Abstract: A door closure for an electric meter box comprises a barrel lock, a lock receiver, a tie rod, a locking nut, and a base plate. The lock includes a shank portion, a head portion, and a flange. The head portion resides in a hole in the meter box door, and the flange captures the outside surface of the door. The lock shank is received by a hole in one end of the lock receiver. The hole has an internal groove for receiving the locking balls in the lock shank. The other end of the lock receiver receives the threaded end of a tie rod. The other end of the tie rod is welded to a base plate, which is screwed into the back of the meter box. The position of the lock receiver can be adjusted to match the depth of the meter box by screwing the receiver up or down on the tie rod. The position of the receiver is then fixed by a lock nut immediately behind the lock receiver. The lock receiver can also be aligned with the door hole by flexing the tie rod.

Abstract: A security device for preventing rotation of a wheel on a vehicle, such as a trailer. The security device includes a base member attachable to the vehicle wheel and a cover member for positioning over the base member wherein the cover member supports a bar extending beyond the radius of the vehicle wheel. The base member and cover member are formed having a cooperating non-circular shape whereby the cover member is prevented from rotating relative to the base member.

Abstract: A padlock protecting locking apparatus for protection against hacksaws, bolt cutters and the like is disclosed comprising an elongated tube slideably received by a slidebolt latch via an access channel in the tube. An aperture located substantially in the center of the tube provides access to the slidebolt latch. A bridge element spans the aperture and permits the shackle of a padlock to encircle the slidebolt latch and the bridge element, thereby locking the apparatus to the slidebolt latch.

Abstract: A new jack storage container for storing a jack on a vehicle. The inventive device includes a housing formed from separable front and back portions hingedly coupled together at the bottom of the housing. A pair of spaced apart tabs are extended from the top of the housing. Each of the tabs has first and second separable portions with the first portion of each tab located on the front portion of the housing and the second portion of each tab located on the back portion of the housing. Each of the tabs also has a hole extending through it between its respective first and second portions.

Abstract: A bicycle locking device is disclosed having a base that is securely mountable to a surface, such as a wall, a post, or a ceiling and a support arm connected at one end to the base and having a jaw-like fastener at its other end which cooperates with a jaw-like locking arm connected to the support arm for lockable attachment to a bicycle. The bicycle locking device is retractable for easy storage.

Abstract: A boat propeller lock for boat propellers of the type that include a central shaft with a plurality of outward extending propeller blades, and that attach to the drive shaft of an outboard or inboard/outboard marine motor is provided. In one embodiment, the invention includes a generally U-shaped member consisting of a base member and a pair of parallel arms. A generally C-shaped member having a pair of parallel arms extending perpendicular to the C-shaped member, with one arm extending from each end of the "C" of the C-shaped member. The U-shaped member being adapted so the base member fits the front portion of an outboard or inboard/outboard lower unit with the parallel arms facing aft of the lower unit, and the C-shaped member being positioned over the rear of the marine propeller with the parallel arms facing forward. The parallel arms of the U-shaped member being slidably engagable with the parallel arms of the C-shaped member.

Abstract: An apparatus for locking a propeller is provided for reducing the risk of theft of a propeller from a motor. The apparatus comprises a cover plate to cover an end of the propeller shaft. A U-shaped bar encircling one blade on the propeller and connected to the cover plate secures a portion of the cover plate against the end of the shaft. A locking arm connected to the cover plate, encircling another blade on the propeller, and connected to the middle portion of the U-shaped rod secures the remainder of the cover plate against the end of the shaft.

Abstract: A locking device for a trailer and hitch of the ball and socket type, comprising an upper jaw and a lower jaw interconnected together by a shaft for reciprocal movement relative to each other. A locking mechanism keeps the two jaws apart at fixed distances over a ribbed portion of the shaft. In use, the two jaws are locked about the socket portion of the hitch to prevent unauthorized removal of the trailer. When the trailer is attached to a tow vehicle, the tow ball nut is received in an opening in the lower jaw. When the trailer is unattached, a dummy ball extends into the socket of the hitch. In both position, the socket portion of the hitch is received in an aperture in the upper jaw.

