Abstract: To endow such a device, of the type with a bolt (1) actuated by a key (2), with a high level of tamper-proofing and security without compromising its simplicity and reliability, the device includes two bolt-guiding members (3, 4) carried by one of the two elements, and the bolt includes a key-inserting aperture (114), two guiding ramps (112, 113) cooperating with the guiding members, and a third guiding ramp (115) cooperating with the key (2) when the latter is inserted into the aperture (114), in order to selectively actuate the bolt (1) from a locking position to an unlocking position, and vice versa, by rotation of the key. Use: devices for closing roadway or footway manholes, or underground technical chambers.

Abstract: A latch wherein latching and unlatching is accomplished by an inward push by the keeper into the latch housing. The latch uses an improved housing configuration in conjunction with improved internal components, allowing for more consistent and reliable operation.

Abstract: There is provided an improved sliding door handle assembly having a spring operated integral push button locking mechanism. Specifically, the improved sliding door handle assembly is comprised of a handle assembly including an upper handle section and a lower handle section, and a push button assembly. The upper handle section is recessed so as to incorporate the push button assembly and includes an opening for insertion of a cylindrical locking pin. The locking pin is spring-biased so as to move between a first position for locking the handle and a second position for unlocking the handle. The lower handle section is curved to facilitate gripping the door handle. The push button assembly includes a housing member and a push button member. The push button assembly has an opening to receive a push button member that is movable so as to engage and disengage the locking pin for locking and unlocking the handle.

Abstract: There is provided a lock system for securing a printer door to prevent theft of an ink cartridge. The lock system comprises a lock housing that is attachable adjacent the printer door and which has a lateral aperture extending generally parallel thereto. The lock system further comprises a locking member disposed within the lateral aperture and which is slidable therealong between unlock and lock positions. Its locking portion becomes substantially retracted within the lateral aperture when in the unlock position. The locking portion becomes extended over the printer door when in the lock position to secure the same and prevent theft of the ink cartridge thereby.

Abstract: A securable cane bolt is provided that depends from the bottom of a gate or door and extends into the ground to hold the gate or door in a closed position. The securable cane bolt includes a hand-operated fastening member that prevents the bolt from being raised until the fastening member is released, which fastening member is covered and rendered inaccessible when a second gate is closed adjacent to the first gate.

Abstract: An electronic anti-theft lock mainly internally includes an electromagnetic valve having a vertically movable rod; a locating mechanism that includes a turning plate adapted to shift the whole mechanism inward or outward in multiple steps, a restoring plate adapted to mechanically depress the rod of the electromagnetic valve at an upward extended position, and a stopper adapted to engage with the extended rod of the electromagnetic valve to stop the locating mechanism from moving inward further; and a control circuit adapted to detect a correct IC code of an inserted chip-contained key, and to excite the electromagnetic valve to extend the rod to stop a locking bolt of the locating mechanism from moving inward to open the lock only when an incorrect IC code is detected.

Abstract: This invention pertains to a mechanism for securing a container. The container includes at least one wall, which is comprised of at least a first door. The mechanism includes a first rod, which is attached with the outer surface of the first door. The first rod is capable of being rotated from an openable position, when the first door is capable of being opened, to a closed position, when the first door is engaged with the container to be closed. The mechanism further includes a channel member, which is attached with the inner surface of the first door, and a sliding member, which is slidably received within the channel member. The sliding member is engageable with the first rod. As the first rod is rotated from the openable position to the closed position, engagement of the first rod with the sliding member causes the sliding member to slide to secure the first door.

Abstract: A latch assembly for securing a cover to a container comprises a base for mounting to the container cover adjacent to an edge thereof, a cover member secured to the base and a slider slidable between the base and cover member between a latched position wherein a portion of the slider interfits with the container and an unlatched position wherein the slider portion is disengaged from the container. A headed spring member interposed between the slider and the base interfits with holes or recesses in the slider to signal when the slider has reached its latched and unlatched positions and to releasably retain the slider at those positions.

