Abstract: A security knob assembly for a panel including a pet door, mounted on the panel remotely from the pet door, the security knob assembly including a latch movable between lock and unlock positions, the latch being operated by rotation of a knob after the knob is pushed in axially from a disengaged to an engaged position. The knob has an array of pins that engage an array of holes when the knob is pushed in to operate the latch. The latch may also be operated by a key cylinder, and the mechanism provides a plug to plug up the opening to the mechanism when a key cylinder is absent.

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 lock assembly includes a retaining block having a substantially rectangular recess with a shoulder defining a transition between a wider outer portion and a narrow or inner portion. A door knob shaft having a rectangular cross-section extends through the inner portion of the recess in the retaining block for extending and retracting a striker. A substantially rectangular locking bar engageable with the recess has a shape which corresponds with the recess. The locking bar has a slot at one end for engaging and capturing the door knob shaft to prevent its rotation. When the orientation of the locking bar is reversed, the locking bar rests on the shoulder of the recess and does not engage the door knob shaft.

Abstract: A portable deadbolt lock security device is configured to prevent the handle of the deadbolt lock from being turned. The device includes a flexible strap having a first end, a second end, and a medial portion. An opening is located in the first end of the strap. A fastener is provided for mutually engaging the second end of the strap with the medial portion. In use, the handle of the deadbolt lock is turned to its locked position and inserted into the opening in the first end of the strap. Subsequently, the second end of the strap is encircled about the stem of a doorknob, pulled taut, and brought into mutual engagement with the medial portion of the strap.

Abstract: A security lock (10) including an arm (14) and a mounting member (12) is provided for use with a dead bolt lock assembly having a lock actuator on a first side (34) of a door (32) and a turn piece (36) on a second side (38) of the door (32). When the security lock (10) is in an engaged position (42), abutting surfaces (22a, 22b) of the arm (14) are positioned immediately adjacent the turn piece (36) to abut and restrict rotation of the turn piece (36).

Abstract: A motorized electronic lock is disclosed including an electric motor, a screw powered by the motor, a nut threadedly engaged with the screw and having two extending arms projecting therefrom, one of which arms is a cam follower arm that rides along a cam surface on a cam bracket, and the other of which is a locking arm that is engageable with a slot in a bolt in order to provide a dead-bolting feature for the bolt, and a relocking spring which is either held out of the way of the bolt by a downwardly extending leg of the cam bracket or is biased to a position behind the bolt, blocking the bolt from being able to retract.

Abstract: A dead bolt operating knob is immobilized by dual sleeves mounted on a rod-like support and biased toward each other to surround opposing portions of the dead bolt operating knob. The end of the elongated support opposite the sleeve members is secured in a dead bolt door locked position by a flexible member extending between the end of the support opposite the sleeve members and the shaft of a doorknob assembly.

Abstract: Enclosure sign device for unavoidable viewing of a sign before manipulation f an entryway opening device. An enclosure of an entryway opening device includes at least one side surface extending out at least as far as the entryway opening device, a back surface coupled to the side surface to accommodate the entryway opening device through the back surface, and a front surface releasably coupled to the side surface which can be releasably opened or closed over the entryway opening device. The enclosure is coupled to a surrounding surface of the entryway opening device and includes a display for releasably holding a sign attached to the outside surface of the front surface so that sign viewable when the front surface is closed. Access is obtained to an entryway opening device by releasably opening the latching so that there is unavoidable viewing of a sign before manipulation of the entryway opening device.

Abstract: An arrangement is disclosed involving a locking bar, which arrangement is to be used for locking doors, containers and the like. The arrangement includes a locking bar which is layered at one end or to the base with its other free end involving a locking shackle holder with a shackle which is insertable in a cooperating locking device, which includes of a casted or smithed strong housing member in one piece without other openings except for a key hole and an opening for receiving the locking shackle and an exchangeable lock for fastening of the locking shackle.

