Abstract: An elongated channel protector has an end wall that precludes axial displacement of the protector along an elongated rail car plug door operating handle in one direction. Angle shaped members extend from the protector laterally for engaging a cover appurtenance on the door for precluding axial displacement of the protector in the opposite direction. A pair of legs depend from the protector side walls and have aligned holes for receiving a bolt seal. Tubular elements surround the holes to protect the seal head and locking body. The seal is seated beneath the handle which is covered by the protector locking the protector to the handle.

Abstract: An apparatus, latch assembly, keeper and installation method for use in slidable partition applications utilize a keeper formed of first and second angle members that are secured together in an overlapping relationship to define a U-shaped channel within which is disposed a tubular guard projection for protecting a latch from tampering by unauthorized personnel. Optional guard members may also inhibit access to the U-shaped channel when the slidable partition is engaged in a closed orientation.

Abstract: A door jamb extension apparatus is provided for filling a gap between a door-mounted box and a door jamb and includes an inner or first wall portion, an intermediate wall portion connected to the inner wall portion, and an outer or second wall portion connected to the intermediate wall portion. The inner wall portion and the outer wall portion are mounted on a portion of the door jamb, and the inner wall portion and the outer wall portion fill the gap between the door-mounted box and the door jamb. By filling the gap between the door-mounted box and the door jamb, a spreader bar cannot be used to damage the door-mounted box. Preferably, the door jamb includes a door jamb lip, and the inner wall portion and the outer wall portion are mounted on the door jamb lip.

Abstract: As herein described a plastic or metal hollow frame device which when mounted within the bolt cavity on a door frame and therefrom extending outwards with curved ‘U’ shaped arms through the strike plate aperture mounted concentric with and above the said frame bolt cavity, and thence into the space between the door frame and the edge of the closed door, i.e. the door gap, upon which door is mounted an associated spring bolt door lock, in such a manner that when the spring bolt is located within the strike plate aperture and the frame bolt cavity, i.e.

Abstract: A structure for reinforcing doorjambs wherein first and second reinforcement plates (32 and 42) are located between the doorjamb (16) and the structure frame (34). Reinforcement plates (32 and 42) are arranged in overlapping fashion and are provided with respective bolt holes (26 and 48) that are in registry with a bolt hole (26) of the doorjamb (16). The overlapped reinforcement plate structure provides improved strength and greater flexibility for ease of installation.

Abstract: A doorjamb strengthening device comprising an interior metal plate (1), a primary interior cylindrical reinforcing member (5), an aperture (11), a secondary cylindrical reinforcing member (6), an exterior metal plate (2), a primary exterior cylindrical reinforcing member (9), and a secondary exterior cylindrical connecting member (10). Interior metal plate is fastened to exterior metal plate by means of an interference fit between primary interior cylindrical reinforcing member and primary exterior cylindrical reinforcing member and secondary interior cylindrical connecting member and secondary exterior cylindrical connecting member.

Abstract: A reinforcing structure of a latch of an auxiliary lock includes a lock tongue set having a lock tongue provided with at least one flat surface. A reinforcing plate is fixed in the gap between the flat surface of the lock tongue and the housing, so that the housing may withstand and support a larger external impact force.

Abstract: A vehicle door lock assembly has a latch (12) for mounting on a vehicle door. The latch (12) has at least one release lever for effecting releasing of the latch and at least one locking lever (14) for locking the latch, disabling the release lever, and unlocking the latch, enabling the release lever. A compound linkage (20, 24; 20, 124) operatively engages the locking lever (14). A lock cylinder (30, 130) has a spindle (28) which engages the linkage. The spindle (28) rotates in response to keyed rotation of a matched key being received by the lock cylinder (30; 130) which drives the linkage (20, 24; 20, 124) to effect movement of the locking lever (14). The spindle (28) is axially slidable to disengage the spindle from the linkage. A hollow shield (34) shrouds the locking lever (14), the linkage (20, 24; 20, 124) and the engagement between the linkage and the spindle (28), preventing access thereto. If the spindle is removed, the linkage will pivot away preventing manipulation thereof.

