Abstract: The invention relates to a protective shield for a vessel having an engine with a transmission portion extending exteriorly of the vessel. The protective shield is designed to be positioned about the interconnection of the out drive and the transmission portion when the out drive is in an elevated position and effective to block access to the fasteners which secure the out drive to the transmission. The protective shield has a pair of spaced side walls converging downwardly and away from a rear wall and each side wall has a hole therethrough to accept a locking pin. The shield deters removal of the out drive by unauthorized persons.

Abstract: A theft prevention device for use in the mounting of automotive audio equipment, such as a two-way radio to a secure structure, such as a "U" bracket or trunnion. The invention is a generally conical-shaped mounting knob that threadably attaches the audio equipment to the mounting bracket. Attached to one end of the knob enclosure is a key lock and attached to the opposite end is a threaded stud that is able to rotate about the longitudinal axis of the enclosure. In operation, the knob, in its unlocked position, is rotated clockwise until the threaded stud is securely attached to its threaded counterpart on the radio. In this position, the lock assembly rotates a cam plate so that an engaging disc engages both the knob enclosure and a stud plate allowing torque applied to the enclosure to be transferred to the threaded stud. The knob is then locked.

Abstract: A trailer tongue locking device includes a hitch bar coupled to the towing vehicle which supports an upwardly extending ball member and a downwardly extending lock nut terminating in a downwardly tapered chamfered surface. An upper and lower plate are securable to the tongue portion of the trailer locking device in an anti-theft locking attachment. The lower plate defines an elongated slot which is aligned beneath the socket portion of the trailer tongue and which receives the chamfered surface of the lock nut. The cooperation of the lock nut, the chamfered surface and the socket together with the ball member provides a secure safe attachment between the towing vehicle and trailer while the degree of movement of the chamfered surface of the lock nut within the slot permits the necessary relative motion within the trailer tongue locking device to accommodate normal towing circumstances.

Abstract: An anti-theft device for protecting air brake control valves from being manipulated is disclosed. A clamp assembly locks on to the valve knobs employed to release the air brakes in a vehicle. A pair of blocks incorporate a key lock assembly and posts to enable portable use of the device. This device is readily adaptable to lock more than one type of several standard brake valve knob sizes by utilizing removable inserts. Impact-resistant plastic or metallic compositions may form the bodies.

Abstract: A cap for fastening devices comprises an inner cap member fittable over a hexagonal engageable portion of the fastening device and having a top wall centrally formed with a threaded bore, an outer cap member fittable over the inner cap member and having a bolt hole formed in a top wall thereof and corresponding to the threaded bore in position, and a bolt to be screwed into the bore through the bolt hole. The inner cap member has a peripheral wall formed with six deformation promoting slits extending longitudinally thereof. The outer surface rear end portion of the peripheral wall has projecting tapered portions for inwardly moving the rear end portion of the inner cap member when the outer cap member is slidingly moved relative to the inner cap member by rotating the bolt relative to the inner cap member in a screwing-in direction.

Abstract: A latching holder for engaging an article comprises first and second co-acting members (1,2) which define a recess (8) for receiving an article. The members (1,2) are pivotally engaged together on one side of the recess (8). The first and second members have releasable co-acting cam means (11,29) on the opposite side of the recess, the cam means being operated to lock the first and second co-acting members together. A locking arm (20) is preferably used to operate the cam means. The holder has particular utility in holding the RF (radio frequency) aerial of a helicopter to the tail boom.

Abstract: A locking device for selectively lockingly engaging a towing element of a trailer to block coupling access to the towing element. The locking device includes a housing defining a towing element receptacle, an engaging element having an engaging portion and an actuating portion for selectively engaging a towing element disposed within the towing element receptacle, a locking compartment adapted to house the actuating portion of the engaging element, a locking compartment cover, an actuating tool coupled to the locking compartment cover and adapted to cooperate with the actuating portion of the engaging element, a locking chamber for receiving the actuating tool when the locking compartment cover is in a closed position, and a lock for selectively locking the actuating tool within the locking chamber and locking the cover in place.