Abstract: A spare tire access hole lock for preventing the theft of spare tires on vehicles equipped with undercarriage mounted spare tires. The spare tire access hole lock is particularly suited for use on trucks that are equipped with an access hole in the bumper for facilitating the insertion of a tool necessary to release the spare tire from stowage. The spare tire access hole lock prevents entrance of a tool to release the spare tire from stowage by obstructing access to the spare tire release mechanism through the spare tire access hole. The spare tire access hole lock may be used by inserting it through the spare tire access hole and securing it with a standard padlock to prevent its removal.

Abstract: An openable rotatable shell which is positioned on and encloses a conventional key lock door knob. The shell freely rotates and prevents exerting a turning force on the knob. Since the keyhole on the knob is covered by such shell, the door cannot be opened until a second lock provided on the shell is opened allowing the shell to be removed from the knob.

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: An improved gladhand security lock apparatus is locked to a gladhand brake line coupler to immobilize a trailer. The body of the security lock apparatus is formed with an abutment surface from which depends a clevis wall and a retainer turned back from the clevis wall and spaced from the abutment surface forming a tongue receiving bight. A guard plate is formed on an end of the body and a clip with an upturned rail member is formed parallel to the guard plate and spaced therefrom. The security lock apparatus is attached to the gladhand coupler so that a tongue of the gladhand is received in the tongue receiving bight, the abutment surface of the security lock apparatus overlies a port of the gladhand coupler, and a retainer flange formed on the gladhand coupler is received between the guard plate and the clip. The security lock apparatus body comprises a barrel. A lock housing is formed in a bore in the barrel perpendicular to and confronting a keeper bolt positioned in a keeper bolt receiving bore.

Abstract: A padlock with a built-in anti-theft alarm device that is comprised of a padlock mechanism consisting of a lock structure having a rotational locking pintle bar that is revolved a certain angle to achieve locking and unlocking, a cam suitably positioned at the center of the pintle bar, an electric switch that is actuated by the cam pushing against a switching device, an alarm circuit with an independent power supply and a vibration sensor device. The rotation of the pintle bar revolves the cam such that the lobe pushes against and closes the electric switch, which initiates the operation of the alarm circuit. The vibration sensor device triggers the alarm circuit to emit an alarm sound whenever abnormal vibration is detected. The alarm circuit has an independent power supply that is securely protected by the outer padlock case to prevent damage and power loss.

Abstract: A motorcycle lock is provided which includes a lock body consisting of a metal casing and a lock unit fitted into the metal casing. The lock unit includes two locking plates at the top and a lock cylinder at the bottom, and a shackle having two annular grooves around two opposite ends thereof and respectively inserted into a respective hole on the metal casing and locked by the locking plates. Turning the lock cylinder in one direction causes the locking plates to move in the reverse directions for permitting the shackle to be removed from the lock body. Turning the lock cylinder in the reverse direction causes the stop blocks of the left and right locking plates to engage the annular groove on opposing ends of the shackle for holding down the shackle.

Abstract: Pass key entry of a space closed by a dead bolt equipped lock door is prohibited by a dead bolt operating knob enclosing housing pivotally mounted to the inside surface of the door adjacent the dead bolt operating knob. The dead bolt knob enclosing housing is moved to door locked position or unlocked position by the occupant of the space.

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 structure is provided to prevent access to the latch pin of a dead bolt or latch lock. For dead bolts, a sleeve is provided which is received over the bolt frame in which the latch pin reciprocates. The sleeve is secured to the frame in such a manner that the latch pin cannot be accessed without removing the sleeve. For latch locks, a sleeve is provided with an extending tongue, which tongue covers the ears of the latch pin and denies access to the ears.

Abstract: A door security system is used in conjunction with a lock such as a deadbolt lock having an "inside" located actuating handle, of the type used in hotel rooms, having a major and a minor dimensional axis. The security device has a baseplate that fits beneath the faceplate of the lock and which can be oriented during installation in relation to the shaped actuating handle of the lock. The baseplate of the security device extends eccentrically off center and supports a pivot post that carries a latch locking plate. The locking plate is pivotally supported on the pivot post, for pivotal rotation thereabout, and has an arcuate passage off-set from the pivot post, in use to receive the lock actuating handle. In use, with the baseplate installed beneath the faceplate of the lock and the lock handle rotated to extend the bolt, the locking plate may be rotated about the pivot post, swinging the arcuate passage over the lock handle in immobilizing relation therewith.