Abstract: A Spring Bolt Guard consisting of a metal or plastic ‘U’ shape with a base plate, wherein a locating screw hole has been drilled, which base plate extends out into the ‘U’ shape from the base of the ‘U’ shape such that when the described form is screwed into the spring bolt retaining cavity cut into the door frame the top of the ‘U’ shape fills the gap between the door frame and the door edge thus preventing plastic or metal shims being used to force the spring bolt back into the lock housing and by this means allowing the door to be illegaly opened without the use of a key.

Abstract: A reinforcing plate comprising an elongated portion adapted to be secured to a door jamb in a first plane; a plurality of tabs in a second plane perpendicular to the first plane and adapted to be secured to a mounting surface of one or more wall studs adjacent the door jamb; and an L-shaped connecting portion between each tab and the elongated portion. Each L-shaped portion comprises a first spacer in a third plane parallel to the second plane and a second spacer in a fourth plane parallel to the first plane. The second spacer has a depth essentially equivalent to a distance between the mounting surface of the wall studs and a finished wall surface. The reinforcing plate further comprises at least one means for interfacing with an element attached to a door mounted in the door opening, such as a peek chain flange with a peek chain attached thereto, a dead bolt receiving opening, and/or a plunger bolt receiving opening.

Abstract: A reinforcing structure of a latch of an auxiliary lock includes a lock tongue set having a lock tongue provided with at least one concave portion. A reinforcing plate is fixed in the gap between the concave portion of the lock tongue and the housing, so that the housing may withstand and support a larger external impact force.

Abstract: A door latch cover for automotive vehicle, the door latch cover fixedly arranged to encompass a door latch connected by a door lock actuator to be locked and to be unlocked and so constructed as to prevent the door latch from being actuated from outside through a door glass and a weather strip, wherein the door latch cover is integrally formed with an extended for blocking an upper part of the door lock actuator and for preventing the door lock actuator from being actuated from outside, such that once a door is locked, the door latch and the door lock actuator are prevented from being forcibly unlocked from outside by odd object such as steel ruler or the like, thereby blocking an unlocking of the door and reducing the number of assembly process at the door latch assembly as well.

Abstract: A securing device for securing a door panel and a complementary door frame housing a latch means in a closed configuration against forced entry. The securing device includes receiving means mounted on the length of the door frame and an engaging means mounted on the length of the door panel, wherein a portion of the engaging means is pivotable between a first configuration and a second configuration. In the second configuration the portion of the pivotable engaging means is nested within the receiving means thereby preventing the door from being forced open. The engaging means is moved between the first and second configurations by a latch engaging means which interconnects the pivotable portion of the engaging means with the latch.

Abstract: Latch assembly for a vehicle door 10 (FIG. 1) hinged at its leading edge has an L-shaped housing plate 20 to be secured in the trailing inside edge comer of the door and carrying latch mechanism. Inner skin 14 of the door is cut away to admit a striker 18 into a mouth of the plate for engagement by the mechanism to keep the door shut. A projecting abutment rib 28 of the plate adjacent the mouth prevents or resists rearward displacement of the trailing edge of skin 14 which could otherwise obstruct the mouth in the event of impact damage to the door.

Abstract: A structure for reinforcing doorjambs wherein first and second reinforcement plates (32 and 42) are located between the doorjamb (16) and the structure frame (34). Reinforcement plates (32 and 42) are arranged in overlapping fashion and are provided with respective bolt holes (26 and 48) that are in registry with a bolt hole (26) of the doorjamb (16). The overlapped reinforcement plate structure provides increased strength and greater flexibility for ease of installation.