Abstract: An anti-theft coupler device obstructs a trailer hitch coupler to prevent undesired coupling to the tow ball of a towing vehicle. The device comprises a lock body cooperating with and obstructing front and rear facing portions of a trailer hitch coupler, a ball coupler having a resilient, smooth circular face for receipt by the trailer hitch coupler, a locking pin that locks the coupler device to the trailer hitch coupler, and a lock device for preventing access to the locking pin and the ball coupler. The lock body has upright sides with one upright side having an aperture aligned with the trailer hitch coupler for receiving the locking pin, such that the coupler device cooperates with the trailer hitch coupler to prevent undesired coupling. The lock device comprises a padlock that prevents access to the lock pin and undesired removal of the lock body from the trailer hitch coupler.

Abstract: A locking device for locking an outboard motor onto a boat. The locking device includes a housing of greater length than a line formed between the clamping screws holding the motor onto the transom of the boat. A slot is formed in one side of the housing, and is closed on both ends, permitting only transverse sliding application of the housing onto the clamping screws, with the screw handles being received by and confined within the slot. The locking device also includes a padlock, at least one leg of the shackle of that padlock being insertable through a corresponding leg opening formed for that purpose in the housing. The leg opening is positioned so that the handles are thereby trapped in the slot. The padlock thereby locks the shackle into the body so as to impede unauthorized removal of the housing from the clamping screws, thus forming a stop to prevent sliding removal of the housing from the screws.

Abstract: A security device for a trailer wheel to prevent unauthorized trailer movement that can be quickly and easily employed or removed. The device includes elongated wheel lug adapters and a back plate which are mounted with conventional lug nuts to the trailer wheel. A security bar and cover can be quickly engaged to the back plate and locked in place or easily removed when the trailer is ready for use by a key actuated locking mechanism.

Abstract: A collar member is arranged to receive a trailer pin to effect surrounding of the trailer pin in order to prevent access to the trailer pin for unauthorized removal of the associated trailer structure. To this end, the collar includes a channel having a floor, and the channel further including a U-shaped rib arranged to guide a locking head onto the rib to secure the locking head within the channel and effect surrounding of the collar preventing access thereto.

Abstract: Improved safety devices comprising a container; a closure means for the container having a plurality of annular bands rotatably mounted on the closure means, each of these bands being formed with a plurality of elements which are selectably removable for programming the closure means and which must be aligned in the selected manner in order to gain access to the contents of the container; and indicia carried by the container for indicating when the selected elements are aligned in the selected manner.

Abstract: A locking device includes a threaded stud with a flat face cut through the threaded surface parallel to the axial direction of the stud, and a knob which locks over a forward section of the stud and includes a casing having an inner surface which defines a hole extending axially through the casing. The inner surface of the casing has a flat surface extending axially which receives the corresponding flat face on the threaded stud to prevent rotation of the casing with respect to the stud. The knob also includes a tumbler housing which is mounted in an axially-fixed position within the casing to rotate freely when a key is inserted into the tumbler housing, and to remain locked in a fixed position when the key is withdrawn. Fitted into the rearward end of the tumbler housing is a sleeve having a threaded axial hole which engages the threaded stud when the tumbler housing is turned by a key to thereby pull the forward section of the stud into the casing hole.

Abstract: A kingpin security device is provided preferably having a semi-circular plate transverse to a flat base. The plate has a channel therein, also preferably being semi-circular in cross-section. The channel in the plate defines a shoulder thereabove. The dimensions of the channel and the shoulder are such as to form a close fit with the annular recess and annular lip found on a standard kingpin. Opposite the vertically extending plate, the base transitions to a longitudinally extending arm. At the distal end of the arm is a shield plate, disposed generally transverse and spaced apart from the base. After the kingpin security device is affixed to a kingpin, a standard padlock can be attached to this extending arm. The shackle of the padlock prevents disengagement of the kingpin from the kingpin security device. The shield plate prevents the padlock from slipping off the arm, as well as shielding it from vandals or intruders. The kingpin security device also includes a downwardly extending vertical flange.

