Abstract: A door lock for a motor vehicle provided with a body having one or more doors, wherein the lock comprises a locking cylinder accommodated in or near a window pillar. The lock itself and inner and outer handles for operating the lock are located in a lower part of the door and are connected to the locking cylinder by a locking lever. A vertical separation is thus provided between the locking cylinder and the lock itself.

Abstract: An antiremoval device for a locking mechanism for a steering column lock for motor vehicles is disclosed. A fastening member extending through releasably connected housing parts, which prevent tampering with the locking parts, engages additionally into a displaceable catch of the locking parts when the catch is in a locking position with the steering column to thereby prevent the fastening member from being moved to a position releasing the housing parts.

Abstract: A central locking system for motor vehicles, not only doors and tailgate and gas tank-cap lids, but also several flaps of containers arranged in the passenger space (gloveboxes, small luggage compartments). These locks can be released and locked jointly by a unitary switch signal, or for specific conditions, both the doors and lids and the flaps can respectively be locked and released separately in groups.

Abstract: An apparatus for preventing unauthorized intentional or accidental uncoupling of a trailer from a towed vehicle. A tow ball characterized by a flared shoulder is mounted on a tow bar. A bushing spaces the shoulder away from the tow bar and provides a cylindrical support for a bracket. The bracket is free to rotate about the bushing. A cap attached to the bracket prevents disengagement of the trailer from the towing vehicle.

Abstract: An apparatus for protecting a console gearshift and preventing theft of a radio in a motor vehicle is provided and consists of a housing disposed over the console gearshift so that button on the console gearshift cannot be depressed to release the console gearshift out of a parked position, thus preventing an unauthorized person from driving the motor vehicle away. A C-shaped bracket is mounted to the housing for blocking the radio so as to prevent an unauthorized removal of the radio from the motor vehicle.

Abstract: This automotive steering wheel lock is made up of a rod and a cartridge connected with the rod. The cartridge consists of an upper half cartridge and a lower half cartridge that capture hold of the steering wheel between them and are locked with a lock cylinder and a lock base set separately in the two half cartridges when said half cartridges are closed together. To open the lock, a key is inserted and turned in the keyhole of the lock cylinder. The bottom of the rod can be blocked by the driver's seat or something inside the car or by a thief's body making it difficult to handle the steering wheel, even if the steering wheel should be turned around with the lock locked in an attempt to steal the car.

Abstract: A locking device to secure the rear door and tailgate of a truck equipped with a canopy and a rear bumper comprising an elongated member having a loop at the upper end for securing the handle apparatus of a truck canopy and a lower member with circular orifices that extends vertically through an orifice in the bumper. A locking means is accomplished by the use of a padlock in conjunction with the circular orifices in the lower member of the locking device.

Abstract: An automobile ignition lock cover for steering column-mounted ignition locks includes a hollow cover housing having an open side to fit over the ignition lock. An L-shaped bracket has a first portion disposed inside the housing and fixed to the back wall of the housing. It also has a second, outside bracket portion that extends out through a slot in the lower portion of the cover. A chain is attached to the upper end of the cover. The free end of the chain is attached to the U-shaped shackle of an adjustable shackle lock assembly. The chain wraps around the steering column, and the shackle legs are inserted through one or a pair of holes in the outside bracket portion and locked snugly in place in the lock housing, which bears against the opposite side of the bracket or is attached thereto. The L-portion of the bracket is disposed inside the cover and extends forward under the ignition lock, to prevent the cover from being rotated.

Abstract: An apparatus for preventing the unauthorized use of a vehicle. The apparatus includes main column unit half shells and column base unit half shells having interlocking joint structure for fixing the main column unit and base column unit to a steering column unit. Locking means is provided to lock the main column unit to the steering column once they are affixed thereto.

Abstract: A system for installation in mechanized vehicles which have an hydraulic brake system prevents the unauthorized operation of such vehicles and includes a valve of a special construction which comprises a housing provided with inlet ports and outlet ports for the hydraulic fluid, and an inner core member which is movable within the housing and is provided with bores which correspond with the ports in the housing forming a passage. Further, the valve includes at least one by-pass passage provided with a one way valve, the inner core member is movable rotatively or axially within the housing, and is connected to a key operated lock.