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 door handle assembly having a snap-in attachment apparatus for assembling a key cylinder to a door handle assembly without the use of separate fasteners and retainers. The door handle assembly has a bored tubular extension that utilizes slots to define tubular sections that yield radially outward upon inserting the key cylinder into the bore of the tubular extension. The tubular sections have openings that receive lugs extending from the periphery of the key cylinder and that prohibit inward axial movement and rotary movement of the key cylinder. A shoulder in the door handle assembly abuts an end of the key cylinder to prohibit outward axial movement of the key cylinder. The engaging surfaces of the lugs and tubular sections have drafted angles that pull the tubular sections radially inward toward the key cylinder upon a push-in force applied to the key cylinder from outside the vehicle and directed toward the center of the vehicle.

Abstract: In accordance with illustrative embodiments of the present invention, a door lock for a rear door of a van includes a T-shaped member having a leg that is received in the opening between the door hinges, and arms that extend outward from the leg over a portion of the door and the body, respectively. The leg is padlocked against removal from the opening.

Abstract: The present application relates to a protecting sleeve for shielding and reinforcing a bicycle lock mechanism, which sleeve can conveniently be applied to many existing bicycle locks. The sleeve comprises an elongate body having a central bore sized to receive a cylindrical portion of a lock in which the lock mechanism is located. It has been found that this area of the lock is the weakest and the lock can be defeated by breaking the locking mechanism. The protecting sleeve includes intermediate its length a channel passage through which a locking member can pass for releasably engaging the locking mechanism. The protecting sleeve is preferably made of a high strength material, such as an aircraft aluminum alloy material which also acts as a thermal moderator.

Abstract: A pin tumbler lock barrel assembly is capable of preventing the lock from being operated by the use of a skeleton key or any other tool inserted into the key slot. The lock is comprised of an improved hollow lock casing having a key plug located therein and a specially designed sleeve that surrounds the lock casing that is relatively rotatable with respect thereto. The sleeve is comprised of two halves that are interconnected by spring-loaded fasteners. A crescent-shaped slot is provided on the key plug and is aligned with two radial through bores formed in the lock casing and one of the sleeve halves. An alarm system includes a switch assembly on the periphery of the sleeve which is aligned with the radial bore. A specially designed sliding element with a cam-shaped end surface cooperates with the lock casing allowing only the correct key to operate the lock mechanism.

Abstract: A multi-controlled security lock includes a slide which can be moved back and forth with respect to frame by at least one of two control devices, such as, a key control device or a remote electric control device. A carriage mounted on lock bolts is movable back and forth with respect to the frame. An irreversible actuating device is located between the carriage and the slide for permitting a movement of the carriage between an open position and a locked position in response to a movement of the slide and for preventing a movement of the carriage between the locked position and the open position in response to a force exerted on the carriage.

Abstract: A security device to be usable with a dead bolt lock to prevent the lock from being opened from the outer side of an associated door. The security device includes a body member having a space for receiving a dead bolt lock handle and a slidable retainer for locking the handle to the body member with a pin. The pin is attached to one end of a flexible connector with the other end being affixed to an attachment plate mounted on the door. The flexible connector and attachment plate prevent the body member and handle from rotating due to unauthorized turning of the dead bolt.

Abstract: An inside lock for the latch of a camper shell or other similar structure has a housing which is fixed on the inside of a door with a bore surrounding an actuating rod extending from a lockable handle on the outside and rotatable therewith. The actuating rod, for example of square section, normally carries an actuating member which releases latch members at the periphery of the door on rotation of the handle. A removable member, for example a pin bent into a U-shape, is inserted in a transverse hole or holes in the housing, with a part of the pin abutting a surface or surfaces on the rod, preventing rotation thereof. This provides for locking the handle from rotation on the inside, even though the handle lock is released.