Abstract: An improved gooseneck trailer hitch locking device for obstructing a gooseneck coupler to prevent undesired coupling by a towing vehicle, the locking device comprising lock bodies cooperating with and obstructing the front and rear facing portions of a gooseneck coupler, a lock pin securing the lock bodies to each other and having a lock device for preventing access to the lock pin and undesired removal of the lock bodies from the coupler. The lock bodies include apertures which can be aligned with each other and with a bore centrally disposed in a downward projection extending from one of the lock bodies. The lock pin is received by the bore and can be extended into the aligned apertures in the lock bodies when aligned to secure the lock bodies to each other.

Abstract: A plate, having a centrally located, tapped hole, which extends only about half-way into the plate, seats a fluid seal therein. The tapped hole threadedly engages the externally-threaded nozzle of a faucet to close off the faucet. The plate further has a plurality of further, throughgoing holes formed therein, spaced apart forty-five degrees of arc, about a common radius from the radial center of the tapped hole. A shackle of a padlock is passed through a given one of the plurality of throughgoing holes, which is (a) closest to the bonnet, stem and handle of the faucet, and (b) would be the first to pass under the faucet, if the plate were to be unscrewed therefrom, and the shackle is locked into the body of the padlock. The padlock is so positioned that it will impact with the faucet, if the plate is turned, to prevent withdrawal of the plate from the faucet.

Abstract: A locking boat propeller cover that completely encloses the propeller whereby unauthorized removal of the propeller is prevented, the propeller is protected from damage, and the risk of injury to people coming into contact with the propeller area is reduced.

Abstract: A locking assembly used to deny access to a nut or to a bolt head to prevent theft of an article that is bolted to a body such as a vehicle. The locking assembly includes a retainer through which the bolt passes and that partially surrounds the nut or bolt head that secures the retainer to the body. The retainer includes a groove that extends circumferentially around it. The locking assembly also includes a housing that fits over the retainer and that is selectively engaged to the retainer by a ball bearing that is pushed into the groove on the retainer when a key turns the shaft of a lock which turns a cam that pushes the ball bearing into the groove. The locking assembly has an exceptionally low profile, made possible by positioning the lock perpendicular to the axis of the bolt. Further strength is imparted to the locking assembly by the fact that the retainer is almost as deep in the axial direction as the housing, and the strength of the retainer reinforces the housing.

Abstract: A fire hydrant locking arrangement which is intended for utilization on a conventional fire hydrant. Moreover, also disclosed is a method of producing a fire hydrant locking arrangement through a heat-meltable locking ring which will inhibit the unauthorized opening of fire hydrants while facilitating the ready servicing of the internal components of the fire hydrant.

Abstract: A door lock security device is disclosed for locking over the shaft of a door lock rotary knob or a door knob. The device comprises an inner cover which is further comprised of first and second shell portions having an opening between them for closing around the shaft of the door lock rotary knob or door knob, an outer cover which substantially encompasses and overlaps the inner cover to sufficiently shield the inner cover to prevent tampering, and a lock for releasably securing the outer cover to the inner cover. When the inner and outer covers are engaged together around the shaft they prevent the door lock rotary knob or the door knob from being manipulated from a closed to an open position. In one embodiment the first and second shell portions of the inner cover are hingedly attached along one edge while in a further embodiment the first and second shell portions are releasably secured together in a closed position at an opposite edge by a clasp.

Abstract: A waterlock comprises a threaded cap nut (11) which fits tightly over the threaded end of a water pipe (15) or faucet (21). A sleeve (10) fits over the cap nut to prevent access to the nut. The sleeve is free to rotate about the cap nut such that turning the sleeve will not turn the nut. The nut has a flat end with a central hole (16), while the sleeve also has a flat end with a central hole (14). A stem (12) with a flange (17) at its base extends outwardly through the holes. The flange secures the stem to the nut by engaging the inside of the nut. An orthogonal hole (18) in the stem accepts a padlock (20) which prevents the sleeve from being removed from the cap nut.