Abstract: A latch assembly for securing a cover to a container comprises a base for mounting to the container cover adjacent to an edge thereof, a cover member secured to the base and a slider slidable between the base and cover member between a latched position wherein a portion of the slider interfits with the container and an unlatched position wherein the slider portion is disengaged from the container. A headed spring member interposed between the slider and the base interfits with openings in the slider to signal when the slider has reached its latched and unlatched positions and to releasably retain the slider at those positions.

Abstract: A locking assembly for an astragal that would be attached to the inactive door of a double door unit that would be installed in a residence or a building. The astragal would be attached to the edge of the inactive door in the space between the inactive door and the active door. A separate locking assembly would be attached adjacent the top end of the door and also adjacent the bottom end of the door. A plug having an elongated locking bolt extending from it is mounted in the front end of the carriage member. Additional structure is provided for reciprocal travel of the carriage member between a locked position and an unlocked position.

Abstract: A closing device for a control cabinet door, machine casing or the like, having a security unit with a lock attached to the control cabinet door, machine casing or the like, with a first locking part and a second locking part fixed to the door frame, machine frame or the like. The two locking parts can be made to cooperate with each other or not by application of an electric signal. In a closing device there is a locking and unlocking mechanism suitable for use with all usual types of lock. Thus a lock is used which has a locking mechanism that can be rotated in different directions and in which a locking member subjected to a spring tension is movably guided. In addition, when in a locked position the locking member subjected to a spring tension prevents the rotation of the locking mechanism.

Abstract: A door lock which can be operated electrically, remotely, or mechanically using a lever or a key. The lock utilized a blocking bar which engages or disengages a notch in a locking latch. When the blocking bar is engaged within the notch, the latch is positioned in a strike plate of a door frame thereby locking the door. When disengaged, the latch can be retracted from the strike plate thereby allowing the door to be opened.

Abstract: A dead-bolt locking device for preventing a dead-bolt lock from being picked open. The dead-bolt locking device includes a generally rectangular support member having a back side, a front side, a front end, and a back end, and also having a track disposed in the front side and extending through the front end and terminating near the back end; and also includes a locking member having a back side, a front side, a front end, a slot extending through the front end and being adapted to receive the handle of the dead-bolt lock, and a boss integrally attached to the back side and being slidably received in the track; and further includes a handle member integrally attached to the front side of the locking member.

Abstract: A lock with a latch bolt (41) has a translating part (65), which can be moved by a hub which can be turned by a button and/or key operation so that it controls an additional extension of the latch bolt (41) into a locking position and blocks the latch bolt in this locking position.

Abstract: A holdback dog for a mortise lock including a holdback dog slidably mounted to a tab on the mortise lock locking link. The holdback dog is activated by first retracting the latchbolt using the inside handle and then unlocking the lock using either the key cylinder or the inside thumbturn. When the lock is unlocked, the locking link moves downward, placing a tab on the holdback dog slide in confronting engagement with a corresponding tab on the bolt slide. After the inside handle is released, the holdback dog tab holds the bolt slide, and therefor the latchbolt, in the retracted or "dogged" position. For normal or "undogged" operation, the slidable mounting of the holdback slide allows the bolt slide tab to engage the holdback dog tab and push the holdback dog slide out of the way, when the lock is unlocked and either handle is operated, thereby permitting normal operation.

Abstract: A locking mechanism for a notebook computer has an ejecting unit which elastically pushes a latch up to a certain height. The ejecting unit includes an elastic member installed at a main base panel of the notebook computer and an ejector for pushing the latch up due to the elastic member when a display panel is to be opened. Thus, the notebook computer can be easily opened and closed and also the external appearance of the notebook computer looks more aesthetically pleasing.