Abstract: A padlock for maintaining at least two hasps in engagement, including a two-part metal housing including first and second housing portions which are mutually hinged together so as to be pivotable between a mutually open orientation and a mutually closed orientation and a key-operated locking mechanism for selectably locking the first and second housing portions in the mutually closed orientation, the first and second housing portions each including hasp enclosing portions which are operative when the first and second housing portions are in the mutually closed orientation to maintain the hasps in engagement and to prevent disengagement of the first and second housing portions therefrom and when the first and second housing portions are in the mutually open orientation to permit disengagement of the first and second housing portions from the hasps and to allow the hasps to be disengaged.

Abstract: A device and method are provided for securing and selectively locking a portable item to a supporting surface. A generally flat attachment plate is connected to a generally flat base plate containing a lock barrel and a lock cylinder. The attachment plate fastens to a device being secured. A securing stud fastens to the underside of the supporting surface such that the shaft of the securing stud protrudes through a hole in the support surface and base plate to extend into threaded engagement with the lock cylinder barrel. The securing stud has a thin flat head which when adhesively attached to the supporting surface prevents the securing stud from being rotated or removed.

Abstract: The present invention is a safety guard comprising a pair of opposed cups adapted to receive the opposite ends of the aerosol container respectively. Each cup has an integral arm extending toward the opposite cup, each arm having a perpendicular flange. One of the flanges is formed with an opening for receiving a portion of the other arm, the flanges adapted to engage each other and having apertures aligned when the flanges are together. The apertures are adapted to receive the shackle of a padlock to lock the guard installed over an aerosol container in a way which may be removed only by authorized cognitive persons.

Abstract: A theft deterrent arrangement for a passenger side air bag assembly includes hollow bolt shield cylinders surrounding mounting bolts holding the air bag assembly to a fixed cross member, a locking cylinder locked in place to prevent access to the bolt head. Removal of the locking cylinder with a key allows removal of the bolts and air bag by use of a socket wrench.

Abstract: A locking device for a valve having a rotatable shaft including a stop plate, and a stop secured to a housing, including a hollow body having a first chamber for receiving the shaft, a threaded aperture extending into the first chamber for receiving a screw, a second chamber surrounding the screw, a lockable closure preventing access to the screw, and a tab coupled to the hollow body adapted to be received between the stop plate and the stop.

Abstract: A cable lock attachment for portable articles that is protected from tampering, whether by twisting or otherwise, when the associated cable lock is operational. The attachment comprises a shell with concentric axial ports, one large and one small, and opposed lateral ports. The small port is in proximity to a threaded socket in the article. A collar having a wide head and narrow stem fits through the large port and the stem fits into the small port with the head remaining inside the shell and the stem abutting the article. The stem is secured to the article by a screw that has an internal hex head. The stem is slightly longer than the thickness of the shell so that the shell is free to swivel about the stem when secured. The cable extends through the lateral ports, preventing access to the screw when the cable lock is secured.

Abstract: The present invention concerns an assembly for removably securing a real estate key box to a fixed structure, such as a door or wall. The assembly is designed so that when the key box is mounted on the assembly and locked, neither the key box nor the assembly can be removed from the structure.

Abstract: An anti-theft device that can be used on different size trailer tongues of the type having a socket for receiving a tow ball of a trailer hitch. The device includes a base and a socket insert that projects from the base and is received within the socket of the trailer tongue. A pair of side members are joined to the base and oriented so that the trailer tongue must be passed between the side members for insertion and removal of the socket insert from the trailer tongue socket. Each side member has first and second holes formed therein. A retaining rod inserts into either of the first and second holes of the side members so that the retaining rod extends between the side members and above the trailer tongue to prevent the passage of the trailer tongue between the side members and thus prevent removal of the socket insert from the trailer tongue socket. The first and second holes are each located at different positions to accommodate trailer tongues of different sizes.