Abstract: A lockable stabilizing apparatus for connection to the king pin of a recreational vehicle and including a lockable collar device securable to such king pin. A pair of divergent legs project from such collar to engage the ground in spaced apart relationship to brace such king pin and, consequently, the frame of the recreational vehicle from rocking relative to the axis of the support wheels. The collar may incorporate a slotted arrangement for loose receipt of the legs of a shackle to provide for wobble of the collar relative to the king pin.

Abstract: The device includes two elongate, identical members hinged together at one end, and having locking tabs projecting from their opposite ends for securing to two members in a closed position in which confronting operating surfaces there are secured over diametrally opposite sides of a garden hose at two axially spaced sections therealong. The confronting operating surfaces of said members have therein a first pair of semicircular, complimentary recesses surrounding a cylindrical coupling on one end of the hose, and having in the bottoms thereof coaxial, arcuate grooves in which diametrally opposite sides of the coupling are seated to prevent removal from the closed members. Another pair of confronting recesses in said operating surfaces frictionally engage diametrally opposite sides of the hose adjacent its opposite end to lock that end of the hose.

Abstract: An anti-theft locking system for marine outboard and out-drive units is provided. This system initially locks the motor propeller to the foot of the out-drive unit, and then allows a chain or cable to be used to lock the device, the boat, and the trailer to an immovable object. The locking system utilizes a locking member with a hook that engages the propeller, and wraps around the foot of the marine drive unit, providing a lockable portion to affix the device to the propeller and foot of the marine out-drive unit.

Abstract: A closure (20) for an outdoor hose bibb (24) is provided. A cap (30) engages the hose bibb threaded spout (46). A lip (52) on a collar (32) passes through a slot (50) in the cap and abuts the narrowed spout (54) above the spout threads. The cap and collar are coupled by a hook (60) engaging a handle (62) and by holes (84,88) in tabs (66,64) extending from the cup and the collar. The shackle (70) of a lock (34) passes through the tab holes.

Abstract: A gooseneck trailer hitch locking device for obstructing a gooseneck coupler to prevent undesired coupling by a towing vehicle, the locking device comprising lock bodies cooperating with and obstructing the front and rear facing portions of a gooseneck coupler, a lock pin securing the lock bodies to each other, and a lock device for preventing access to the lock pin and undesired removal of the lock bodies from the coupler. The lock bodies include apertures which can be aligned with each other and with a threaded bore centrally disposed in a downward projection extending from one of the lock bodies. The lock pin is threadably received by the bore and can be extended into the aligned apertures in the lock bodies when aligned to secure the lock bodies to each other. The downward projection includes aligned openings having central axes generally perpendicular to the longitudinal axis of the threaded bore, which openings are adapted to receive the shackle of a padlock.

Abstract: A securing mechanism for an electricity metering device (30) including a housing (34) having a cavity, a cover (36) positioned on the housing (34) and enclosing said cavity, the cover (36) including hinge pins (120,122) for attaching the cover (36) to the corresponding hinge slots (80,82) on the housing (34) and a sealing screw (126) connected to the cover (36) for releasably securing the cover (36) to the housing (34). The sealing screw (126) is threaded through a hole (124) in the cover (36), and includes an opening (158), and the cover further includes a lug (162) defining a second opening (164) positioned for cooperation and registration with the first opening (158) when the sealing screw (126) has secured the cover (36) to the housing (34).

Abstract: A cap to be placed over the spout of a faucet and form a tight watertight connection therebetween. Located through the cap is a through hole through which a shackle of the padlock is to be located with this shackle to interfere with the exterior threaded connection on the spout and prevent disengagement of the cap from the faucet. With this cap installed on the spout of the faucet, flow of water through the faucet is prevented.