Abstract: The device includes a housing having an aperture for the introduction of an engagement member fixed to the door, a retainer member mounted movably in the housing and movable between a working position in which it holds the engagement member when the door is closed and enables the domestic electrical appliance to operate, and a rest position in which it allows the engagement member to be released when the door is open and the engagement member to enter the aperture when the door is closed. An electromechanical control device includes a movable locking element movable under predetermined conditions, into a locking position in which it prevents the retainer member from moving from the working position to the rest position. The device further includes stop elements which lock the retainer in the rest position when the door is open, and release this retainer member when the door is closed.

Abstract: A closure for a switchgear cabinet door, machine case or the like, having a safety device. A lock is attached to the switchgear cabinet door, machine case or the like with a first locking element, and a second locking element is attached to the door frame, machine case frame or the like. Both locking elements can be brought into and out of functional connection with each other under the control of an electric signal. Additional locking of the closure can be simply achieved with commercially available locks because the lock has a turnbuckle, which can be rotated by 90.degree., as the first locking element, and an electromagnet is attached to the door frame or the machine case frame, whereby a locking member as the second locking element can be displaced into and out of the pivot range of the turnbuckle.

Abstract: Two mating L-shaped steel sheet casing members in one embodiment for sliding doors are secured to a corresponding door and have overlying front walls in the closed state. Each member has a plurality of corresponding locking keeper elements. In the closed state the keeper elements are in interdigitated juxtaposed and preferably welded to the casing members via through optional bores in the casing members, or extend through the side walls of the casing formed by side wall sections. The keeper elements in one subassembly are slotted to allow for misalignment with the other keeper elements for receiving a locking bolt seal shaft. The keeper elements optionally have tongue projections for engaging a gap between the closed doors. An angle iron member shields the rear of the chamber below the lowermost locking element to protect the seal locking body. Other embodiments are disclosed and include cast assemblies with no weldments and a single casing and hasp for use with swinging doors or a rail car plug door.

Abstract: In a lock fitting for sliding closures a bolt-carrier includes a screwthreaded hole with its axis perpendicular to a covering plate to receive a screw for immobilizing a bolt on the bolt-carrier. The covering plate has an orifice for access to the screw and to the screwthreaded hole on the axis of the screwthreaded hole when the bolt-carrier is in its locked position. The fitting includes a plug to blank off the orifice. The plug can be retracted inside the casing to allow access to the screw and then returned to its normal position in which it blanks off the orifice.

Abstract: A door lock includes an external locking unit and an internal locking unit mounted on the door body of a door at outer and inner sides to hold a lock cylinder, and a locking bolt unit controlled by the external locking unit to lock/unlock the door, the internal locking unit having a circular base block fixedly fastened to the door body, a rotary cover rotatably mounted on the circular base block, a shaft forced by a spring member into engagement with the spindle of the lock cylinder, and a sliding knob mounted on the rotary cover and shifted between a first position wherein the rotary cover and the spindle of the lock cylinder are stopped from rotary motion, and a second position where the rotary cover and the spindle of the lock cylinder are allowed to be rotated between the locking position and the unlocking position.

Abstract: A door locking assembly is provided including a base having a pair of halves. A first one of the halves is adapted for being mounted to a door and a second one of the halves for being mounted on a door frame. The halves each include a slot formed therein. A sliding bar is included having a first orientation in engagement with both slots of the base for precluding the door from being opened and a second orientation with only one of the slots of the base receiving the sliding bar for allowing the door to be opened. Next provided is a cover removably mounted over the sliding bar for precluding the same from being removed from the first orientation. For precluding the removal of the cover, a locking mechanism is included which is adapted to engage both the cover and the sliding bar.

Abstract: A chest lock has a linking action and consists of a base, a lock tool set mounted on the base and composed of a lock tool and two linking members which are located at two ends of the lock tool, two retaining members disposed at two ends of the lock tool set such that the retaining members are actuated by the linking members to slide on the base, two lock retainer sets consisting of a lock retainer seat, a slide block and a lock retainer. The lock retainer seat is disposed at one end of the base for the retaining hook to be inserted thereinto. The outer ends of the retaining members are inserted into the lock retainer seats. The slide blocks are slidably disposed in the lock retainer seats and provided with a retaining portion corresponding to the retaining hook. The lock retainer has a body which is pivoted at one portion thereof with the lock retainer seat, and connected at other portion thereof with the slide block.