Abstract: The dead bolt lock assembly includes a lock cylinder mounted by the door and extending into the room interior and having a lock handle with a cross bar portion. A security device has an end portion having a longitudinal notch opening through the terminal transverse edge thereof to proved to longitidinally extending legs. The legs have opposite longitudinal surfaces that converge in a direction toward the terminal edge, the surface of the legs most closely adjacent the lock cylinder when in use having transverse ribs extending away therefrom. The legs are extendable between the cross bar and the lock cylinder housing until the legs are in binding engagement therewith prevent the lock handle from rotating and thus prevent one from unlocking the door outside of the room using the right key for unlocking the door. The above mentioned surfaces are planar.

Abstract: A locking device for the knob of a reciprocating dead bolt latch for a door having a head portion and downwardly extending spaced apart leg members. The head portion has an aperture adapted to engage the dead bolt latch knob in locking fashion. The leg members define a slot which engages the door knob shank or the door handle.

Abstract: Anti-rotation lock apparatus prevents the rotation of a deadbolt key or handle by holding the key or handle from the inside of a door. The apparatus includes a base element which fits over the key or lock handle and an extension which extends from the base element and which is braced against the doorknob or doorknob assembly to prevent rotation of the base element and of the key or handle on which the base element is disposed.

Abstract: The present invention relates to an improved security device. The improved security device includes a U-shaped member which is designed to engage the shaft of a doorknob. Attached to the U-shaped member is a locking plate which has openings therein to receive either the latch of a deadbolt or the key head of a key inserted into a deadbolt. The improved security device, when in place, prevents entry into a dwelling by a person unlocking a deadbolt by preventing the rotation of a deadbolt latch or a key head inserted into the deadbolt.

Abstract: A repositionable latch blocking apparatus for use with a latchable mechanism, the latchable mechanism having an operating device to operate the latchable mechanism between locked and unlocked positions, the latch blocking apparatus comprising at least a first surface, the latch blocking apparatus having a fastening device disposed thereupon to fasten the latch blocking apparatus proximate the operating device of the latchable mechanism, so as to position the at least first surface to block the operation of the operating device and thereby prevent the operation of the latchable mechanism between locked and unlocked positions, whereby when the latch blocking apparatus is repositioned, so as to position the at least first surface remote the operating device said repositioning allowing the operation of the latchable mechanism.

Abstract: An apparatus for preventing the unlocking of a deadbolt lock with a key in which clamping arms are used to grip a deadbolt knob or key on the opposite side of the door and are held in place by a retaining pin which is inserted into a cavity in the door. The use of various clamping materials and types provides a degree of versatility to the apparatus.

Abstract: A car theft proofing system includes a sensor disposed in a cylinder lock for detecting insertion into the cylinder lock of a door key or other article, an alarm device for giving an alarm, an alarm drive device for driving the alarm device, a control unit for causing the alarm device to give the alarm in response to signals received from the sensor and the alarm drive device, and a radio transmitter for transmitting a radio wave upon insertion of the article. The alarm drive device includes a portable remote control transmitter and a receiver disposed on a car body. The remote control transmitter includes an abnormality alarm for transmitting a theft signal in response to the radio wave transmitted from the radio transmitter.

Abstract: A car theft proofing system includes a sensor attached to a door lock mechanism for detecting insertion into the door lock mechanism of a door key or other article, an alarm device for giving an alarm, an alarm drive device for driving the alarm device, a control unit for causing the alarm device to give the alarm in response to signals received from the sensor and the alarm drive device, and a radio transmitter for transmitting a radio wave upon insertion of the article. The alarm drive device includes a portable remote control transmitter and a receiver disposed on a car body. The remote control transmitter includes an abnormally alarm for transmitting a theft signal in response to the radio wave transmitted from the radio transmitter.

Abstract: A car theft proofing system includes a sensor a sensor disposed adjacent a cylinder lock for detecting insertion into the cylinder lock of a door key or other article, an alarm device for giving an alarm, an alarm drive device for driving the alarm device, a control unit for causing the alarm device to give the alarm in response to signals received from the sensor and the alarm drive device, and a radio transmitter for transmitting a radio wave upon insertion of the article. The alarm drive device includes a portable remote control transmitter and a receiver disposed on a car body. The remote control transmitter includes an abnormality alarm for transmitting a theft signal in response to the radio wave transmitted from the radio transmitter.