Abstract: A trailer lock structure is arranged for use by fifth wheel trailers, wherein a mounting plate is fixedly secured to a trailer bottom wall forward end to receive fifth wheel securement linkage within a cylindrical tube mounted orthogonally to the mounting plate extending therethrough. A latch plate is pivotally mounted to the cylindrical tube directed through a slot of the cylindrical tube and latched to effect an abutment within the cylindrical tube permitting undesirable removal over mounting of the structure to unauthorized individuals and associated vehicles. The use of support leg tubes for selectively receiving support legs therewithin permits the stable support of a forward end of an associated trailer.

Abstract: An inner member and outer member enclose a trailer kingpin. The inner member has an outer shell with a laterally extending slot for receiving the kingpin. Plates are mounted transversely of the shell adjacent to the slot edges for preventing axial movement of the inner member relative to the kingpin. Padlock shackles are fixedly mounted to and extend radially from the inner member. A padlock body has a key cylinder for locking the padlock body onto the shackles. An outer sleeve member has an open end for receiving the inner member and shaft end, and a side opening positioned and sized to receive the padlock body during locking of the padlock body onto the shackles. The padlock body extends through the side opening when the padlock body is locked onto the shackles, whereby the inner member is fixed axially relative to the outer member and the shaft end is captured in the device.

Abstract: A key lock snap assembly for securing fabric covers to a supporting structure has a base member to be mounted on a supporting structure and having a post with a collar intermediate its length. A key lock snap engaged on the base member has a body with a flange adapted to engage with a fabric cover and an upstanding generally cylindrical barrel providing a top wall with a key-receiving aperture therein and a downwardly opening generally cylindrical cavity. Seated in the cavity are a key code having a key passage, a locking element resiliently deflectable about the collar of the post and engageable with the post, and a rotatable lock in the barrel which will engage the locking element in its position engaging the post below the collar, and this precludes deflection of the locking element about the collar. A key is insertable into the aperture of the top wall of the body and through the aperture of code element into the lock to effect its rotation.

Abstract: A security locking system primarily for use in the locking of a threaded retaining member onto a vehicle wheel. In one embodiment, the threaded retaining member may adopt the form of wheel lug nuts which are threaded onto the threaded studs of a vehicle wheel. The locking system comprises a sleeve or so-called "cover" extendable over the retaining member. A locking mechanism is mounted in an end wall of the sleeve. The locking mechanism is provided with a locking element which is extendable radially for engagement with a groove in the wheel lug and provides a positive locking action. The locking mechanism is provided with a cylindrically shaped key slot and has projections in the key slot. A key is provided with certain grooves alignable with the projections in the key slot to receive the key such that only the key having the aligned and properly sized recesses can be used to open and close the locking element. In this way, a conventional tumbler system normally used in most vehice wheel locks can be avoided.

Abstract: A substantially "U" shaped break-away-bar assembly is constructed to a size and configuration to fit about a portion of an air-inflated vehicle tire. A key actuated lock latching assembly is carried by the break-away-bar assembly and includes an internally threaded connection member utilized to selectively connect the latching assembly to the external threads normally provided on a valve-stem of a tire rim for an air inflated vehicle tire. Operation of the key actuated lock to its locked condition prevents disconnection of the latching assembly from the valve stem. When the break-away-bar assembly is positioned about the vehicle tire and the latching assembly threadably connected to the valve stem rotation of the vehicle tire so that the bar assembly moves beneath the tire, rips the valve stem out of its seat and permits relatively rapid escape of the air from the tire. Slip joints provided for the break-away-bar assembly permit selective adjustment thereof to accommodate different size tires.

Abstract: A lock operable by a key between a locked condition and an open condition, the lock having a fastener for releasably securing the lock to an object, the fastener being movable between a retracted position wherein the lock is in the open condition and an extended position, a spring for biasing the fastener to the retracted position and an enclosure having an opening adapted to allow the insertion and removal of the key from the lock when the lock is in the locked condition and to prevent the removal of the key from the lock when the lock is in an unlocked condition.

Abstract: An apparatus (10) for preventing the attachment of a glad hand brake line coupling device (100). The apparatus (10) includes a pivoted member (32) and a stationary member (31) equipped with a brake line plug (36) to be inserted into the brake line conduit (101). The stationary member (31) and pivoted member (32) may be locked together with the use of a conventional padlock (11) to prevent the coupling of the glad hand brake line coupling device (100).