Abstract: A locking receptacle and a locking device for securing a mailbox, package delivery box, or other receptacle requiring a single opening of the receptacle door for a mailperson or package delivery person to insert a package being delivered and upon subsequent closing of the door locking until unlocked by a person having a key or combination therefor to receive the delivery. The locking device mounts to the inside of the receptacle and has an arm which is pivotally attached to the door of the receptacle and to a reciprocally pivotal locking disk. A first pivoting lever is positioned to engage a slot in the periphery of the locking disk when the door is closed so as to restrain the locking disk and the door in a closed position. A spring-biased, reciprocally pivotal counting disk is arranged to turn with the locking disk as the door is opened and to lock in that position by means of a second pivoting lever which engages a slot in the periphery of the counting disk.

Abstract: A lock which can be accommodated within the thickness of an opening panel includes two nuts rotatable about a common axis and attached to respective corresponding operating members. Each nut can turn freely about its axis relative to the other nut. The latch bolt is attached to a selector member mobile between two predetermined positions in the transverse direction corresponding to the thickness of the casing of the lock. Each nut is attached to a corresponding arrangement of the lock adapted to engage with the selection member when the latter is in its position near the nut, in order to actuate the latch bolt when the nut is turned in a first direction corresponding to retraction of the latch bolt and to remain disengaged from the selector member when the latter is in its other position near the other nut.

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: An electronically controlled security lock is provided for use with safes, vaults, hotel rooms, safe deposit boxes, and the like. The security lock includes a housing having an interior region, exterior surfaces, and an aperture therethrough with a pair of opposed channels. The security lock also includes a dead bolt which is slidably disposed within the aperture of the housing, an actuator with a movable plunger element such as an electromagnetic solenoid which is arranged within the interior region of the housing, and a linkage which connects the plunger element and the dead bolt. The linkage of the security lock includes a pin which is received by openings formed in the dead bolt and by the channels of the aperture. In operation, the plunger element of the actuator moves the linkage and the dead bolt when an electric current is passed through the actuator.

Abstract: Fire control systems and release mechanisms. The release mechanisms of the present invention comprise a digital logic circuit for processing signals which are indicative of a condition in an outside environment, and for providing a trigger that will actuate the mechanical release mechanism in response to the condition, a power circuit for providing regulated power to the electronic circuit in response to the input power, the regulated power being used to operate the digital logic circuit, and a power backup circuit interfaced to the power circuit for providing the regulated power for a predetermined time in the event of an input power failure so that the digital logic circuit can be operated for the predetermined time during the input power failure.

Abstract: This invention relates to a bolt housing, and in particular to a housing for a sliding bolt; to a pair of bolt housings, to an assembly thereof for the securement of a first housing relative to a second housing and to panels fitted with one of the said housings. Thus, there is provided a bolt housing which includes a bolt and bolt guide, the bolt having a bolt tip, the bolt being slidably mountable in the guide, the housing having a surface beyond which the bolt tip can project, the guide being at an acute angle to the said surface. There is also provided a bolt assembly comprising a bolt housing as defined herein, the said housing being a first housing, and the said bolt guide being a first bolt guide, the assembly including a second housing, the second housing having second bolt guide, the second bolt guide being alignable with first bolt guide, the bolt being movable into and out of the second bolt guide when the said first and second bolt guide are aligned.

Abstract: A lock for securing a window sash against a window frame, including a housing mountable on a face of the window frame, and a handle extending generally longitudinally between first and second ends and pivotable in the housing about an axis disposed substantially halfway between the handle ends and oriented substantially transverse to the handle longitudinal direction. The handle includes a pivot at each handle end, and a pivot link is pivotably securable on one end to a window locking mechanism and pivotably securable on its other end to a selected one of the handle pivots. The housing has a substantially planar first face which is substantially the entire surface of the handle visible in the housing opening when the handle is in the first position and is substantially co-planar with the housing first face when the handle is in the first position. A slide is selectively movable into a recess in one of the handle ends to block pivoting of the handle.

