Abstract: A safety rivet arrangement for indicating the unauthorized opening of a housing whose wall parts are connected with each other at a separating joint which has a covered outer edge. A safety rivet extends through the connection and is considerably harder than the material of the housing wall parts. The rivet ends are arranged recessed, and the safety rivet is also only loosely peened-over so as to be rotatable. By reason of its high material hardness, and the rotatable arrangement, the rivet cannot be drilled out with some evidence of the drilling.

Abstract: A cover for the end of a bolt to which a nut is attached is provided. The cover includes a body having an open end which is communication with an internal cavity. The internal cavity includes a first section of the shape of the nut and a second section. The second section of the internal cavity is cylindrical and is of a diameter between the outer and inner thread diameters of the bolt. In operation, the cover is forced over the bolt and nut such that the first internal cavity section surrounds the nut and the second internal cavity section engages the threads. By virtue of the interference fit provided, the cover may not readily be removed.

Abstract: A locknut including an annular locknut body having a threaded inner surface and an outer surface, a locknut shroud rotatably mounted on the locknut body and having an inner surface facing the outer surface of the locknut body, an annular ridge on the outer surface of the locknut body defining a first shoulder, a second shoulder within the annular shroud, an O-ring mounted on an inclined surface of the locknut body and bearing against an inclined surface on the annular shroud to force the first and second shoulders into abutting engagement, an annular space between the inner surface of the annular shroud and the outer surface of the locknut body, and a plurality of lobes on the outer surface of the locknut body and located in the annular space for receiving a mating key.

Abstract: A protective and decorative cover for application to bolts, nuts and the like. The cover comprises a retainer made of a resilient compressible material having legs which align with the flats of a bolt head or nut. A generally cylindrical cap is then applied over the retainer. The internal diameter of the cap provides an interference fit with the legs of the retainer thereby compressing them against the flats of the bolt or nut. The exposed head of the bolt or the nuts is thus fully enclosed by the cap and protected from the elements. The cap may have a decorative shape and finish that is particularly desirable in automotive, motorcycle and marine applications.

Abstract: A plastic encapsulated nut and washer assembly includes a plastic retainer or body for holding a hex nut and washer in axially aligned abutting relation ready for assembly with an external threaded member. A portion of the plastic retainer provides an annular seal around the washer when the nut is tightened on a threaded member and an extension bore is formed in the plastic material for providing a lock-nut function when the threaded member is extended into the extension bore from the threaded bore of the hex nut.

Abstract: A device for preventing loosening of a prismatic member, such as a fixing nut, screw head or bolt, and particularly a lock nut of a wheel of an automobile vehicle, includes a cap adapted to cover the head of the prismatic member. The cap includes a transverse bottom and a cylindrical skirt in one piece with the bottom and a mechanism means for locking the prismatic member received in the cap. The locking mechanism for the prismatic member in the cap are constituted, in combination, by a ramp inclined with respect to the longitudinal axis of the cap, placed inside the skirt, a shim placed between the ramp and the lateral face of the prismatic member sliding both on the ramp and on the lateral face of the prismatic member, and an arrangement for longitudinally displacing the shim in contact with the ramp and the lateral face in order to exert a transverse effort for locking the prismatic member.

Abstract: A wheel lock apparatus is set forth wherein a wheel mount threadedly attaches to an existing axle bolt for securement of a conventional automotive wheel thereto. A reciprocating butterfly latch is mounted within diametrically spaced slots of the wheel mount and is positionable from a retracted position to an extended position by means of an overlying coaxial lock bolt mounted within a positioning cylinder, whereupon positioning of the butterfly latch to the extended orientation enables selective latching of a main hexagonal body containing the positioning cylinder and lock bolt. Upon latching of the main hexagonal body, the wheel mount may be secured or withdrawn from the associated threaded axle mounting member.