Abstract: A lockable adjustment mechanism (1) for an adjustable component (2), the adjustment mechanism (1) comprising a first rotatable body portion (3) adapted in use to receive and be attached to a threaded elongated adjustment member (4) of the adjustable component (2), a second non-rotatable body portion (5) attachable to the adjustable component (2) and through which the threaded adjustment member in use passes, means (7, 9) for retaining a selected relative position between the first and second body portions, a third body portion (13) rotatably mounted on the first body portion (3) and lock means (17) operable to lock the third body portion (13) to the first body portion (3), rotation of the third body (13) effecting rotation of the first body portion (3) when locked thereto and thus effecting longitudinal movement of the adjustment member (4) of the adjustable component (2), the third body portion (13) being freely rotatable when not locked to the frist body portion (3) so as not to have any effect on the setti

Abstract: Improvements relating to fire hydrant closures are disclosed in which a cap-shaped cover for the outflow port from a fire hydrant, and a tool for locking and unlocking the cap on the hydrant, is provided. The cap includes a septum-like strong plate which is freely rotatable with the cap, but which is fixed against axial movement relative to the cap. Such septum-like plate, including means for mating engagement with corresponding means at the outflow spigot. The plate further includes means constructed to become engaged by the tool; the tool having a grip portion and a mating portion with a corresponding portion provided on the cap.

Abstract: A lock apparatus for use with a fifth wheel plate having a king pin characterized by an annular groove including a generally cylindrical cup adapted to enclose the king pin, the cup having a transversely extending slot which is registerable with the annular groove, bar means connected to the cup for selective registry with the slot and engagement with the groove, and locking means for locking the bar means into engagement with the groove.

Abstract: A security lock for detachably securing a hose fitting includes two hinged members connected by a lock. The hinge members surround the hose fitting. The lock is compact to fit in small areas. The lock is used for securing watering systems on recreational vehicles.

Abstract: A locking device for preventing access to a bolt or stud-nut which secures an equipment to a base. The device comprises three parts: a block, a cover member and a lock body. In use, the bolt is put through a hole in the block and the equipment and is tightened down. The cover member is then fitted over the head of the bolt or stud-nut and the lock body is inserted in the block and locked by a key. This causes the lock to bear down on the cover member, preventing its removal. The device is compact and able to be used for a variety of applications where equipments are secured by bolts or stud-nuts.

Abstract: A locking system for use with a wheeled vehicle such as a bicycle is described. The system is useful either to lockingly secure a wheel to the fork members of a bicycle or to lockingly secure the seat post to the center frame member. The locking member is cylindrical in shape and covers a specially configured nut that replaces the usual lever operated nut used with a spindled axle system.

Abstract: Apparatus for attaching a component of a personal computer to a desk comprises a first plate having a hole extending therethrough, the hole having a countersunk recess at a first surface of the first plate. The first plate can be secured at its first surface to a surface of a component of a personal computer. A fastening element extends through the hole in the first plate and has a head received in the countersunk recess. A second plate has first and second surfaces and has a first hole for receiving the fastening element, whereby the fastening element may be used to secure the plates together in confronting relationship. A rod extends through a second hole in the second plate and projects from the second plate in the direction away from the first plate. The rod has a portion that is captive between the first and second plates when the plates are secured together by the fastening element.

Abstract: An anti-theft device for motor vehicles equipped with tubeless tires, a collar secured to the valve stem of a selected tire, a locking device adapted to be detachably secured to said collar, a cable carrier mounted on a selected body part or other supporting structure of said vehicle and connected to said locking device whereby upon unauthorized movement or attempted theft of said vehicle the valve stem is forceably removed, said tire is deflated, and said vehicle is more difficult to move.