Abstract: An anti-theft device for obstructing access to a nut securing a propeller on a drive shaft of an outboard engine assembly. The device comprises a two part yoke which partially encircles the housing of the engine assembly and its drive train at one end, and at its other end locates a cap over the nut threaded to the drive shaft. The two parts enable adjustment of the longitudinal dimension of the device, for accommodating outboard engine assemblies of different dimensions. In alternative embodiments, two types of locks are provided. One type is an integral key operated locking cylinder. The other type accepts a conventional padlock. In a further alternative embodiment, the cap has projections for engaging propeller blades and preventing these blades from rotating when the device is installed.

Abstract: A trailer hitch lock for enclosing a trailer hitch to secure the trailer against theft. The trailer hitch lock includes a base plate, a set of locking plates pivotably mounted to opposing sides of the base plate and a locking mechanism for securing the locking plates together. A mounting ball is mounted on the base plate and is configured to engage the trailer hitch ball socket. The first ends of the locking plates are hingeably connected to the opposing sides of the base plate. The second ends of the locking plates and the locking mechanism cooperate to secure the locking plates together.

Abstract: A trailer locking device adapted to be fixedly inserted into the cup of a trailer hitch. The locking device, which can be in the shape of a ball, includes an outer shell made from a plurality of movable plates. Once inserted into the cup of a trailer hitch, a locking mechanism is used to separate or otherwise move the plates apart in order to expand the size of the outer shell. Once locked into position, the trailer locking device becomes lodged within the cup of the trailer hitch preventing a trailer in association with the trailer hitch from being stolen.

Abstract: A trailer ball guard that is lockably connectable about a ball shaft and a mounting nut of a trailer ball and hitch assembly for deterring removal of the ball from the tow bar and theft of the trailer ball assembly and a connected towed vehicle. The trailer ball guard includes a sleeve assembly that is connectable between a tow bar and a mounting nut, a cap that is connectable to the sleeve assembly in a manner to entrap the ball shaft and mounting nut therein, and a locking mechanism securable in connection between the sleeve assembly and the cap.

Abstract: Disclosed is a security mechanism for electronics enclosures such as network interface units which permits access by customers and craftspersons. A bracket is mounted to the cover of the enclosure. The bracket includes two apertures, one for receiving a security screw, and the other for receiving an ordinary screw which fastens the cover to the enclosure. The bracket also includes a cavity which accommodates the shackle of a padlock so that the ordinary screw can be covered and access prevented. Craftspersons can override the padlock by loosening the security screw and moving the bracket until the padlock is removed from the cavity.

Abstract: A burglar-proofing device for a computer includes a rear panel having a first pair of grooves and a hole formed therein, and a cover having a second pair of grooves and a fastening receptacle formed therein. A ring screw having a fastening portion formed on a first end and a projecting portion formed on a second end positioned opposite the first end is provided so that the fastening portion is connected within the fastening receptacle when the computer is in an assembled state. A bracket having a slot formed in a center portion and first and second arms extending outwardly from the center portion is provided so that the first arm is inserted through a first one of the first pair of grooves and a first one of the second pair of grooves, the second arm is inserted through a second one of the first pair of grooves and a second one of the second pair of grooves and the projecting portion is inserted through the slot when the computer is in the assembled state.

Abstract: A security system (28) for a lap-top computer (30) with a monitor housing (32) hinged thereto. The system (28) comprises a low profile mounting plate (34). A component (36) is for affixing the low profile mounting plate (34) to the monitor housing (32). An elongated flexible retainment cable (38) is provided. A first assembly (40) is for locking in a swiveled manner, a first end of the cable (38) to a table/counter top (41). A second assembly (42) is for locking in a universal articulated manner a second end of the cable (38) to the low profile mounting plate (34). The monitor housing (32) of the lap-top computer (30) can be moved from a closed position to a vertical opened position, without interference from the cable (38) for full freedom of movement and positioning thereof.