Abstract: A tamper proof fastening device includes a threaded portion, a tool engageable portion for engagement by a tool for rotation of the device and drive coupling means coupling the engageable portion and the threaded portion for transmission of rotation from the engageable portion to the threaded portion. The drive coupling means is frangible upon application of a torque in excess of a predetermined torque to the engageable portion. After fracture, the engageable portion is rotatable on the threaded portion without application of substantial torque thereto. The engageable portion includes a generally cylindrical bore and an annular inwardly directed flange at one end of the bore. The threaded portion is provided with an abutment adapted to engage with the flange to restrict against axial separation of the threaded portion and the engageable portion in a direction.

Abstract: A rotatably drivable roofing fastener of the invention of a synthetic-resinous-polymeric material, such as of an injection molded cut-glass-fiber filled nylon composition, includes means adapted for drillably cutting into insulation material during fastener installation and also means adapted to matingly engae a special tool providing rotatable driving while the tool also concurrently rotatably drives and matingly engages the head of a metal screw, which is located within an upper region of an aperture running lengthwise through the fastener's head and downwardly extending shank, so that the metal screw's threaded shank and tip extending from the aperature at the bottom of the fastener penetrates roof deck or existing roof structure upon rotatable driving so as to secure insulation material to roof deck or existing roof surface.

Abstract: An adjustable footstrap for attachment to the surface of a riding device such as a sailboard, or the like. There is an inner strap member comprising a pair of centrally overlapping straps having provision for attaching outer ends thereof to the surface of the riding device and provision for adjustably fastening inner ends thereof together. There is also an outer padded sheath for covering the inner strap member between the outer ends. The padded sheath comprises a generally rectangular piece of a fabric-covered foam material having provision on facing opposite edges extending between facing opposite ends for releasably fastening the facing opposite edges together. The padded sheath further has provision for releasably fastening the sheath to the inner strap member.

Abstract: Armor panels are bolted to the outer walls of a military vehicle. Anti-theft collars are welded to the outer faces of the panels in surrounding relation to the bolt heads, to prevent unauthorized unscrewing or unloosening of the bolts.

Abstract: A pre-cast dome-like shell is loaded with a predetermined amount of curable sealant. The sealant and dome are similar in composition. The dome is pressed over the exposed end of a fastener. An elastic portion of the shell can expand, thereby increasing the internal volume of the shell to accommodate small variations in sealant amount. A close fit between the shell and fastener, combined with an adequate shell wall, insure proper shell orientation and barrier thickness.

Abstract: A decorative and protective cap for mounting on a threaded stud to conceal and protect a locknut threadably mounted therein, the cap including a shell having a cylindrical portion for providing a close fit with the outer surface of the locknut, a hexagonal wrench-receiving portion on the shell, and a plastic insert retained within the shell. The plastic insert has a portion with depressions therein for receiving internal lugs of the shell to thereby permanently mount the insert within the shell. An annular longitudinally slotted portion of the insert has an internal thread for mating engagement with the thread of the stud.

Abstract: Splices between conductors in of an aerial telephone cable are covered by a closure located within a terminal. The closure has a large central section connected via tapered joints to two end sections. A settable liquid encapsulant is received in the central section. The closure has two halves joined by a flexible hinge that runs lengthwise along a first longitudinal edge. Two rigid tabs of nonuniform thickness running lengthwise along a second longitudinal edge are secured by snaps through apertures in the tabs. The snaps have tapered sections that clamp the varying thickness rigid tabs along their lengths to prevent leakage of liquid encapsulant. The end sections have open cell foam strips fitting snugly between the cable and the end section walls which are fixed with the liquid encapsulant. The encapsulant sets within the open cell foam to form a barrier to passage of contaminants into the central section.

Abstract: An anti-theft system is provided for articles such as modular equipment installed into vehicles with Allen type machine bolts. The system employs a monolithic insert member which is bonded within the hexagonally contoured depression in the head of the machine bolt, and has a protruding portion having a distinctively shaped keying configuration. A turning tool is provided having a handle and a shaft. The distal extremity of the shaft has a recess having a configuration adapted to receive the keying configuration of the insert member.

