Abstract: An anti-theft bolt guard is shown having a cylindrical body (65) for placing over a nut (60) of an installed bolt (30). Third washer (45) engages bolt (30) and the body (65) is affixed to the bolt (30) with a threaded circular guard nut (85). The guard nut (85) is tightened with a special key (120). A fourth washer (46) engages the guard nut (85) and an adhesive (57) material may be inserted. The guard nut (85) is then sealed off with the insertion of a press fit seal cover (95) thus providing a device that prevents easy access to the nut (60) and removal of the bolt (30).Protection for the exposed head (32) of a bolt can be obtained by inserting the bolt (30) through a head guard (35) where a press fit head cover (25) is inserted in the first end (36). An adhesive (57) can be inserted to increase the difficulty of removal of the protection device.

Abstract: A locking device prevents a rod for closing a door of a container or truck from being rotated in an unlocking direction so as to keep the container doors locked, even if a control handle of the rod should be cut. The rod has is provided near the surface of the door so as to be rotatable about its axis into and out of engagement with door closing members fixed on the container body. The locking device has a first locking member mounted on the control handle at a base portion thereof, a second locking member mounted at a position opposite to the first locking member across the control handle, and a fixing member for inseparably fixing the second locking member to the first locking member. The second locking member prevents the rotation of the rod in the unlocking direction by abutting the surface of the door when the second locking member and the first locking member are inseparably coupled together around the control handle.

Abstract: A lockable container is disclosed in combination with a U-shaped bicycle lock. The lock has a rigid U-shaped portion in which the open end is spanned by a rigid locking bar. The container comprises a body and a cap, both with channels thereon, which receive the parallel arms of the U-shaped portion and the locking bar therein. When the lock is locked, the cap cannot be removed from the container, so articles left therein are safe. A space between the bight of the U-shaped portion and the bottom of the container can be used to securely attach the combination to a suitably shaped permanent fixture.

Abstract: A protecting seal for the doors of containers and trailers that include a rotating rod to which a locking bar pivoting housing is rigidly mounted and a locking bar that is pivotally mounted within the pivoting housing which includes a pin pivotally supporting the locking bar. The protecting seal has locking assemblies mounted to flap members extending from the longitudinal edges of a jacket member. The flap members and the jacket member embrace the rotating rod. An adhesive is used on the internal walls and surfaces to further secure the protecting seal to the rod and pivoting housing. This results in the protection of the pivoting pin mounted to the pivoting housing.

Abstract: A lock mechanism including a lock member which is normally held in an engaged position to be magnetically operated from said engaged position to a disengaged position, said lock member comprising a spring blade and an engagement member projecting therefrom transversely to the flat side of the spring blade at one end thereof, the spring blade being fixedly secured at the other end thereof, and a safety device for CD boxes having such a lock mechanism.

Abstract: A tamper indicating device for use on any container or enclosure has a security strap or other elongate connecting member for securing to between one part of a container or other item and a movable closure for the item, and a base unit for releasably trapping at least one end of the strap so that the container or item cannot be opened without first releasing the strap. The base unit has a recess for releasably retaining the strap end, and an access opening to the recess across which a tamper indicating label can be applied to the base unit. The only access to the recess to release the strap end is via the access opening, and once the label is applied the strap end can only be released by first tearing off or removing the label.

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 locking device is provided for a removable tailgate on a pickup truck which permits normal rotational use of the tailgate while the lock is installed. The device is comprised of two basic parts, a lock and a lockable clamp. The clamp is used to close the open portion of the receiving cup through which the shaft is passed when the tailgate is normally removed. The clamp consists of a "b" shaped clamp with bent apertured tabs at each end. The lock mechanism includes a short linear plunger shaft with a head on the end of the shaft outboard of the lock. The diameter of the head is larger than the apertures in the end tabs of the clamp, so that the clamp is held secure.

Abstract: A tamper-evident, self-locking cover for mechanical and electrical connections includes a unitary, molded plastic member including two generally semi-cylindrical pockets connected by a first living hinge and including snap-fit, self-locking, tamper-evident means of connection. Integrally therewith and extending from one pocket half are a pair of generally cylindrical receptacles arranged so as to provide three gripping fingers. Integrally therewith and extending from the other enclosing portion are a pair of stem members which are initially oriented in a non-engaging orientation and which are connected by means of a second living hinge. As the enclosing portions are flexed and closed around the object to be encased and protected, the stem members are flexed into a controlled engaging orientation so as to be brought into alignment with the female receptacles.

Abstract: A cable lock assembly for the bundling of lengths of material such as logs includes a lock affixed to a first end of a cable. One of a number of buttons rigidly affixed to the cable at a second end thereof may be placed is a complementarily shaped socket in a base of the lock. The button may be retained in the socket by a cover which is rotatably connected to the base and may be releasably secured thereto in its button retaining closed position. The cable lock assembly of the present invention is easy to handle without the requirement of specific tools and is reusable, thus reducing operating costs. Slipping of the cable through the lock in the closed position of the cover is substantially prevented, thus improving the reliability of the cable lock assembly.