Abstract: An equipment security mount for protecting computers or other equipment from unauthorized removal includes a base or pad adapted to be fixed to a mounting surface such as a desk top and a cover having a flange depending from a floor on which the equipment is mounted from below The cover is thereafter locked over the base to prevent removal of the equipment from the base and the base from the mounting surface. The base and cover are secured by lock pins engaging aligned lugs or straps in the base and cover and retained by locks fixed in lock openings in lock housings of the cover through which the lock pins are installed or removed. Preferably the improved cover is made from high strength resilient plastic with brass inserts in the housings which secure the locks and capture adjacent ends of the lock pins to deter removal by bending of the flange.

Abstract: A bicycle security mount which includes a base and a pair of spaced supporting arms extending outwardly from the base. Each supporting arm has a threaded aperture for receiving a bolt. A shield is mounted on each bolt. Each shield has a bore and a counterbore. The shank of the bolt extends freely through the bore and lies entirely within the counterbore of the shield. The tines of the front fork of a bicycle are positioned on the security mounts so that the tines straddle the supporting arms. Each tine is positioned between a supporting am and a shield. The bolt lies within the downwardly facing open ended slot of the tine so that the tine is clamped between the shield and the supporting arm. The clearance between the bolt and the inner surface of the counterbore is too small to receive a conventional socket wrench but large enough to receive a socket wrench which is specifically designed for the bicycle security mount. More specifically, the bicycle security mount includes a cap for each shield.

Abstract: A tamper-proof device is provided for lockingly attaching a piece of equipment such as a TV set or a microwave oven to a support base. It has a pair of rigid plates that are respectively connected to the piece of equipment and the support base. One of the plates is surrounded by a flange which defines a closed area in which wedges are located to hook both plates together. The two plates are rigidly connected to each other by a screwable bolt that can be reached with a screw driver through a coaxial opening provided in the flange. A sleeve extends in between the head of the bolt and the opening. This sleeve can be closed by key-operated lock in order to prevent access to the bolt. The lock is free to rotate within the sleeve even when its latch is locked in outward position. Such prevents a theft from breaking the latch by forcing the lock into rotation in a cantilever fashion.

Abstract: A locking device to fit over a tractor trailer or container carrier glad hand air coupling consists of a rectangular cage of cut structural steel with a drilled pin hole and a welded perpendicular flange with a hasp hole as one piece and an angle flange with a hasp hole and plug welded pin as a second piece. In use the flanged cage is placed over the air coupling with the pin hole over the air hole and the pin passed through the pin hole into the air hole and the hasp of a padlock passed through the hasp holes and locked to secure the air coupling. The locking device is fabricated from structural steel and angle irons using conventional cutting, drilling and welding techniques.

Abstract: A locking system comprising a locking fastener having tamper-resistant features, and a special key having a bit at one end for engaging a socket in the head of the locking fastener to rotate the latter. The internal configuration of the socket corresponds to an external configuration of the bit, and the corresponding contour of the socket prevents the fastener from being turned by tools other than the special key. The fastener may have left-handed threads on its shaft and its head may be recessed in a counterbore in a closure part to prevent gripping tools from gripping an external surface of the head. The configurations of both the socket and the key may readily be made by economical metal working techniques.

Abstract: A lockable cover and seal for a threaded nozzle or spout, such as a hose bib cock assembly having a passageway, an end face, an external threaded portion adjacent the end face, and anti-siphon valve in the passageway including a portion protruding outward of the end face, generally includes, in combination, a lid, a seal, a swivel arm, and a shielding cap. The lid is bell-shaped and has a central axis, an inner end including a threaded portion for threaded engagement with the threaded portion of the spout, a central cavity and an annular shoulder facing inwardly for juxtaposition to the spout end face. The seal includes an inner side for sealing against the end face of the spout and an outer side for sealing against said annular shoulder and a forward extending central recess for receiving any protruding portion of the anti-siphon valve.

Abstract: A propeller lock for preventing unauthorized removal of a marine propeller from the drive shaft of a marine propeller gear housing, the marine propeller having a plurality of blades extending from a generally hollow cylindrical hub having an outer end and an inner end, the hub being connected to the drive shaft by a nut, the nut and the drive shaft being contained inside the hub and the outer end, including a cover for covering the outer end of the propeller to prevent removal of the nut, and rotatable clamps for connecting the cover to the propeller.