Abstract: A car theft proofing system includes a sensor attached to or mounted adjacent a cylinder door lock for detecting insertion into the door lock of a door key or other article, an alarm device for giving an alarm, an alarm drive device for driving the alarm device, and a control unit for causing the alarm device to give the alarm in response to signals received from the sensor and the alarm drive device.

Abstract: A car theft proofing system includes a sensor attached to or mounted adjacent a cylinder door lock for detecting insertion into the door lock of a door key or other article, an alarm device for giving an alarm, an alarm drive device for driving the alarm device, a control unit for causing the alarm device to give the alarm in response to signals received from the sensor and the alarm drive device, and a radio transmitter for transmitting a radio wave upon insertion of the article. The alarm drive device includes a portable remote control transmitter and a receiver disposed on a car body. The remote control transmitter includes an abnormality alarm for transmitting a theft signal in response to the radio wave transmitted from the radio transmitter.

Abstract: The invention relates to a cylinder lock with a cylinder housing (1) and, rotatably mounted therein, a cylinder plug (2) comprising a key passage extending in its axial direction, with a lock bit (5) coupled to the cylinder plug and rotatably mounted in the cylinder housing (1), there being provided in the cylinder housing and in the cylinder plug a plurality of mutually aligned bores which extend into the passage and in which there are, by a spring force in the direction of the passage, plug pins which are of different lengths and housing pins which are preferably of the same length, there being formed between the cylinder housing and the cylinder plug a first separating joint traversed by the housing pins when the key is not inserted into the lock, the ends of the plug pins so co-operating with the locking notches of the key that when the key is inserted the pins are displaced in their axial direction into a position in which the bearing ends of all plug and housing pins are located in the first separating

Abstract: A security container comprises two halves which can be slid together longitudinally to close the container and locked in the longitudinally closed position. Each half comprises a channel member and an associated end cap which is of a size to cover the whole of the end of the container. Edges of the side panels of each channel member include u-shape formations to that the two halves interlock for a longitudinal movement. A money compartment is defined in the bottom of the rear half by a transverse plate parallel to the lower end cap. A drawer is mounted in the compartment and can be locked by rotating a threaded rod into engagement with a nut welded on the rear face of the rear channel member. A locking mechanism for the above container includes a protective cover including two plates covering the front face of the lock barrel with four balls between the plates allowing a key to pan between the balls into the lock but resisting a punch force to the front of the lock.

Abstract: The lock security device described herein is designed to prevent the turning of the lock from the opposite side of the lock, for example, by the turning of a key from the outside or opposite side of the lock. With most dead bolt door locks there is a knob on the inner side of the door by which the bolt of the lock may be moved forward into a locking position or retracted into an unlocking position. These same actions may be performed by a key inserted into the lock from the outside of the door. The security device is a simple knob on the inner side of the door with a flap which may be turned to press against the inside knob which controls the position of the bolt of the lock. When the bolt is in locked position, this flap is turned toward the bolt controlling knob and engages it to prevent turning of the same into an unlocking position. This flap is prevented from slipping to or from this engaging position by a spring on the inside of the flap knob which exerts pressure against the turning of this flap.

Abstract: A door lock has an open lever linked with an open rod and pivotally mounted on a base plate and a locking lever linked with a locking link and pivotally mounted on a sub plate, the open lever and the locking lever being linked with each other through a locking rod so that a door is selectively locked and unlocked by the pivotal motion of the open lever which is caused by the pivotal motion of the locking lever. The door lock further has a protective wall in the shape of an upright wall which is formed integral with the side surface of the open lever which faces the locking lever. Since the protective wall which is formed integral with the open lever functions as a protective means, it is possible to reduce the number of parts and the number of man-hours needed for the assembling operation and further use the door lock in common to all types of vehicle.