Abstract: A system to install a vandal-resistant screw. The system includes a screw having a head with a peripheral thread on the head. A tightening member is formed with a cavity. An internal thread within the cavity is able to tighten onto the peripheral thread on the head of the screw. A finishing member is formed with a cavity adapted to fit over the screw head. There are abrading surfaces within the cavity of the finishing member whereby the thread on the periphery of an installed screw can be abraded away by the abrading surfaces.

Abstract: A fog light security apparatus (10) adapted to secure a plurality of fog lights (50) wherein the security apparatus (10) comprises: a base unit (11); a cover unit (12); and a securing unit (13), wherein the securing unit (13) comprises a plurality of securing members (22) adapted to secure the cover unit (12) to the base unit (11); and, wherein the securing members (22) comprise threaded bolt elements (23) having an enlarged head (24) with a specially contoured recess (25) that will only accept a complimentary configured tool (80).

Abstract: A nut, threaded onto the end portion of a bolt receives a cup shaped cover having an internal radial groove receiving an O-ring therein. The O-ring frictionally holds the cover on the nut. The nut is octagonal, hexagonal or square.

Abstract: The invention relates to a safety device for disc brakes. The purpose of the device is to prevent the accidental disassembly of a column forming part of a sliding-caliper disc brake. A cap 51 is rotatably coupled with the head of a bolt 48 forming part of the column and screwed onto a stationary support. The cap has a skirt 59 with a cutout 60 in the shape of an arc of a circle, bounded by stops 50, 50'. In the case of accidental unscrewing of the bolt, one of the stops 50, 50' comes to rest against a stationary part 24 of the brake to prevent further unscrewing. Application to the braking of motor vehicles.

Abstract: An apparatus and method for disassembling a magnetic tape cassette of the type having at least two housing members assembled by a fastener extending through one housing member and attaching internally to the other housing member. The apparatus includes a template for identifying the internal attachment location of the fastener on the other housing member and means for penetrating the other housing member for opening access to the fastener to permit the fastener to be expelled from the housing members for disassembly of the cassette.

Abstract: A security fastener has a threaded body with tool engaging surfaces. It is surrounded by a freely rotatable spinner. When the fastener is tightened down the tool engaging surfaces are removed so there is nothing on the fastener to be engaged by a tool. The side of the fastener is shielded by the rotatable spinner.

Abstract: A device for use with a wheel lug nut having a frustoconical exterior surface includes a sleeve-like body adapted to be loosely fitted about the exterior surface of the lug nut so as to substantially cover the exterior surface thereof. The sleeve-like body defines two opposite inner and outer ends and concentrially-arranged, frustoconically-shaped interior and exterior surfaces extending between the inner and outer ends. When operatively positioned about a wheel lug nut used to secure a wheel rim upon a lug stud of a wheel, the sleeve-like body is retained upon the lug nut between the wheel rim and the frustoconical configuration of the lug nut and prevents the lug nut from being tightened or loosened by a tool such as a pipe wrench, operatively clasped about the exterior surface of the sleeve-like body.

Abstract: Apparatus for assembly with a bolt or screw upon installation thereof to prevent tampering therewith, including a one piece collar device having an outer annular jacket member with a restricted collar portion and an inner annular washer member detachably joined to the jacket member at the collar portion by a frangible diaphragm. The stem of a bolt or screw is inserted through the collar device and tightened into engagement with the collar portion to cause shearing of the diaphragm to separate the washer and jacket members, the washer member being of a larger axial dimension and smaller radial dimension than the collar portion to permit the jacket member to rotate freely about the bolt or screw and the washer member when the enlarged fastener head is tightened into clamping engagement with the washer member. A cap member fits snugly in the free end of the jacket member to enclose the fastener head.