Abstract: A lockable doorknob enclosure for use on doorknobs of the type having a knob attached to a shaft having a longitudinal axis. The lockable doorknob enclosure comprises: a containment structure having a sealable cavity for enclosing the doorknob and a portion of the shaft; an adjustable spacing mechanism; and a locking mechanism. The containment structure includes first and second pivoting structures which are preferably connected by a hinge. The first and second pivoting structures form a containment cavity of a size sufficient to receive therein the doorknob and a portion of the shaft when the pivoting structures are pivoted into a first, or closed, position. The containment structure has an aperture therethrough of dimensions sufficient to allow the shaft to be installed through the aperture when the first and second pivoting structures are pivoted into a second, or open, position.

Abstract: A locking device for air brake valves on vehicles is provided which comprises releasable elements for engaging an air brake valve control knob at the dashboard of the vehicle to prevent the control knob from being pushed inwardly to release the air brakes when the locking device is properly secured in place between the head of the control knob and the dashboard of the vehicle. A first element and a second element are adapted to be coupled together about the shaft of the control knob, and locked together. A portion for engaging the head of the control knob prevents removal of the head from the shaft of the control knob.

Abstract: An improved locking bolt for a T-handle assembly is provided. The locking bolt has an associated security collar which encircles the bolt and prevents axial movement of the T-handle housing relative to the bolt when the threaded end of the bolt is threaded into the door frame of the closure. The security collar is held in place by a pin which extends through corresponding apertures in the collar and the bolt. A ball bearing is positioned in a recess formed in the bolt to prevent axial movement of the collar on the bolt in the event that the pin is defeated. The bolt and the security collar also act as a secondary locking mechanism by preventing rotation of the bolt when the lock is released, a special wrench being required to rotate the bolt after the lock is removed.

Abstract: A gooseneck trailer locking apparatus is formed by a pair of elongated telescoping members having a hitch ball and chain lock at one end for connection with the king pin of a goooseneck trailer. The other end of the telescoping members is provided with a clevis element lockably closely surrounding the depending portion of a trailer leveling and supporting jack by a clevis arm and lock securing the clevis to the jack.

Abstract: A wheel-locking device has a nut shield (13) with a wheel-bolt orifice (17) on an attachment-plate (18) end of the nut shield. The nut shield is positioned on a wheel bolt (14) between a wheel (5) and a wheel nut (15) that is tightened onto the wheel bolt. Walls (37, 39) of the nut shield have lock-rod keyholes (12, 51) that are sized and shaped to receive a keyhole shaft (11) having lock extensions (19, 40, 49, 50) positioned in line with keyhole bays (20) in the lock-rod keyholes. Then a lock rod (6) can be rotated to a locking position in which the lock extensions are not in line with the lock bays of the lock-rod keyholes. In this locking position, the lock rod is then locked onto a wheel clamp (1) that hooks over a wheel.

Abstract: A king pin locking mechanism employs a sliding locking bar in a housing for engaging a king pin. A key-activated cam moves dead bolts outwardly of the locking bar to lock that bar in the housing. Tampering forces applied to the cam deform a deformable member relocking the cam and dead bolts against unauthorized movement.

Abstract: The present invention provides for a key and bolt lock device. The key is constructed in a housing shell to be received by the head of the bolt. The key includes a power source, typically a battery, and a transmit coil which is capable of transmitting both energy and data from the key to a receiving coil in the bolt. This energy and data transfer is usually conducted by magnetic coupling. The key also includes a memory device for storing security codes which are used to compare to security codes stored in the bolt as well as a device for retrieving and transmitting the security code, typically an 8-bit microcontroller. The bolt has a body which is operatively associated with a head of the bolt so that the head rotates on the body when the bolt is in a locked position. The bolt also includes a latching device which is capable of attaching the head of the bolt to the body of the bolt so that the head and body may be rotated together.