Abstract: A cover for the various locks that are often placed a few inches above the door-knob is provided. The cover is an elongated plate spaced from the door and having sidewalls extending almost to the door. The cover has a downwardly extending portion that surrounds the shaft of the door-knob and has a hole through the shaft of the door-knob and has a hole through which the door-knob passes when the cover is rotated on its hinges to an open position. A jamming device has an indent for receiving the key or handle of one of the locks on the door. The jamming device bears against the shaft of the door-knob and prevents the key or handle of the lock from turning. Hence, the lock remains locked when the jamming device is used.

Abstract: A repositionable latch blocking apparatus for use with a latchable mechanism, the latchable mechanism having an operating device to operate the latchable mechanism between locked and unlocked positions, the latch blocking apparatus including a unitary configuration having at least a first surface, the unitary configuration having a fastening device disposed thereupon adjacent the operating device in use, to fasten the latch blocking apparatus proximate the operating device of the latchable mechanism, so as to position the at least first surface to block the operation of the operating device and thereby prevent the operation of the latchable mechanism between locked and unlocked positions, whereby when the latch blocking apparatus is repositioned, so as to position the at least first surface remote the operating device said repositioning allows operation of the latching mechanism.

Abstract: A strengthening device for use with a deadbolt lock and includes a planar metal anchor plate having a hole with an anchor pocket welded to the plate at the hole. The anchor plate is installed between the door jamb and the framing or door stud. The anchor pocket extends into the hole in the door jamb through which the deadbolt is insertible. When the deadbolt is installed in the door, the bolt will extend into the anchor plate. In another embodiment, a metal bolt guide is inserted from the outer side of the door jamb into the anchor pocket.

Abstract: In a burglarproof system for an automotive vehicle, a door key cylinder arranged at a vehicle door includes a cylindrical body and a rotor accommodated therein. An acting section provided at the rotor extends radially from an axis thereof. A door key switch arranged in the vicinity of the door key cylinder detects the acting section to output a key-operation detection signal, when the rotor is angularly moved by turning operation of a key to bring a door locking mechanism to an unlocked position. A door lock switch detects in which one of the locked and unlocked positions the locking mechanism is. A stealing detector is provided for outputting a stealing detection signal when the stealing detector does not receive the key-operation detection signal from the door key switch, but receives the lock-releasing detection signal from the door lock switch. A burglarproof unit executes operation for a burglarproof in response to the stealing detection signal.

Abstract: There is disclosed an improved handle assembly which relates to a pop-out T-handle lock assembly of the type having a cylinder front handle which mates with a cylinder housing, which in turn houses a cylinder lock and related extension rod therein.The improved handle assembly is formed by providing an inner handle secured to the cylinder housing at the front end thereof, the inner handle having a pair of opposed attachment flanges extending outwardly therefrom. Each of the attachment flanges includes a screw receiving channel formed along the inner surface thereof, and the cylinder front handle is provided with a pair of opposed threaded apertures in spaced apart relation traversing side walls thereof and positioned to be in registry with the screw channels formed in the inner handle when the cylinder front handle is mounted to the inner handle.

Abstract: Locking apparatus for bottom connected electrical meters which, in one embodiment, includes a secondary cover over the meter terminal block and intermediate the primary cover and the meter base, the secondary cover being secured to the base by screws which are covered by the primary cover. The secondary cover has an apertured stud thereon which extends through the primary cover and receives a lock to prevent removal of the primary cover. The protruding end of the stud may be covered by an apertured block secured to the primary cover. In a second embodiment, the stud is omitted, and the lock extends through the primary cover and into an opening in the meter base, the lock having a portion which engages the primary cover and prevents removal thereof. In the second embodiment, a detector, such as a switch, within the base and operable by the lock indicates the presence or absence of the lock.

Abstract: A tamper-resistant, reciprocating cylinder lock comprising a bolt and a bolt keeper having the capacity to prevent dislodgement of the bolt from engagement in its locked position with the keeper when the lock and keeper mechanism are under physical attack.

Abstract: There is disclosed an improved locking assembly mounted on a door assembly f a SOC and including a plurality of segmented linear bolts peripherally-disposed about the door assembly for engaging cooperating latches mounted on the container body and operatively connected to handle assemblies for latching and unlatching the locking assembly to permit opening and closing of the door assembly of a SOC and wherein each handle assembly is provided with a key operated combination lock.