Abstract: A lock assembly of a door preparation includes at least one spring latch member which is spring biased within a door jamb bore between an extended position and a retracted position in which the spring latch member, when the door is being opened, engages a strike plate of the door jamb and is moved inwardly within the door preparation for allowing the door to be opened. A dead bolt, which operates independently from the spring latch member, is movable between a retracted position in which it is within the door preparation and an extended position in which it is extended within the door jamb bore for locking the door. A projecting pin is movable between a first position in which the projecting pin is disposed generally between the spring latch member and dead bolt and a second position in which the pin projects laterally outwardly from a peripheral edge of the spring latch member when the dead bolt is moved to its extended position to engage the strike plate.

Abstract: A multi-point locking system (10) has a lock case (11) with a door front edge (20), a latch (65), a blocking bolt (80) and two longitudinally movable push rods (30, 31) connected to one another by a connecting element (40) with locking elements such as eccentrically mounted roller pins (33) engaging in striking plates (34). The connecting element (40) has an engagement recess (46), is arrestable by a spring-loaded engaging element (52) against a compression spring (48) in a pretensioned opening position, and is releasable from this arrested position by direct operation of the locking elements (33) in the longitudinal direction of the door front edge. The striking plates (34) in the entry area (36) of the locking elements (33) have inclined stop surfaces (37) exerting a force (F) on the roller pins (33) in the closing direction (Y). The slidingly guided bolt (80) blocks the locking system (10) indirectly via a flexibly mounted rocker (91) using a closing element (81), for example a locking cylinder.

Abstract: A carton closure apparatus releasably and securely closes a carton having a rectangular bottom, four side walls, two minor top flaps connected to the shorter two walls, and two major top flaps connected to the longer two walls. The apparatus has two parts. The first part is an insert that has a planar surface and a latching member that extends away from and at a right angle to the planar surface. The second part is a socket that has a receiving member for releasably and securely engaging the latching member of the insert. The socket is attached to one of the shorter side walls of the carton at a point along the top edge and equidistant from the adjoining side walls. When the two major top flaps are folded over the two minor top flaps and the insert is placed into the socket with the insert's planar surface extending over a portion of each of the major top flaps, the carton is releasably and securely closed.

Abstract: A latch housing defines an axial passage accessible at opposite ends thereof. Latch elements are radially displaced about the axis of the axial passage. A solenoid is mounted to an end of the latch housing and a post is inserted axially into the opposite end of the axial passage. The latch elements are biased to constrict around and preclude withdrawal of the post from the axial passage. An armature of the solenoid extends into the axial passage and a disengagement plate is attached to that end of the armature. As the post is inserted into the axial passage, a slot in the post mates with the disengagement plate, and the terminus of the slot contacts the disengagement plate causing the disengagement plate to translate along the axial passage with the post.

Abstract: A door locking apparatus of the invention is suitable for locking and unlocking a door of a dispenser and a case thereof. The apparatus includes a door lock mechanism situated between the door and the case for latching the door at a locked position, a solenoid mounted inside the door for releasing the door lock mechanism, a receiver mounted inside the door and connected to the solenoid, and a transmitter for sending an ID signal from an outside of the door to the receiver. When the receiver receives the ID signal from the transmitter, the solenoid actuates to release the door lock mechanism. Since the door lock mechanism is not seen from the outside of the door, the lock is protected from bad mischief and burglary.

Abstract: A security locking device for releasably locking gates, doors and the like is made up of a bolt receiver and a locking bolt assembly, the locking bolt assembly including a slidable locking bolt which extends through a mounting tube for slidable movement between an extended locking position in the bolt receiver and a retracted, unlocked position removed from the receiver, and a locking wedge extends through slots in the mounting tube and locking bolt to retain the locking bolt in the locking position, the wedge in turn being locked securely in position by a locking member within the mounting tube. Mounting brackets are provided for tamper-proof attachment of the bolt receiver and locking bolt assembly to the respective members to be releasably locked.