Abstract: A latch guard is secured to the surface of a door to which a door's latching mechanism is secured and therefore cannot be removed when the door is in a closed position. The latch guard comprises a latch bolt tumbler, a face plate integrally formed with the latch bolt tumbler, and a protection bar formed integrally with the face plate. The face plate aligns with the surface of the door and therefore is acceptable for use with door and door frame combinations having little clearance there between. According to another aspect of the invention, a latch guard system comprises a latch guard and a strike plate. The strike plate has a recess area formed therein to accommodate the latch guard when the door is closed upon the door frame.

Abstract: An anti-theft latch is proposed. The anti-theft latch has a movable stud having a driven means therein. A pin serves to connect the movable stud with the driven means. The driven means is pivotally installed with a static latch. A guide groove is formed on the static latch. The pin is matched with the guide groove. The guide groove of the static latch is formed with a buckling portion. When the movable stud is to be unlocked by an outer force, the pin will eject and buckle the buckling portion so that the static latch can not retract to the movable stud to achieve an effect of statically locking. An auxiliary spring is further installed for pushing the driven means to move forwards. Therefore, in a normal condition, the static latch will achieve an effect of statically locking. As a result, the thief has no possibility to unlock the movable stud to move inwards and therefore, a preferred anti-theft effect is achieved.

Abstract: The sash lock has a rotatable cam which engages the keeper. The sash lock has a slide plate mounted below the cam and the slide plate moves between a retracted position in which its leading edge is flush with the sash to which the lock is mounted. In an extended position in which the leading edge of the plate extends far enough to block the narrow gap between the sashes. The slide plate is mounted for movement perpendicular to the edge of the sash and parallel to the plane of the top surface of the sash. The slide plate includes an arcuate recess in one side of the plate which is engaged by a pin extending from the rotatable cam. The recess in the slide plate is contoured so that during initial portion of the movement of the cam from its open position toward its locked position, the slide plate does not move.

Abstract: An interlocking door seam provides a stronger seam for double doors, making them less subject to attack by prybars and the like. Particularly for central mail stations (CMS) and central box units CBU, double doors present there are subject to attack by prybars and the like that force the locks and allow thieves to rifle the contents of the enclosed mail boxes. Attachment of interlocking door seam to the first edge of the first double doors protects that first edge from prybar attacks. The adjoining edge of the second double door then releasably fits into a convex strip that protects the adjoining edge of the second double door, thereby protecting it from prybar attack. The interlocking door seam allows normal operation of the double doors while decreasing the risk to the central mail station of prybar attack at the seam between the double doors. Flanges present along the free edge of the convex strip provide easy engagement of that free edge.

Abstract: This vehicle security device (40) is a metal plate (38) bolted to a door handle unit inside a vehicle door to prevent unauthorized unlocking of a vehicle door by jamming a thin tool into a vehicle door. And, device (40) prevents unauthorized unlocking of a vehicle door by inserting a thin tool between the seam between the window glass and the flexible molding around a door window frame of a vehicle door. When installed, the device (40) blocks access to the inner end of a lock cylinder (10) by preventing the insertion of thin tools directly to the inner end of the lock cylinder (10). This device (40) is comprised of a configured metal plate (38), angled on its upper end to extend horizontally toward the inside of a vehicle door; one or more bolts (43); one or more spacers (42); and one or more lock washers (41). The metal plate (38) has a rectangular-shaped cut out (45) to accommodate placement adjacent to the key-turnable inner end of a door lock cylinder (10).

Abstract: Security vault to protect valuable items. The vault has a redundant number of members which combine to deter the entry and subsequent attempted damage to or destruction of the vault. A body has an open end which is surrounded by a strength band connected to the body. A recess is defined between the strength band and the open end of the body. A door to the vault has open and closed positions and, in the closed position, an edge extension of the door enters into the recess. Rod loops are connected between the body and the strength band and act as locking members for complementary pawls which are mounted on the interior of the door.

Abstract: An anti-theft protection device for a motor vehicle. In an exemplary application, the anti-theft protection device for a motor vehicle includes a passenger door watershield having a pass-through slit formed therein and an anti-theft sleeve located proximate thereto which encloses and protects the passenger door link rods.