Abstract: A multi-part locknut including a locknut body, a locknut head having an endless curvilinear key-receiving groove therein secured to the locknut body, and a locknut sleeve rotatably mounted on the locknut body and held in position between portions of the locknut head and locknut body.

Abstract: A manhole cover locking bolt construction for locking a manhole cover to an associated frame including a bolt having a threaded shank and an externally threaded head and an endless curvilinear groove in the top of the head for receiving a key of mating configuration for threading the bolt into and out of the manhole cover frame, and a cap for threadably mounting on the externally threaded head to protect the curvilinear groove against entry of foreign matter.

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: The invention relates to a sealed housing for a bolt, including a nut body in threaded engagement with the bolt, and a housing which encloses the nut body. A lock cylinder locks the housing to an anchoring shoulder in the nut body. An elastomeric O-ring is disposed between a circumferential groove in the nut body and a gland bore in the housing.

Abstract: An internally threaded nut is provided which is to be screwed onto a hub bolt of a vehicle, e.g. an automobile, having, on its outer surface, near the forward or leading end thereof, a plurality of key protrusions oriented in the direction of the axis of the nut, and having also, on its outer surface and rearward of the key protrusions, a modified cylindrical section. The modified cylindrical section is not a true circle and is provided with a first diameter interspersed with several flattened, or larger diameter portions, as viewed in cross-section. The key protrusions are preferably trapezoidal in cross-section, are generally parallel to each other, and each has a specific configuration wherein one or more of the key projections differ in width from the others so as to form a particular combination, which can only be turned by a key element or key socket having matching trapezoidal cavities.

Abstract: An aerial terminal for telecommunication cables characterized by its construction which includes a substantially weathertight chamber for receiving a segment of the telecommunication cable and permitting individual wire pairs to be separated therefrom. This chamber is known as the splicing housing. The aerial terminal further includes a terminal housing which communicates with the splicing housing so that individual wire pairs may be operatively connected to a telecommunication terminal block for ultimate connection to individual subscriber lines. In addition to the general construction of the aerial terminal for ease of installation and access for the purpose of connecting individual subscriber lines to the telecommunication cable, the aerial terminal includes unique sealing sleeves for protecting the cable most effectively from adverse weather conditions. Unique locks are also disclosed for preventing unauthorized entry into the aerial terminal.

Abstract: In the preferred and illustrated embodiment, a protective anti-theft device for installation on a fireplug is shown. In the preferred and illustrated embodiment, a nut suitable for installation on a fireplug is provided, the nut having an external groove to receive a snap ring therein. A sleeve is joined to the nut by means of a cooperative groove receiving the snap ring therein. This enables the sleeve to free wheel around the nut. The free wheeling sleeve prevents theft and pilferage of the nut once it is installed on a fireplug at the top end to support the stem in the fireplug.

Abstract: The present invention is directed to a locking device to frustrate unauthorized removal of stereo systems and like assemblies from automobiles or trucks. The device includes a frusto-conically shaped housing with a rotation prevention mechanism fastened therein. A plurality of spaced nubs function to prevent removal of the locking device from the threaded shaft of the electronics unit without a tool having the proper combination of mating openings to receive the nubs.

Abstract: A lug attachment for detecting the removal of a wheel comprising a frangible shroud and an internally threaded member for attaching said shroud to the lug of a wheel mounting plate. The threaded member comprises a pair of split sleeve sections that laterally flex for engagement with the threads of a lug by an axial thrust. Thereafter, an axial thrust of said shroud clamps and secures the threaded member onto the lugs. Means formed on said shroud retains the threaded member in its axial position of attachment to a lug and prevents removal except by breakage.

Abstract: The disclosure is directed to the method of addition, in a fixed and inexpensive way, of a cylindrical sleeve to a key for an anti-theft wheel lug nut having a complementary key pattern formed on a surface thereof, and to the resulting key. The cylindrical sleeve of the key is formed separately from the key and then rigidly attached onto a groove formed in the key itself. The sleeve acts as a guide for the key and prevents the dismounting thereof during the torquing and untorquing of the complementary patterned lug nut.