Abstract: A screw with an anti-theft safety head is suggested, which safety head is provided with a bore receiving a substantially cylindrically constructed tool extension part originating at the screw. At least two rotatably supported pins are arranged substantially parallel next to the bore in the anti-theft safety head, which pins are each rotationally fixed to a locking member. The locking members can be swung into an annular groove on the tool extension part by rotating the associated pin from its upper end, which upper end is accessible from outside and is constructed as an adjusting tool adapter segment. Only when all pins and locking members assume a very precisely defined position, it is possible to pull off the anti-theft safety head. The solid construction of the anti-theft safety head provides a novel anti-theft protection of the screw.

Abstract: Locks securely close a commercial electric power meter box at the front of the meter box where it is visible by a meter reader. One version of the lock readily indicates unauthorized entry into the meter box by extending the seal to the front of the box. Another version of the lock requires a special tool to remove the lock in addition to extending the seal to the front of the box. Yet another version of the lock is equipped with a fully enclosed and protected cylinder lock, which cannot be opened without a special tool and a key even if the seal is broken. All of the locks can be easily installed on existing commercial meter box installations.

Abstract: A threaded packer (40) is inserted into a first enlarged end (52) of an expansion tube (31). Driver dogs (50) on the threaded packer (40) mesh with dog recesses (54) on the expansion tube (31). The threaded packer (40) and the expansion connection (31) are then threaded onto an outlet pipe (30) on a water meter (10) to interconnect the meter (10) to an inlet (26) and outlet pipe (28). By securely holding the meter (10) the expansion tube (31) may be turned away from the tube (31) with a wrench (70), which forces the packer (40) into the tube (31). By forcing the packer (40) into the tube (31), the tube (31) is pushed into the inlet and outlet butt compression joints creating fluid tight joints. A case (37) is then installed over the expansion connection (32) and is secured in place with a locking pin (68 ) and a locking bar (67).

Abstract: A king pin lock for preventing unauthorized movement of a trailer when detached from a tractor includes a hemispherical boby member having a flat planar face which faces the bottom surface of the trailer, when installed. A cylindrical trailer king pin has a circumferential groove for engagement into the fifth wheel of a towing tractor vehicle. The king pin lock has an aperture dimensioned to allow insertion of the trailer king pin. A pair of arcuate locking arms are pivotally mounted for radial movement within the hemispherical body member into and out of engagement with the king pin groove. A key actuated cam mechanism moves the locking arms between the lock and unlock positions. The locking mechanisms are assembled on a removable locking shell which may be replaced if necessary.

Abstract: A locking device for a valve to be used in conjunction with a lock having a hasp comprising a pair of detachably connected corresponding members that when assembled engage the flow valve to substantially prevent its movement. The members include a means to restrain relative twisting of the members, and a means for joining the members together with the lock wherein the hasp is sandwiched between said members.

Abstract: A security locking system primarily for use in the locking of a threaded retaining member onto a vehicle wheel. In one embodiment, the threaded retaining member may adopt the form of wheel lug nuts which are threaded onto the threaded studs of a vehicle wheel. The locking system comprises a sleeve or so-called "cover" extendable over the retaining member. A locking mechanism is mounted in an end wall of the sleeve. The locking mechanism is provided with a locking element which is extendable radially for engagement with a groove in the wheel lug and provides a positive locking action. The locking mechanism is provided with a cylindrically shaped key slot and has projections in the key slot. A key is provided with certain grooves alignable with the projections in the key slot to receive the key such that only the key having the aligned and properly sized recesses can be used to open and close the locking element.

Abstract: A device for locking a spare tire wheel which is mounted vertically on the back of a vehicle. The spare is mounted on studs that project from the back of the vehicle and is fastened in place with stud nuts. The device comprises three major metal parts: One part is a rectangular section tube that fits over one of the studs, with the stud protruding up through it. Another part is a locking assembly shaped to hold the stud nut in place. This assembly is inserted in the tube until it grasps the stud nut. The third part is a cylindrical lock plug which is inserted through a hole in the top of the tube and also through a hole in the locking assembly. Turning a key in the lock plug releases a lock pin that prevents removal of the lock plug. The stud nut can not now be accessed for removal, and the spare tire wheel is prevented from being removed by unauthorized persons.