Abstract: A door locking system for child-safety door locking systems on an automobile door including a latch and a door lock mechanism. The door handle is incapable of unlatching the door when the locking mechanism locks the latch. The locking system includes a door panel having an opening for receiving a lock button mounted on a lock rod connected to the locking mechanism and movable between locked and unlocked positions. A shield is movable within the opening relative to the lock button and door panel between a retracted inoperative position corresponding to a normal lock mode in which the shield is recessed in the opening for accessing the lock button for moving the lock button between its locked and unlocked positions, and an extended operative position corresponding to a guard lock mode in which the shield extends outward of the opening to shield the lock button in its locked position to prevent access to the lock button for manual movement to its unlocked position.

Abstract: The sash lock has a rotatable cam which engages the keeper. The sash lock has a slide plate mounted below the cam and the slide plate moves between a retracted position in which its leading edge is flush with the sash to which the lock is mounted. In an extended position in which the leading edge of the plate extends far enough to block the narrow gap between the sashes. The slide plate is mounted for movement perpendicular to the edge of the sash and parallel to the plane of the top surface of the sash. The slide plate includes an arcuate recess in one side of the plate which is engaged by a pin extending from the rotatable cam. The recess in the slide plate is contoured so that during initial portion of the movement of the cam from its open position toward its locked position, the slide plate does not move.

Abstract: A metal door frame reinforcing apparatus is of "U" shape and is attached to the inside of the door frame so as to enclosed that section of the door frame within the "U" shape and thus direct any striking forces toward that section of the wood that is enclosed by the apparatus thus increasing the amount of wood that must be broken in order to force the door. The apparatus has a main section and two side flanges that are connected to the inside and outside panels of the door frame and thus enclose the door jamb area of the door frame within the flanges. There is a hole in the main section for the placement of the dead bolt.

Abstract: A burglarproof device for a sliding leaf including at least a locking organ capable of being protruding with respect to the front edge of the sliding leaf, so as to cooperate with a keeper inserted against the corresponding stile of the sash-frame. This burglarproof device includes a burglar-safe case defined by an inner wall and an outer wall extending perpendicularly to a bottom provided with an elongated slot through which passes the locking organ; and a keeper formed by a cap including an opening for receiving the locking organ, this cap being capable of covering a bearing capable of being inserted in the fillister of the sash-frame. This cap has a shape without undercut impeding a tool from being hooked in during an attempt of burglary.

Abstract: A tamper-proof locking mechanism for a vehicular engine compartment, the compartment having a (a) hood closure member with a striker secured within the compartment to the hood; (b) a latch mechanism having a movable latch for catching and holding the striker when such striker is brought into a predetermined position relative to compartment; (c) a bracket secured or connected to the other closure member having (i) walls secured to the latch mechanism for fixing such mechanism in a desired spatial position for receiving the striker, (ii) a saddle with spaced walls defining a track closed at one end by the saddle; and (d) a lock having a housing provided with (i) a tumbler body slidable in and along the track and nestable on the saddle for being secured in an operative position, (ii) housing flanges at opposite regions of the body that overlap the edges of both of the spaced saddle walls, each flange contacting the edges of the side walls at one end of the body to ride thereon and fit flush thereagainst as well

Abstract: An anti-theft device is constituted by an elongated rod of a width less than the gap between a window glass pane and a facing inner edge of a window sill for an automobile door interior panel. A shield plate is fixed to and extends radially outward to one side of the rod at a distal end, and a wedge is fixed to and extends alongside the rod adjacent the proximate end, with the wedge having a thickness greater than the width of the gap and tapering over its length to a tapered leading edge facing the trailing edge of the shield plate. By inserting the shield plate into the interior of the door within the gap and twisting the rod about the axis, the wedge is forced into frictional locking position between the inside of the window glass pane and the window sill, with the shield plate covering the door mechanism actuating lever.