Abstract: A releasable locking device for preventing premature coupling of a truck tractor's air braking glad hand to a truck trailer's air braking glad hand is disclosed. The device includes a set of jaws adapted to interlock with each other and the non air-connecting end of a glad hand. A channel integral with the set of jaws houses a barrel lock to effect control of the interlocking of the set of jaws with the non air-connecting end of the glad hand so that, when the set of jaws is interlocked with each other and the non air-connecting end of a glad hand, an operator may not prematurely couple a truck tractor's air brakes to a truck trailer's air brakes.

Abstract: An anti-theft device for a marine drive unit includes a cupped member for location around a threaded fastener which secures the drive unit in place so as to enable a blocking device to be secured in position to block access to the threaded fastener and thereby preclude unauthorized removal of the threaded fastener and the drive unit, the cupped member having outer surfaces lying in mutually perpendicular planes forming a corner complementary to a corner of the drive unit to preclude rotation of the cupped member when seated in the corner of the drive unit in order further to prevent unauthorized rotation of the threaded fastener.

Abstract: A clutch is adapted to be interposed between an electric motor (1) and a gear train (5) for driving a screw on which is mounted a sleeve controlling a locking element. The clutch comprises weights (11) disposed in a hollow member (3) in a position radially of an output shaft (2) of the motor (1), said weights being biased by return springs (21) toward a de-clutched position of rest and being capable of being driven by the rotation of the shaft (2) to a clutching position in which they are engaged with the member (3). The weights (11) are mounted in a support constituted by a hub (12) defining a cavity (15) for the weights and by a cover (16) which closes said cavity (15) and is fixed to the hub (12). The cover (16) is adapted to permit the radial displacement of the weights (11) toward the member (3) under the effect of centrifugal force. This structure facilitates the placing in position of the weights and their assembly by an automatic machine.

Abstract: A safety and security locking device is described for use with pneumatic brake air couplings to prevent access to the air coupling opening for applying air pressure to release the brake. First and second elongate arms are pivotally joined at a pivot access between the ends for pivoting motion between an open position and a clamping locking position. One arm is formed at one end with a flange or cover for covering engagement over the air coupling opening. A locking guide or projection extends from the flange within the perimeter of the flange and is inserted in the opening for guiding the flange or cover over the air coupling opening or other inlet orifice. The second arm is formed with a brace at the same end for engaging the air coupling or orifice on the opposite side from the opening in clamping opposition with the flange.

Abstract: A portable steering column locking apparatus in two pieces for surrounding the steering column of an automotive vehicle and specifically enclosing the ignition switch and the skin of the steering column beneath which the ignition control rod is located. The cylinder operates in a bolt wing and a striker wing part that cannot be pried apart because of housing projections fitting respectively within side recesses in the wings. The locking cylinder has a carbon steel crosspiece deadbolt operating within an internal "F" groove in the bolt wing and therefore cannot be defeated by common tools used to extract cylinder tools. The hinge of the housing pieces is sealed by welding against access.

Abstract: An apparatus for preventing the unauthorized use of a vehicle. The apparatus includes main column unit half shells and column base unit half shells having interlocking joint structure for fixing the main column unit and base column unit to a steering column unit. Locking means is provided to lock the main column unit to the steering column once they are affixed thereto.

Abstract: An anti-theft cover assembly for use on the interior panel of an automobile door of the type including a door locking mechanism actuable by an actuator positioned in an opening in the interior door panel. The cover assembly includes a rigid cover plate sized and configured to fit over and cover the actuator. The cover plate includes a generally rectangular main body portion, a lip portion extending around the main body portion and a locator flange portion extending inwardly from the top edge of the main body portion and sized to fit within a recess in the door panel of the vehicle to provide a piloting action for the cover plate. A first magnetic tape is secured to the inner face of the main body portion of the cover plate and a second magnetic tape is secured to the door panel in surrounding relation to the actuator. The magnetic tape on the door panel fits snuggly within the lip portion of the cover with the cover in its anti-theft position.

Abstract: An antitheft device for a vehicle that includes a deadbolt mounted on the vehicle door for providing security to the vehicle door. The deadbolt operates a normally closed switch which is in series circuitry with the vehicle battery, starter and ignition key switch. The deadbolt and switch are arranged so that the switch is open when the deadbolt is in locked position and the switch is closed when the deadbolt is in unlocked position.