Abstract: A one-piece seal ring for locking an electrical watt-hour meter into the socket of a meter base. The seal ring includes a locking mechanism which once locked cannot be unlocked without cutting or breaking a portion of the lock. The seal ring and locking mechanism are entirely manufactured of one-piece construction using a brightly colored, flexible and resilient thermoplastic, enabling the locking seal ring to be inexpensively manufactured with little or no manual labor using modern thermoplastic injection molding in automated machinery. The coloring of the lockable seal ring, being contrasting to that of the flange of the meter, provides structuring to provide a visual signal of an unlocked or missing seal ring on an installed electrical meter.

Abstract: A tamper-proof adjustment screw arrangement for a vehicle fuel supply system for preventing tampering with the setting of an adjustment screw that is situated in a common recess with a component requiring the availability of continued access. In a preferred embodiment, a tamper-proofing shield coacts with the configuration of a portion of a recess having a stepped bottom wall and with a spanner jam nut on the adjustment screw to create a press fit mounting of the shield that makes it exceedingly difficult to pry off the tamper-proofing shield. As an additional safeguard, the spanner nut is designed to require a special tool for loosening thereof.

Abstract: A locking ring formed of a plurality of curved clamp portions connecting in an end-to-end relationship for securing an electrical power measuring device with a mounting base is disclosed. The semi-circular clamp portions are molded from a single piece of plastic, are identical in construction and are fully interchangeable. Each clamp is preferably formed with a semi-circular curved arc body having a male connection at one end and a female connection at the other end. The male end is formed with a pair of projections of which the first male projection serves as an alignment guide during make-up and use while the second male projection carries a movable latch shoulder for effecting the end-to-end connection with the adjacent mating clamp portion. The female end includes a housing having a central opening with separated first and second entrances formed by a roof mounted lug.

Abstract: A casket lock for a gas utility valve having inlet and outlet conduits includes a pair of mating casket sections releasably connected together along a hinge about which the sections are movable between open and closed positions. In the closed position the casket sections cooperate to define a casket containing the valve and the conduit connections thereto. The casket sections are releasably retained in closed position by a fastener contained within the casket. A tubular lock secured in locked position to the casket prevents access to the fastener.

Abstract: A device for assembly with a bolt or screw upon installation thereof to prevent tampering therewith, including a jacket member for encircling the enlarged fastener head with a collar portion for disposition adjacent its underside to clamp the jacket member in place upon tightening of the fastener and a cap member configured to fit within the jacket member to enclose the fastener head therewithin. A rounded annular channel is formed within the anterior wall of the jacket member and a square annular rib is formed on the outer surface of the cap member to provide a snap-tight interference fit therebetween. The interior jacket wall and the outer cap surface are also tapered at slightly differing angles to provide a supplementary interference friction fit. The snap-fit between the jacket and cap members is sufficiently strong that they cannot be separated using conventional tools without damaging or destroying the members. A special tool is provided for authorized separation of the jacket and cap members.

Abstract: A tamper indicating cover for a nut securing a gas supply line pipe to a gas meter is disclosed. The cover includes a pair of "C" shaped mating cavity sections which are made of plastic and which are shaped and sized to fit around the top, sides and bottom of the nut and a metal hinge clip which is adapted to be permanently snap-locked into the lower end of each cavity section. The upper end of one cavity section is secured to the upper end of the other cavity section either by a metal clip which is adapted to be snap-locked into each end, if permanent coupling is desired, or a wire seal which is inserted through an opening formed at each end, if non-permanent coupling is desired.

Abstract: A seal for a gas meter coupling nut comprising a ring-shaped housing formed of two separate but identical halves made of relatively brittle molded plastic and having integrally molded fastening means for snapping together the two halves into locking non-removable engagement. The two halves are shaped and dimensioned to be freely, laterally movable a small but appreciable amount relative to each other when locked so that tapping said housing will produce a rattle-like sound thereby indicating that the seal has not been broken open and the halves glued back together.

Abstract: A tamper indicator includes a collar which can be positioned to be circumambient a connection nut on a gas meter. The collar includes two portions which are interlocked by snap-catches which are located inside a locked collar. The collar portions are formed of frangible material and can include lines of weakening. Once in place, the collar cannot be removed without breaking it, and once broken cannot be repaired so that an indication is provided that the encircled connection nut may have been tampered with.

Abstract: A seal for a pipe coupling such as is used to connect a gas meter to a gas supply line. The seal is made in two portions having integral fastening means for locking the two portions around the nut of a coupling. The fastening means include a pair of flexible legs on one portion of the seal to be engaged with a tongue on the other portion of the seal. The tongue is provided with an aperture which provides a vertical latch surface and two horizontal latch surfaces extending outwardly from the ends of the vertical latch surface.

