closed position, apparatus for mounting the locking member to permit rotation about an axis, a first locking cylinder extending in a first direction which operatively cooperates with the locking member, and a second locking cylinder extending in a second direction which is opposite to the first direction, the second locking cylinder operatively cooperating with the locking member.

Abstract: A lock assembly having special utility for locking sliding doors and the like is disclosed. The lock assembly comprises a cylinder lock having a rotor case and a rotatable rotor disposed therein. The rotor has pin members configured such that upon insertion of an associated key into the rotor, the pin members retract and the rotor is rendered selectively rotatable in the rotor case. A movable runner is coupled to the rotor and a hook member is coupled to the runner such that when the runner is moved from the unlocked position to the locked position, the hook moves into a "deadlock" zone. A driver member is also connected to the runner to aid it in moving from its locked position to the unlocked position and vice versa.