Abstract: A wheel lock device including a shoe. The shoe has sides, a top with a central aperture wherethrough a wheel strut may extend. The shoe has a generally planar bottom with an anti-slide portion that precludes the wheel lock device from sliding along the supporting surface. The shoe has dimensions such that a strut-mounted wheel assembly of a vehicle may be enclosed therein. The shoe is separated vertically into two equal hingedly connected parts which allow it to be opened for receiving the wheel assembly, or closed for encasing the wheel assembly, whereby precluding free rotation along the supporting surface. Included is a lock that allows the two parts of the shoe to be releasably secured in the closed position. Locking the two parts prevents removal of the shoe from the wheel assembly. Removably connected to the lock is a key. The key is rotated in the lock by a user for release of the lock to permit the shoe to be opened for removal from the wheel assembly.

Abstract: The fire hydrant locking device has a cap (20) enclosing the operating nut (12) of the fire hydrant (6). The cap is secured in place on the top surface of the fire hydrant bonnet (10) by at least one arm (22) extending downwardly over and about the bonnet and extending beyond the fire hydrant barrel mounting flange (9). The lower end of the arm (22) is attached to the flanges (9 and 10') of the barrel (8) and bonnet (10) by bracket (26) and its pad lock (25) so that the cap, arm, and bonnet of the fire hydrant cannot be removed without first removing the fire hydrant locking device. Another locking bracket (80) is received on the outlet cap (17), of the fire hydrant hose outlets (16). Chain (86) is passed through each locking bracket encircling the fire hydrant, whereupon the ends of the chain are pad locked together.

Abstract: A case and lock for reducing damage and deterring theft of boat propellers. The invention is comprised of a case for enclosing a boat propeller and a portion of a propeller drive unit. The case has a pair of pivotally connected members which are supported by a horizontal stabilizer fin of a propeller drive unit. The lock lockably connects the case members. One optional feature of the invention are running lights mounted on the sides of the lockable case members. Another optional feature is an electronic alarm which is activated during attempts to steal the propeller.

Abstract: A locking assembly for preventing access to a nut threadedly secured onto a bolt, the nut and bolt generally mounting an article, such as an outboard motor, to a structure, such as a boat transom. The locking assembly is independent of the bolt and nut, and includes a cylindrical housing that receives the bolt through one end thereof and allows for the threading of the nut onto the bolt. A cap that is received on the end of the housing opposite the bolt, by a boss and counterbore arrangement, is rotatably retained by a roll pin. The cap includes a tapered bore that receives a threaded stud and locking lug assembly. The threaded stud is received by a locking lever that is nonrotatably retained within the housing. As the locking lug is tightened, the cap is secured to the housing to prevent access to the nut.

Abstract: An apparatus for locking a closed notebook computer on a computer support includes a lock support which has a counterbore and a shackle hole which are formed therethrough and which intersect each other. The computer has a computer housing and a display unit pivoted to the computer housing. An L-shaped locking plate has a horizontal portion located intermediately over the display unit, and a vertical portion with an aperture located between the lock support and the display unit. A bolt member extends through the counterbore of the lock support and the aperture of the L-shaped locking plate to engage threadably within the threaded hole of the computer. A padlock is fastened to the computer support and has a shackle extending through the shackle hole of the lock support so as to cover the recess portion of the bolt member, thereby preventing the bolt member from being accessed by a screwdriver.

Abstract: An apparatus for locking a notebook computer on a computer support includes a padlock, an elongated fixing member fastening the padlock to the computer support, and a lock support fastening the padlock to the computer. The computer housing of the computer is of the type having a straight slot and a threaded hole which are formed in the outer surface thereof, and is provided with a built-in bolt member which is engaged within the threaded hole. The lock support has a counterbore through which the bolt member extends. A rib projects from the lock support to engage within the slot of the computer housing so as to prevent rotation of the lock support relative to the computer housing. A shackle hole is formed through the lock support in such a manner that the counterbore and the shackle hole intersect. The shackle of the padlock extends through the shackle hole and covers the head of the bolt member so as to prevent a screwdriver from access to the bolt member.