Abstract: This invention is directed to protection against theft or other unauthorized removal of articles secured by threaded nuts or the like, particularly truck tires. A tamper-proof fastener is provided having a locking cap which engages the underlying lug bolt and a seal which surrounds the locking cap and the lug nut of the tire to be secured. The seal rotates freely about the locking cap and the lug nut so as to prevent anyone from loosening the lug nut without first breaking the seal.

Abstract: An anti-theft device for a marine propeller has a spinnerplaced over the propeller nut which secures the propeller to the propeller shaft, and the spinner is held in place against unauthorized removal by a lock pin projecting from the propeller nut into an annular recess in the spinner, enabling the spinner to spin freely relative to the propeller nut while capturing the spinner against axial movement which would expose the propeller nut for unauthorized wrenching, the spinner including a radially extending access passage for gaining access to the lock pin with an authorized drive member to move the lock pin out of the annular recess for selective release of the spinner from the propeller nut and authorized access to the propeller nut for wrenching.

Abstract: The insert of the invention is designed for installation in a gasoline filler neck so that the neck is restricted to a size allowing filling only by unleaded gasoline-size nozzles. The insert is designed for situations where the original restrictor has been removed and/or altered so that regular gas may be used. The insert is designed with locking teeth around the perimeter to allow the insert to be placed into the neck and yet provide that the insert is difficult to remove.

Abstract: A roof membrane anchoring system is provided of the non-penetrating type, including a base member with an enlarged head carried by an upstanding stem, a disc, and a socket cap which includes a top, depending legs, and feet carried at the bottoms of the legs, the cap being of somewhat resilient material. A clamp is provided for constricting the legs after the socket cap is placed over the head. When uplift forces on the membrane act to deform the disc, it acts against surfaces of the feet of the socket cap, to urge the feet together, thereby providing greater security of the socket cap during periods of high wind velocity. The base member has a passage for insertion therethrough of a fastener, the passage including a quantity of self-curing adhesive material which is cured after insertion of the linear fastener, the adhesive material serving to adhere the linear fastener either to the base member or to a holding element for the linear fastener, or both.

Abstract: A tamper proof pop rivet assembly comprises a base plate having base plate holes of a greater diameter than that of the barrel of a pop rivet and of a greater diameter than that of the flange of the pop rivet and further comprises a top plate having top plate holes of a greater diameter than that of the traction pin of the pop rivet and of a lesser diameter than that of the barrel of the pop rivet. The top plate is spot welded to the base plate to sandwich the flange of a pop rivet therebetween. The assembly can be used as a replacement for a conventional pop rivet assembly and shows visible signs of any attempt at drilling-out or replacing the pop rivet.

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 lock and coupling apparatus for securing fire hydrants is disclosed. The two piece apparatus comprises an inner member concentrically received within an outer cylindrical member. The inner member is formed with a socket for receiving the five sided hydrant valve post. A snap ring connects the outer member to the inner member while permitting rotational movement therebetween. A square lock pin moveable between locked and unlocked positions is provided to lock the inner and outer members so that rotational movement of the outer member is transmitted to the inner member. A specifically designed wrench for imparting rotary movement to the outer member is also disclosed.

Abstract: A locknut having a body portion with an outer surface and first and second ends, a thread extending inwardly into the body portion from the first end, a depression in the second end, an inwardly tapered lobed curvilinear surface defining the periphery of the depression for receiving a mating key, and an external thread extending from the second end onto the outer surface for receiving the internally threaded surface of a sleeve mounted on a key for attaching the key to the locknut. The locknut as described above including a rotatable sleeve mounted thereon with a shroud located radially outwardly of the external thread. A locknut as described above wherein the outer surface extending from the first end is frustoconical and terminates at an annular shoulder which is located radially outwardly of the external thread.

