Abstract: A locked cover for surrounding an air condition responsive controller such as a thermostat to prevent the setting from being altered by people unauthorized to do so. This is accomplished by baffles which are opposite the openings in the cover to prevent tools from being inserted through these openings to adjust the control. The baffles have openings through them to permit air to flow to the controller. In one form, the baffles are rigidly secured in position in an otherwise existing type of guard cover. In another form of the invention, there are a plurality of interlocking pieces which can be fitted together and placed within an existing cover to prevent access to the adjustment for the controller. In still another version, the guard cover is modified so that the openings for admission of air are not adjacent the controller, but are spaced outwardly therefrom with the openings through the baffles adjacent the controller.

Abstract: A vehicle and assembly locking and wrenching apparatus is provided by replacement nuts each having an incised front face and arcuate sides parallel to the face, surrounded by cylindrical, annular rings that prevent the gripping and turning of the nuts. Provision is also made for a coupling having a fitting that possesses projected walls complementary to the channels incised on the faces of the nuts, such that upon insertion of a fitting into a nut, engagement is provided for the attachment or removal of the nut by turning. A vehicle-and-assembly locked mode is created when removable assemblies are attached with the replacement fasteners, the coupling is attached to a U-shaped lock around the end opposite to the cylindrical locking mechanism for the U-shaped lock, and the U-shaped lock is locked around the vehicle and a stationary object.

Abstract: A deterrent device for inhibiting unauthorized use and sale of a video cassette recorder having a cassette chamber provided with a chamber opening and a hinged door normally closing said chamber opening in which the device includes a front panel to cover the opening, inwardly projecting members carried on the panel and extending through the chamber opening into the interior of the cassette chamber for moving the door into a position for engagement by said inwardly projecting arms to restrict and prohibit outward movement of the device, and an unlock element carried by the front panel and positioned within the chamber for movement against the door to lift the door from its engagement with the inwardly projecting arms for permitting release and removal of the device from said chamber and opening.

Abstract: A lock for a fuel filler cap has a cylindrical body with an axial keyway formed therein. A tumbler body is rotatably disposed in the cylindrical body. The tumbler mounts a plurality of tumbler pins which are slidable into and out of the keyway. The tumbler carries a locking cam, which is mounted eccentrically with respect to the tumbler axis of rotation. The locking cam is engagable in a friction fit with the interior diameter of the fuel filler neck. The sidewalls of the keyway are angled so as to present a wide mouth opening for the tumbler pins.

Abstract: A center locking device of ball train type for a disc wheel of motor vehicle. This device which is provided inside a cap nut prevents the cap nut from loosening, ensures fastening of the disc and proves to be burglarproof.

Abstract: A security device for mounting an appliance on a support surface including a bracket assembly having separable base and cover sections defining a substantially closed compartment when joined. A lock is provided for securing the joined bracket sections. Adhesive pad is adhered to the support surface and an interengaging loop is provided between the adhesive pad and the base section. The base and cover sections are joined in a sliding fashion generally parallel to the support surface.

Abstract: A security cover lockably engageable with surface mounted apparatus for preventing unauthorized access to the apparatus. The security cover includes a shell with peripheral sides which closely conform to the size of the apparatus over which it fits, and a pair of tangs on the shell edge wedgable between the apparatus and the surface. A key lock is mounted within the outer surface of the protective cover and includes a slotted finger rotatable with the lock cylinder. The fastener with which the apparatus is fixed to the surface is replaced by a double-headed fastener and is engageable with the slotted finger to thereby lock the protective cover to the apparatus. In the alternative, another apparatus screw is replaced with a double-headed fastener and, instead of tangs, a side edge of the cover is slotted for engagement with the second double-headed screw.

Abstract: A security cover for automobile in-dash mounted audio equipment provides a protective theft defeating barrier. The cover includes a lock cylinder adapted for removably securing the cover to internal support rods which are pivotally anchored at one end to a portion of the automobile body. The lock cylinder has a shaft which is threadably received in the other end of the support rod. The cylinder can be rotated by a key for urging the cover into engagement with the dashboard and, thus, encasing the audio equipment.