Abstract: Disclosed is a security astragal that is secure against unauthorized removal but can be easily removed when authorized so that the door can be subsequently reused without the astragal. The disclosed security astragal includes a security bar that protects against tampering with the door latching mechanism and a protective sheath that secures the security bar from unauthorized removal.

Abstract: A gun lockbox resistant to forced entry includes a guard member formed to an inside edge of a housing half, and one or more locks in an opposing housing half which engage the guard member, for securing the housing halves together and preventing insertion of a prying tool therebetween. The gun lockbox may additionally include clip members to attach the lockbox to a stationary object within a transport vehicle or to a wall, the clip members preferably consisting of complementary brackets with the attachment hardware being located inside the lockbox, to prevent easy theft of the lockbox outright. The gun lockbox or case may further be configured to facilitate aligning and positioning to the stationary object, through raised portions on the exterior surface of one of the housings. Also, the gun lockbox may be constructed from a conventional case.

Abstract: A device for reinforcing a doorjamb is provided. The device includes a rigid plate member having a flange formed along one side thereof and a bolt receiving opening formed proximate an opposite side thereof. The plate member is mounted to an interior side of the doorjamb with the bolt receiving opening substantially aligned with the bolt receiving hole of the doorjamb and the flange extending over a portion of an outer edge of the doorjamb in face to face contact with the outer edge of the doorjamb.

Abstract: An alarm-triggering locking mechanism for the lock and/or hinge area of a door to be secured or a window to be secured is proposed, which is embodied as a locking plate (23) which can be attached to a door or window frame by means of holding screws (27) embodied as the first blocking device. A second blocking device, which is harder to overcome by the effect of force, is embodied as at least one striker element (25) rigidly connected with the locking plate (23) and which, following the limited movement of the locking plate (23) in the opening direction, comes to rest against a counter-striker element (26) anchored on the door or window frame. An alarm, in particular a silent alarm, is triggered via radio or the telephone net after the first blocking device has been overcome. The burglar is thereafter delayed by the second blocking device, which makes it possible for security forces to reach the location of the break-in and to arrest the burglar while the break-in is still in progress.

Abstract: A vehicle door latch device comprises a synthetic resin latch body which has a recess at a front side thereof for receiving a latch and a ratchet, and a substantially horizontal bulged portion at a rear side thereof for receiving the striker when the door is closed. The latch device further comprises a door opening mechanism for releasing engagement between the latch and the so as to open the door and a locking mechanism displaceable between a locked condition and an unlocked condition. The door opening mechanism and the locking mechanism are located underneath the bulged portion. A protecting plate is attached to the rear side of the latch body for substantially covering the door opening mechanism. The protecting plate has an upper side edge which is adjacent to a lower surface of the bulged portion.

Abstract: The security device is suitable for use with any conventional dead bolt lock mounted on a door. It comprises a plate shaped to extend flat on the outer lateral surface of the doorframe. A security lever is mounted on the security device and is pivotable about a vertical axis adjacent to the plate. The security lever includes an inner arm extending on one side of the plate in the cavity of the doorframe in a position such that the dead bolt, in a lock position, abuts on the inner arm and causes the lever to pivot around its axis. The lever further includes an outer arm extending on another side of the plate shaped and sized to extend on the door behind the dead bolt, when the dead bolt has been brought to a lock position and has caused the lever to pivot around its axis. With a security device according to the present invention, the locking of the dead bolt lock is performed in only one step by simply engaging the door lock, thereby engaging the security device simultaneously.

Abstract: Disclosed is a security astragal that is secure against unauthorized removal but can be easily removed when authorized so that the door can be subsequently reused without the astragal. The disclosed security astragal includes a security bar that protects against tampering with the door latching mechanism and a protective sheath that secures the security bar from unauthorized removal.