Abstract: The fastening device has a head portion with a uniform cross section, the uniform cross section having a plurality of non-uniform indentations. A matching socket wrench is provided having an internal cross section matching the exterior cross section of the fastening for tightening or loosening the fastening. The invention is particularly useful for preventing unauthorized removal of automobile wheels.

Abstract: A tamper-proof or security threaded fastener assembly adapted for use with standard size bolts and screws is provided to reduce or eliminate the unauthorized removal of threaded fasteners from their desired position of fixation. A cap portion is adapted to completely encase the head of the bolt or screw such that, after tightening of the bolt or screw, access thereto is restricted to a special non-standard tool. In one embodiment, a nut portion is provided comprising an elongate strip provided with a threaded hole to receive the bolt and a perpendicularly disposed flange. An additional hole appropriately provided in the base or plate through which the bolt is attached is adapted to receive the flange of the nut portion in a manner which prevents the nut portion from being rotated after the bolt is tightened and fully drawn up to the base or plate.

Abstract: Tie down system for a three wheeled motorcycle which uses a pair of securing plates in conjunction with tie down straps to be located about the axle which supports the rear wheels of the motorcycle and a spaced apart locking plate which utilizes a movable clamping bar to be tightly connected over a bracing bar mounted on the frame of the motorcycle.

Abstract: A wheel locking device is a locking means wherein one of a plurality of fastening nuts with which a wheel plate covering both the inner face part of a vehicle tire and the external face of a wheel is secured to the wheel by a lockable nut which cannot be removed without using a key.

Abstract: Correspondingly keyed combination of a round-headed bolt fastener and a generally cylindrical socket, preferably for use in securing an automobile wheel cover against theft. The fastener has a plurality of axial slots, or lock impressions, about the periphery of the circular head which may be spaced in accordance with a preselected code. The wrench socket is provided with a corresponding number of key elements projecting inwardly from the cylindrical wall of the socket, the position of the key elements being in accordance with a preselected code. When the key code of the wrench matches the lock code of the fastener, the wrench socket may be slipped over the fastener head with the key elements engaging the lock impressions so that the wrench may tighten or untighten the fastener. The fastener has an axial recess extending from the outer face of the head with an inner beveled surface about the recess opening.

Abstract: The security device consists of a bolt portion and/or a bolt fastener portion which utilize nuts which do not threadedly engage any other part, but give the impression that they do so and that they are the fastening means. These nuts turn freely as if stripped if an unauthorized person attempts to remove them.

Abstract: A security locking bolt for flanging "Christmas tree" installations, valves and other equipment to a pipeline header or a pipeline, which includes a bolt body having a partially threaded bore and a security bolt head integrally provided on one end and a cooperating locking head secured to the opposite end of the bolt body by means of an internally-seated locking bolt which threadably cooperates with the internal threads in the bolt body. In a preferred embodiment a roller bearing is also provided in the bolt body bore and an end cap closes the locking bolt access opening in the locking head. In another preferred embodiment of the invention a grease fitting is threadably inserted in the security bolt head and longitudinal apertures are provided in the roller bearing and the locking bolt in order to provide a means for inserting grease into the threaded bore and removing the end cap situated in the locking head, by application of pressure.

Abstract: A fastener for the protection of vehicle wheels, including a skirt member which fits around the wheel lug nut and a retainer member which is threaded onto the exposed end of the lug and overlies a part of the skirt member. The retainer member is recessed into the skirt member and includes a socket part which strips upon tightening to prevent removal of the retainer member from the lug.

Abstract: The fastening device has a head portion with a uniform cross section, the uniform cross section having a plurality of non-uniform indentations. A matching socket wrench is provided having an internal cross section matching the exterior cross section of the fastening for tightening or loosening the fastening. The invention is particularly useful for preventing unauthorized removal of automobile wheels.