Abstract: A door lock, particularly well suited for use with a safe which includes a movable door latch mechanism having a lock bolt abutment surface. The door lock comprises a casing having a locking bolt-receiving aperture in one of its walls. The casing is to be mounted to the door, for example, on the inside surface of the door with the bolt-receiving aperture adjacent the bolt-abutment surface of the door latch mechanism. A locking bolt is longitudinally slidably mounted with the casing for movement at an acute angle relative to the bolt abutment surface of the door latch mechanism between a locked position projecting through the aperture in the casing and into abutment with the abutment surface of the door latch mechanism and an unlocked position out of abutment with the abutment surface of the door latch mechanism and retracted into the casing.

Abstract: A retainer for securing and retaining a pre-hung door unit in a closed position relative to a door jamb assembly. The retainer includes a shaped cylindrical plug configured to fit closely in the edge bore of the door. A configured end of the plug accommodates both circular and rectangular bores that are normally provided in the strike side of the door jamb. The plug is inserted into the edge bore of the door and the door is closed relative to the door jamb assembly. The plug is then moved in the edge bore so that the configured end engages the bore in the strike side to thus secure the door in the closed position. Slots provided in the configured end of the plug are arranged to receive a retention tab to secure the plug in position. The retainer is particularly suited for door jamb assemblies that have a blind bore in the strike side.

Abstract: A play enclosure apparatus includes a plurality of panels that are detachably connectable to each other at their sides to form a play enclosure. The panels may be connected to form enclosures of various shapes, and two of the panels may be connected to trap the remaining panels between the two panels for portability or storage.

Abstract: A gravity responsive apparatus for the carriage of paint and paint application related tools suspended upon the hip of a painter which consists of a hip-supported, belt-attached base member which is flexibly attached by means of a separable ball and socket joint to a freely swinging sealable paint container and fitted tool carrier. Use of the device allows a painter to easily and safely scale ladders and scaffolds without danger of paint spillage and upon arrival at the place of application of paint to simply flip open and fold back the hinged, gasketed cover for access to the paint supply. A variety of painters preparation and application tools may be carried in the integral tool rack which is a part of the apparatus. The freely swinging construction allows the painter to assume almost any position without the probability of paint spillage or tool droppage and being fabricated of a smooth, seamless material, is readily cleanable and requires little care or maintenance.

Abstract: A lock assembly for locking a door to a frame element, comprising a rotatable locking element and a locking rod connected to the rotatable locking element. Rotation of the locking element in one sense results in the locking rod moving toward a first side of the frame element and rotation in the other sense results in the locking rod moving away from the first side of the frame element. The lock assembly also comprises a pin having a first end and a second end, wherein the first end selectively engages the rotatable locking element at an engagement position so that the locking element is prevented from rotating. The lock assembly comprises a pin actuating mechanism for moving the pin from the engaged position to a disengaged position wherein the pin does not engage the locking element.

Abstract: A modular rail system is provided for supporting accessories on a pick-up truck bed. The system comprises first and second rail assemblies overlying the top surfaces of the first and second truck bed side walls for releasably connecting with the side walls. A flexible cover overlies the bed for covering and providing protection for the bed. A locking mechanism is likewise provided and is associated with the cover and the rail assemblies for lockingly attaching the cover to the rail assemblies and securing the cover in place over the truck bed. The rail system may additionally include a tie-down bar, a light bar, a utility box, a camper top, and a single or multi-piece bed liner, each of which is supported and connected to the rail assemblies.