Abstract: Unlocking of a vehicle door by insertion of implements other than the door key into the door is prevented by a guard housing within the door into which the key turnable inner end of the lock cylinder extends and which also encloses an otherwise vulnerable portion of the linkage which interconnects the lock cylinder and the door latching means. In a preferred form of the invention, the housing has an extension which extends below the lock cylinder and which is angled to extend to the outer shell of the door and then downward along the inner surface of the shell and which extends between the shell and the side impact beam of the door. The guard may secured in place by the same bolt that secures the handle assembly to the door and is wholly within and concealed by the door.

Abstract: A security reinforcement device for a doorjamb with a striker plate on an inner face of the doorjamb comprising an elongated flat reinforcing bar having a recessed area on one side edge thereof. A facility is for mounting the elongated flat reinforcing bar onto a rear surface of the doorjamb, with the recessed area located at a forward bent portion of the striker plate, so as to prevent a break-in of a door caused by a sudden force applied to the door by an intruder.

Abstract: A retaining means for a door having a body, a resilient means, a locking means and a controlling means is able to prevent people from opening a door with sharp tools when the door is closed. The locking means is able to limit a latch of the door when the locking means projects out from the body due to the resilience of the resilient means. Pulling the controlling means will then urge the locking means toward the body and into a receiving cavity, such that the door will be easily opened after retrieving the latch into the door.

Abstract: The present invention relates to a system for reinforcing door frames and doors, and in particular to a unit including twin plates which are joined one to the other transversely through the door and which are positioned on the outside and on the inside of the door to reinforce the same at the level of the handle, the latch and the dead bolt. An inner plate is also proposed which is hidden in the door frame to reinforce the same at the level of the dead bolt.

Abstract: An improved secure latch for a fixture having a door with a double-wall structure, including an endwall with an exit port and an inner sidewall with a slot near the endwall and parallel thereto. An entry port of a facing member and an orifice of a tongue, slidably receivable through the slot, of a latch attached to the facing member are aligned with the exit port as the door is in a closed configuration such that a bolt of a lock installed in the door is slidable therethrough as the bolt is displaced between a locked configuration and an unlocked configuration. The secure latch is adapted to retain the door in a closed configuration as the bolt is in a locked configuration even though the facing member may be forced clear of the bolt. Further, the secure latch prevents the lock from being sprung open without inflicting severe and visible damage to the door and/or the facing member. A modified embodiment provides the endwall without the exit port and the facing member without the entry port.

Abstract: The kick resistant door assembly comprises a doorway framed by at least two door jamb segments, a door mounted by hinges to one of the segments and a specialized plate assembly which mounts to both a door jamb segment and to adjacent framing studs. The plate assembly has an opening for receiving a bolt and an extended portion for reinforcing the latch of the door against forcible entry. The assembly may further comprise reinforcing rods attached either directly to the hinges or to an intermediate reinforcing hinge plate. In either configuration, upon installation the reinforcing rods extend into the door as well as through the door jamb segment into the wall studs. The assembly may yet further comprise the use of additional plate assemblies mounted adjacent the hinges of the door with the openings of these additional plate assemblies aligned for receiving the reinforcing rods of the hinges.

Abstract: A wooden panel door reinforced against attempted break-in contains layers of fiberglass mat and decorative wooden facing strip bonded to the doorjamb and stiles. The stiles and doorjamb are constructed from wood with grain that runs primarily in a single direction, and reinforcing these stiles and doorjambs against impact can be achieved by bonding to them a fiberglass mat, which contains fibers running in transverse directions. The fiberglass mat is in turn covered by a decorative wooden facing strip layer.

Abstract: This security system will prevent the door casing from failing upon a forced entry attempt into a home by forming a rigid connection from the door casing with said security system to the wall interior structure. It will enable the wall interior structure to become the strength of the door and not the door casing.

Abstract: A security device for securing a hinged door against forcible opening is disclosed. The apparatus includes an interior plate portion secured to an inner side of the door frame. The interior plate portion defines a first edge disposable in a gap between a latch edge of the door and a latch receiving portion of the door frame. When installed in a door apparatus, the security device prevents the door from being forcibly opened even if the latch receiving portion of the door frame is damaged or the door is bowed or bent inward. An alternative embodiment of the security device includes a latch plate reinforcing portion and a clamping portion in addition to the interior plate portion. A kit is disclosed that includes the interior plate portion and screws for attaching the interior plate portion to the door frame and for reinforcing the door hinge.