Abstract: A fuel tank lock for use with a conventional filler neck of an automotive vehicle. The filler neck has a baffle plate formed with a constricted passage normally closed by a biased-shut valve carried by the baffle plate. The valve is forced open when engaged by an unleaded fuel nozzle. The upper end of the filler neck is provided with a conventional fuel tank cap. The fuel tank lock includes a body provided with a key operated lock and a shank that extends through the constricted passage. The lock operates a latch that engages the underside of the baffle plate to prevent unauthorized withdrawal of the lock from the filler neck.

Abstract: The tank fill locking system includes a special coupling adapted to fit upon the top of the tank fill pipe within the manhole. A flat top cap is removably attached to the coupling and includes aligned lock receiving openings when the handle is moved to the closed position. An upper, first, hardened steel plate overfits the fill cap within the manhole and is provided with suitable brackets to engage both the handle and the locks. Preferably, straight shackle locks are employed. A second or inner locking plate secures within the coupling below the flat cap and is also provided with a lock to lock the second plate within the coupling and thereby prevent access to the tank through the fill pipe.

Abstract: An anti-theft mechanism for a handle operated latching mechanism of a removable automobile roof panel of the type in which the handle is located in a recessed well in the panel trim molding and the handle pivots to latch and unlatch the panel. The anti-theft mechanism includes a keeper plate. The keeper plate is curved laterally so that it extends substantially the entire length of the well and conforms closely to the contour of the panel molding to prevent access to the handle in the recessed well. In a modification, the keeper plate forms the top, front and end walls of a housing which is seated in the recessed well and encloses the handle.

Abstract: An enclosed locking system for transportable commercial containers having swinging or roll-up access doors. A main feature of this locking system is that it renders the locked container virtually tamper-proof. Only the key access hole is externally accessible. This locking system may be added to existing containers or incorporated into new units. The system is fitted into the container horizontal frame member positioned at the lower edge of the access doors. The locking system comprises two main sub-assemblies, a cam lock housing and a removable lock assembly. The cam lock housing is bolted or welded to the container frame member, while the lock assembly is removable after a locking bolt therein is disengaged from a portion of the cam lock housing by key operation. When the lock assembly is so removed, it exposes a cam actuator lever which, when pivoted, disengages at least one cam lock from a cavity in the lower horizontal edge of the access doors, allowing entry.

Abstract: An improved lock for a filler cap having a cover adapted to be received within the tank opening with a retaining member connected at the lower face of the cover for cooperating with the wall of the opening to fasten the cap within the opening; the lock is mounted in the cover and extends downwardly toward the retaining member and the retaining member has cooperating means engagable with the lock when the retaining member is in the fastened position. The lock and the cooperating means prevent movement of the retaining member from the fastened position.

Abstract: A protective housing and latch mechanism for securing the protective housing in a position protecting the customary housing for a coin mechanism and coin box. The protective housing permits normal operation of the coin mechanism and is of sufficient strength to resist deformation by sledge hammer blows. The protective housing carries a latch mechanism which locks the protective housing to the original housing for the coin mechanism so as to prevent separation of the two housings. The latch mechanism includes a pivotally mounted latch member which is urged to a latching position and held in that position by a barrel type lock which is disposed in an inaccessible position within a hardened block.

Abstract: A fuel tank lock for use with a conventional filler neck of an automotive vehicle. The filler neck has a baffle plate formed with a constricted passage normally closed by a biased-shut valve carried by the baffle plate. The valve is forced open when engaged by an unleaded fuel nozzle. The upper end of the filler neck is provided with a conventional fuel tank cap. The fuel tank lock includes a body provided with a key operated lock and a shank that extends through the constricted passage. The lock operates a latch that engages the underside of the baffle plate to prevent unauthorized withdrawal of the lock from the filler neck.

Abstract: A device for preventing the theft or unauthorized use of an outboard motor, of the type having a remote fuel tank and a detachable fuel line, locks to the fuel line coupling of the outboard motor, thereby preventing the unauthorized connection of the fuel line to the fuel line coupling so that the motor cannot be used. The device includes a body having recesses or sockets therein for receiving and covering members, including a fuel nipple, which extend from the fuel line coupling; an engaging member that selectively engages with a projection on one of such members, or another facet of the motor or housing; and an arrangement for lockably holding the engaging member in engagement with the projection or facet. One version of the device fits an Evinrude or Johnson outboard motor; another version fits a Mercury outboard motor.