Abstract: A hitch lock assembly which is readily attachable to a trailer hitch assembly to provide a means for securing a hitch ball latch assembly from unauthorized removal from a hitch ball member. The hitch lock assembly includes a pair of lock pin members operable with a padlock member to provide means for securing the hitch ball latch assembly about the hitch ball member. Each lock pin member is of a high strength steel rod construction having a vertical hitch lock section mountable within aligned holes through a main hitch housing assembly and a ball contact member to insure that these elements are not movable relative to each other to an unlatched condition. The padlock member is removed from the interconnected lock pin members and the hitck lock sections are removed from the aligned holes to achieve an unlatched condition.

Abstract: A locking device for outboard motors has a lock case with a lockable and releasable lock, a bolt casing fixedly attached to the lock case and a clamping bolt in threaded engagement with a hole in the stern bracket of the motor to attach the motor to the stern of a boat. When the locking device is mounted, the head of the clamping bolt is completely enclosed by the lock case and lock. The other end of the bolt engages the stern. The bolt intermediate portion is protected by the bolt casing against manipulation from outside.

Abstract: A trailer hitch cover includes a removable hollow housing and a latch for securing the enclosure to the hitch so that it will remain in place while it is installed on the hitch. The hollow housing has an enclosed body and a tubular neck connected to and protruding from one wall of the enclosed body and being open at its outer end. The neck has a cross sectional size substantially smaller than that of the body. The enclosed body is formed by a pair of identical halves hinged together. Mating parts of the latch are mounted to identical halves of the tubular neck. The halves of the hitch cover are thus releasably secured together in a clam-shell fashion over the hitch so as to be mounted to a portion of the hitch at only the hollow neck of the housing.

Abstract: A lock to prevent theft of a marine propeller assembly having a cylindrical shaped housing on which are exteriorly mounted a series of propeller blades, with the open end of the propeller housing being flared outwardly, the assembly further being mountable to a propeller shaft by means of a retaining nut. The propeller lock substantially covers the open end of the propeller assembly and effectively prevents access to the retaining nut and therefore prevents theft of the assembly. The lock has a flat, generally circular shaped face section, with a relatively short wall depending from the perimeter of the face section. The circular shaped face section is formed of two semi-circular sections with the two semi-circular sections being hinged at an edge so they can be closed to form the circular section or opened to form the two semi-circular sections. The depending relatively short wall is angled at an acute inwardly toward the center of the generally circular shaped face section.

Abstract: A new and improved safety locking device for PVC ball valves and the like comprising, a housing positionable over a PVC ball valve of the type having a on/off handle rotatable about a vertical axis, the handle including a horizontal section positionable in the direction of flow of fluid within coupled pipes when in an open orientation and positionable perpendicular to the direction of flow when in a closed orientation; the housing being formed of a pair of similarly shaped mating halves, each half having a front face and a rear face with each face having a semicircular opening which, when the housing halves are coupled for operation and use, define a circular opening with a central axis coextensive with the axis of the ball valve and pipes coupled with respect thereto, each housing half also having a top face and a bottom face and an exterior side face coupling the front and rear faces but leaving open the interior face with the semicircular openings; the front and rear faces of the housing halves being suffi

Abstract: A trailer hitch coupling anti-theft lock is formed by a platen underlying the ball socket recess of a hitch coupling and having an elongated lock pin projecting vertically through the platen and secured at its innermost end with a flange for impinging a component of the hitch coupling between the flange and the platen. A hollow housing surrounding a shackle-type padlock is provided with an aperture in its wall for slidably receiving the outwardly projecting end portion of the lockpin and biasing the housing wall forming the aperture into an annular groove in the lockpin adjacent the outer surface of the platen in response to inward movement of the lock body relative to its shackle.

Abstract: A housing structure having a first shell and second shell arranged for hinged securement together and including a cooperative lock to permit latching of the first and second shells together to receive a gear shift knob within the shell when secured together preventing access to the gear shift knob release button.