Abstract: A latch guard for protecting a door latch installed in a door comprises a removable cover plate with a cylinder pivot hole and two mounting holes located generally above and below the cylinder pivot hole. Adjacent to each mounting hole are two slots that extend from the mounting hole. When installed, the cover plate extends over the space between the door and an adjacent door frame in the area of the latch to protect the latch. The cover plate is mounted to the door by first and second mounting bolts that extend through the slots in the cover plate and completely through the door. Each mounting bolt includes a spacer that spaces the enlarged head of the respective mounting bolt so that the cover plate can rotate about the cylinder pivot hole to allow easy installation and removal of the cover plate. The cover plate may also include anti-spread pins.

Abstract: A door frame reinforcing plate used for reinforcing a door frame adjacent a lock striker. The reinforcing plate is comprised of a flat plate section adapted to be secured over an interior flat surface of the frame adjacent the lock striker. The flat plate section has a lock bolt opening therein adjacent a first end of the plate section where the plate is bent at right angle to form a flange to overlie an edge surface portion of the door frame. A plurality of holes are provided in the plate above and below the opening for receiving connecting screws which secure the lock striker. A further series of holes is provided in the plate section to receive fasteners which are secured to the frame from an exterior surface of the frame. The reinforcing plate is not visible from outside the door frame, as it is concealed behind the door frame and behind the usual frame moldings.

Abstract: A strike plate assembly which includes a rigid unitary strike adapted for use with a door jamb having an inner bolt receiving face and a door stop portion. The strike includes a bolt receiving face plate, a door stop plate, and a offset plate joining the bolt receiving face plate and the door stop plate. A plurality of anchor cylinders or pins extend from both the bolt receiving face plate and the door stop plate. The strike plate is secured to both the bolt receiving face and the door stop portion of the door jamb. The anchor pins extend through the door jamb and into the door support structure behind the door jamb.

Abstract: An improved anti-theft device for use with a vehicle door locking mechanism, the latter having a sill knob rod rotatably connected to a locking lever so that actuating the sill knob rod moves the locking lever to either lock or unlock the locking device, includes a housing to cover and protect the locking mechanism. The tube is joined to the housing and surrounds the sill knob rod engaged to the locking lever. The periphery of the sill knob rod is spaced away from the inner wall of the tube over the full length of the sill knob rod enclosed within the tube.

Abstract: A door security system that includes an interior component system, an exterior component system, a hinge screw component, and a door striker component. The interior system consists of a pair of plates, one mounted on the door and the other mounted on the door jamb. Each plate includes a flanged portion having a pair of apertures. A bolt consisting of a rod and a hook is inserted through one aperture of each plate to secure the door to the door assembly. A chain and hook system is connected between the other two apertures of the respective plates. When only the chain is used, the door can be safely opened partially to preview the prospective visitor. The exterior component consists of a flanged plates wherein a flanged portion is designed to fit into a corresponding slot in the door jamb to inhibit forceful entry into the dwelling. The hinge screw components includes a screw having a threaded portion and a protrusion member.

Abstract: A door latch guard for guarding the latch of an outwardly opening door and for preventing spreading of the door away from an adjacent door frame comprises a cover plate having a first flat portion for connection to the door and a second flat portion adapted to overlie the adjacent door frame. A third portion of the cover plate, between the first and second flat portions, defines a groove adapted to overlie the door and the door frame and to receive a protruding latch strike plate. The groove includes a flat outer portion having a width adapted to accommodate locks installed in the door at a plurality of different backsets. In addition, the cover plate has a cut-out adapted to allow the cover plate to be mounted flat against the door, without interfering with the door lock hardware, yet still receive the protruding latch strike plate, regardless of the backset at which the door locks are installed.