Abstract: A conversion kit allows a user to convert a deadbolt lock mechanism into a pick proof deadbolt lock mechanism by providing all the necessary parts allowing a user to easily and effectively prevent the turnpiece latch of the deadbolt lock mechanism from rotating. Once installed, a locking shaft pin of the kit can be placed into a first orifice drilled through the turnpiece latch and a second orifice, coaxially aligned with the first orifice, drilled through the backplate to immobilize the turnpiece latch in its locked position. It would also allow a deadbolt manufacturer to use the same, in which case collars could be an O-ring style.

Abstract: A security lock for doors of dwellings, gates and the like comprises a pump-type locking mechanism for operating a bolt, and a double-bit locking mechanism for locking the pump mechanism in its locking condition. The lock preferably has both a key which can operate only the pump mechanism and a key which can operate both mechanisms. A cover made of plastics material is associated with the key and can be fitted onto the operative portion of the key in order to protect its teeth against dirt and against the risk of breakage as a result of the key being dropped.

Abstract: A conversion kit allows a user to convert a conventional deadbolt lock mechanism into a pick proof deadbolt lock mechanism by providing all the necessary parts allowing a user to easily and effectively prevent the turnpiece latch of the deadbolt lock mechanism from rotating. Once installed, a locking shaft pin of the kit can be placed into a first orifice drilled through the turnpiece latch and a second orifice, coaxially aligned with the first orifice, drilled through the backplate to immobilize the turnpiece latch in its locked position. It would also allow a deadbolt manufacturer to use the same, in which case the collars could be a rivet style.

Abstract: A latch assembly for door locks. The latch assembly has (A) a box-shaped frame having two parallel plates each having a rectilinear slot, a curved slot with a middle section, (B) a first terminal section, (C) a second terminal section having a first shoulder and a second shoulder and (D) a hole for receiving a lock core. A dead bolt has (E) a first portion which is pressed by a finger extending from the core for retracting the dead bolt into the box-shaped frame, (F) a second portion which is pressed by the finger for moving the dead bolt out of the box-shaped frame, (G) a connection coupling the first portion with the second portion, (H) a recess extending in the connection, and (I) a passage transversely extending through the connection. A pin extends through the passage formed in the detent and its two ends are slidably received in the rectilinear slots.

Abstract: The present invention is an improvement on an inner cylinder lock and more specifically, on the bolt thereof. The bolt engages an opening in the rear case of the inner cylinder lock. The improvement on the bolt prevents the bolt from moving in a lateral direction and restricts the travel of the bolt in a direction transverse to the lateral direction. This is accomplished by providing two generally rectangular projecting members, each of which extends from opposite sides of the bolt. The projecting members fit into accommodating channels which are disposed within the opening in the rear case. The bolt also has a cavity located in its rear. The purpose of the cavity is to receive a spring biased locking pin. The spring biased locking pin is located in the posterior wall of the rear case. During normal operation, the bolt is limited in its travel by a pin engages the bolt. The projecting members prevent lateral movement of the bolt.

Abstract: A handle lock having two handles to be symmetrically fixed on the inner and the outer bearing plate fixed on the inner and the outer side of a door, each handle assembled with a tubular shaft and a square shaft to retract a dead bolt to open the door, a locking rod combined in the inner bearing plate and being movable therein to permit the tubular shaft either to be rotated to open the door or to be prevented from being rotated by the handle either outer or inner, to lock the door.

Abstract: An improved double latch dead bolt lock operating mechanism wherein the dead bolt has a keyway engaged by a key for guiding the latching and unlatching movement of the dead bolt but allowing vertical movement of the dead bolt for accommodating any undesired engagement of the operating cam with an improper portion of the dead bolt. The dead bolt is resiliently urged vertically toward the operating cam to return the dead bolt to its normal vertical position after the cam to passes that improper portion of the dead bolt.

Abstract: A lock operator located between a backing plate and sliding cover includes pivot plate for activating and deactivating the main boltworks and a relocker, an overtravel stop assembly for sequestering the pivot plate to prevent relock, a spring braised knob for locking the pivot plate in the locked or unlocked position, a pin for locking the sliding cover, pivot plate and locking plate in the locked position and means for automatically activating/deactivating the overtravel stops assembly.