Abstract: A tamper indicating cover for use on a nut securing a gas supply line pipe to a gas meter is disclosed. The cover is adapted to fit around the nut so that the nut cannot be accessed (for removal) and once it has been placed around the nut and snapped shut cannot be removed without being broken. In one embodiment of the invention the cover is made up of a pair of plastic "C" shaped mating cavity sections sized to fit around the top, sides and bottom of the nut, a hinge section which pivotally connects the lower end of each cavity section together and which is integrally formed with the two cavity sections and a metal clip which is adapted to be snap-locked into an internal slot formed in the upper end of one cavity section and then caused to snap-lock into a corresponding internal slot formed in the upper end of the other cavity section when the two upper ends are brought into engagement with each other. The edges of the lower end of each cavity section are bevelled at a 45.degree.

Abstract: A tamper indicator includes a collar which can be positioned to be circumambient a connection nut on a gas meter. The collar includes two portions which are interlocked by snap-catches which are located inside a locked collar. The collar portions are formed of frangible material and can include lines of weakening. Once in place, the collar cannot be removed without breaking it, and once broken cannot be repaired so that an indication is provided that the encircled connection nut may have been tampered with.

Abstract: Wellhead distribution valving (known in the trade as a Xmas tree) are protected from potential thieves by security apparatus that prevents access to the mounting flange bolts of the wellhead valving. This security apparatus comprises a housing having two similar half sections. Each half section includes an outer wall, a semi-annular top and a semi-annular bottom. A plurality of locking members are integrally attached to the outer wall at each half to mate with a locking receptacle attached to the inner surface of the outer wall of the mating half section. An inner core of a metallic material is incorporated into the outer wall, the top and the bottom to increase the difficulty of penetration through the surface housing.

Abstract: A fixing device used for a distributor which includes a cylindrical portion, through which a driving shaft is pierced, and a flange for fastening the distributor to the engine with a bolt. The fixing device consists mainly of a pair of container-like covers to be faced to each other with an opening portion thereof for being fitted, one into the other, to untouchably cover the head of the fastening bolt. Both are provided with a bottom plate and a side wall and one of the covers is further provided with a through-hole in the center of the bottom plate for being pierced by the fastening bolt. Both covers are further given necessary dimension to be mutually fitted, one into the other, and accommodate the head of the bolt in the enveloped space between the both covers. Either one cover is provided with engaging tongues for engaging with engaging portion(s) formed in the side wall of the other cover.

Abstract: A tamper indicator includes a collar which can be positioned to be circumambient a connection nut on a gas meter. The collar includes two portions which are interlocked by snap-catches which are located inside a locked collar. The collar portions are formed of frangible material and can include lines of weakening. Once in place, the collar cannot be removed without breaking it, and once broken cannot be repaired so that an indication is provided that the encircled connection nut may have been tampered with.

Abstract: A seal for a pipe coupling such as is used to connect a gas meter to a gas supply line. The seal is made in two portions, which may be connected by a flexible web, and the portions have integral means for locking together around the nut of a coupling. Each portion has an outer shell with internal protrusions formed on the inner surface thereof. The portions are made of pigmented plastic of a type, such as polypropylene, that forms a white blush on the surface when permanently deformed. Hence when an attempt is made to remove the seal by a wrench or the like, the internal protrusions are forced against the nut, forming white blushes on the outer surface opposite the position of the ribs, giving visual evidence of tampering.

Abstract: A tamper resistant cover for the port of a container for medical liquids which when applied to the port indicates that an additive material has been introduced into the container. The port cover is easily molded from a resinous plastic material and includes latch portions which fit into a latch bar with the latch bar serving as a means to prevent access with the latch portions so as to result in a tamper-resistant structure. Preferably, the latch portions are in the form of barbed sections and are guided by means of an inclined ramp into latch openings in such a manner that a compression fit is provided so that after the barbed sections are forced through the latch openings the barbed sections will expand to engage latch surfaces in the latching bar.

Abstract: A tamper-proof closure includes a seal cap and a lock ring for securement to a container having a screw cap. The lock ring has a first portion integrally formed with the bottom of portion of the seal cap and a second portion which is breakably detachable from the seal cap. The second portion of the lock ring is secured to the seal cap by spaced severable attachments. The first and second portions are separated by recesses one of which receives a projection on the container. The seal cap is secured over the screw cap by lips which are formed at its bottom edge and which catch the bottom edge of the screw cap.

Abstract: A device for checking random adjustment of the adjustable parts of a carburetor comprising a locked cover or covers mounted over the adjusting screw heads on the adjustable parts so that the cover or covers can not be removed without breaking it. Thus, the device is intended to inhibit the user or "layman" from improperly adjusting the adjustable parts of the carburetor. Provision of the cover or covers is also helpful in preventing the screws from becoming loose under vibration or other external forces.