Abstract: A hub cap lock device adapted to be installed upon the air valve of a vehicle wheel tire or upon a threaded stud projecting from the wheel includes a housing with an internal cavity; means are provided at one end of the housing for securing the housing to the wheel part and a cap member is mounted at the opposite end of the housing for engagement with the hub cap; the cap has a flange portion with a dimension slightly greater than a hole in the hub cap; and a lock engagedly received in the housing secures the cap member to the housing thereby preventing unauthorized removal of the hub cap.

Abstract: A device for locking the ailerons and elevators of an aircraft controlled by a wheel-operated longitudinally shiftable and rotatable control column, and, at the same time preventing theft of the navigational instruments and radio equipment mounted on the instrument panel in the cockpit of the plane. The protective device takes the form of a cover plate mounted immediately adjacent the instrument panel by means of upper and lower clamping blocks secured about the control column in such a manner as to prevent unauthorized movements of the column and access to the instruments on the panel. The blocks have complementary semi-cylindrical grooves which clamp about the control column, and one block is fixed to the cover plate while the other has sliding, tongue and groove engagement to couple with said one block and clamp the control column against movement. The pair of blocks are held in clamped arrangement by a padlock whose shackle passes through aligned apertures in the blocks.

Abstract: A device for capping a supplying opening of a fuel-tank of a motor vehicle or the like, comprises a capping outer casing of T-shaped cross section, and cylinder-lock means centrally mounted inside the outer casing for holding and releasing a locking condition, wherein although a distance frictionally driven by respective projections mounted on a rotary member against resilient force is fully, automatically relaxed to permit respective locking bars to be projected for locking and thus, the device is locked when a key fitted in cylinder-lock means is left in a free condition, the key fitted is arranged to be not detachable from cylinder-lock means without further manual actuation thereof in the same direction of the free returning direction thereof.

Abstract: A quick disconnect, lockable mounting for a C.B. (citizens band) antenna, or other type of antenna, which permits removing the antenna whenever desired simply by unlocking a key lock device, and taking off a cap carrying the antenna. Yet, when the cap is in position, it cannot be removed because the lock member securely holds it in position.The problem associated with breaking and stealing C.B. antennas (and radios, which are indicated as being present in a vehicle by the full antennas) has increased substantially, and the present device permits not only the quick disconnect and removal of the antenna, but the locking of the antenna to discourage thieves from attempting such removal.

Abstract: A lockable dip stick assembly for an oil filling spout comprises an elastomeric stopper disposed between an outer compression cap and an inner compression plate which carries a dip stick. A stud extends coaxially through the cap and stopper and threadably engages the compression plate. A bell housing supported for rotation on the outer end of the stud contains a key operated lock cylinder which has a bolt radially movable between uncoupled and coupled positions corresponding, respectively, to locked and unlocked positions of the lock cylinder. In a coupled position the bolt is connected in driving relation to a drive cup mounted in fixed position on the outer end of the stud and enclosed within the housing. Rotation of the key to and beyond an unlocked position causes rotation of the stud relative to the compression plate.

Abstract: A locking mechanism prevents a conventional interlocking towing connection between a tractor and trailer, the locking mechanism includes a main body of forged steel, a king pin chamber and a secondary chamber opening into and situated at an angle with respect to the king pin chamber, a rotating lock bar mounted in the secondary chamber and having an end portion which may be rotated into a position adjacent to the reduced diameter portion of the king pin to prevent removal of the main body housing from the king pin, an increased diameter of the lock bar situating it within the main body housing thereby preventing the lock bar from being physically moved along its longitudinal axis in spite of the removal of a shouldered lock mechanism, the only means of removing the king pin lock being a 180.degree. rotation of the lock bar.

Abstract: A security cap for the filler conduit of a motor vehicle fuel tank including a lock body provided with a key-operable latch. The lock body is completely accommodated within the upper end of the filler conduit, and locked in place beneath the conventional screw cover of the conduit. The upper face of the lock body is smooth and unbroken, and provided with a key slot.