Abstract: Disclosed is a locking device for securing an unattached trailer. The device includes an elongate, flat and ductile bar, along which two 90.degree. transverse bends are made, forming a medial base and parallel and opposed first and second arms. A locking pin is mounted to the base and extends in the direction of the arms, and first and second retainer openings are formed near the free end of the first and second arm, respectively, and beyond the locking pin. The device is secured to a brake line coupler by insertion of the locking pin into the air passage recess of the coupler so that the arms extend beyond the coupler, then by securing either padlock shackle or a retaining bolt through the first and second openings.

Abstract: A member formed of saw and bolt cutter resistant, hardened steel which is insertable between the arms of the U-joint of a truck steering system and locked in place by one or more padlocks. So installed, the member prevents steering of the truck, thereby preventing theft of the truck.

Abstract: A vehicle immobilization device comprises a pair of chocks (1 and 2) for abutting a vehicle wheel on either side (in a direction of rotation) of its ground contact point, a top hook (7) for hooking over the wheel at a point over the ground contact point, a chock arm (3, 4) secured to each chock, the chock arms being relatively movable to adjust the separation of the chocks, and an adjustable length stem (5) for connecting the top hook to the chock arms and including a lock (6) to arms (3 and 4) include oppositely facing channels (9 and 10) with complementary corrugated strips (41 and 42) which are interengageable to prevent relative movement of the chock arms at one of a plurality of positions in which the stem can be locked to the chock arms, by movement normal to the direction of chock separation adjustment.

Abstract: A hydraulic wheel brake device is provided for connection between the master cylinder and the wheel brake cylinders in the brake fluid line. The device includes a lock housing connected to a hydraulic cylinder wherein the hydraulic cylinder includes a fluid chamber having an inlet and outlet in fluid communication with the chamber. A valve seat is located over the inlet in the fluid chamber and a spring is disposed in the chamber having a steel ball held therein. A lock and rotary cam mechanism are located within the lock housing wherein rotation of the lock rotates the cam mechanism thrusting a rod connected between the rotary cam mechanism and the spring. The rod forces the spring to compress which seats the ball against the valve seat restricting fluid flow to the brakes thereby locking the fluid brake system.

Abstract: An anti-theft locking device is described for immobilizing a foot pedal assembly normally necessary for operation of an automobile. A first rigid plate, hingably attached to the floor of the automobile adjacent to the foot pedal assembly, can be moved from a stored position on the floor to an immobilizing position blocking access to the foot pedal assembly. A second rigid plate, hingably attached to one end of the first rigid plate, can be folded under the first one in the stored position but, in operation of the device, serves to brace the first plate in the immobilizing position. The second plate is locked in the brace position by means such as a padlock secured to a hoop on the floor of the automobile projecting through an aperture on said plate.The device can be installed as original equipment in an automobile or can be retrofitted thereto at any time during the life of the automobile.

Abstract: A driving device for a reciprocating control member, preferably for a keyboard in a lock for doors of a motor vehicle, has a reversible electric motor controlled by a switching device. The electric motor controls the control member via a reduction gear. The switching device includes a stop member connected for joint rotation to the output of the reduction gear and having a convex stop surface. A contact disc is provided with two adjacent concave recesses cooperating with the stop member. A tension spring couples the contact disc to the transmission gears so as to oscillate the contact disc from one limit position in which the stop member is in engagement with one concave surface into another limit position in which the stop member is brought in engagement with the other concave stop surface.

Abstract: A motor vehicle theft deterring device designed to prevent access to the levers which control the operating of the door lock in a vehicle door. A cover strip of rigid material of predetermined length and width to substantially cover the space between the vehicle window glass and the outside panel of the vehicle door is formed with a downwardly extending support strip and a mounting plate at a right angle to one edge of the cover strip, the plate being attached to the sash of the automobile window to prevent the insertion of a rod or similar device to release the lock actuating levers in the vehicle door. In a modified form of the invention, an electrical switch is positioned in the mounting plate and is electrically connected to the horn relay to cause the horn to blow continuously in the lock cover is tampered with and the horn circuit is grounded by movement of the switch.

Abstract: A protective jacket is disclosed for the steering column of an automotive vehicle of the type in which a breakable cover encloses an internally mounted steering wheel locking means, and has ignition key means mounted on the opposite side of the turn signal lever. The jacket includes a pair of jacket members hinged together so that they can be readily mounted on the steering wheel column. A padlock connects the two members together so that the protective jacket can be removed when the vehicle is sold, however, it normally is locked in position permitting the user to operate both the ignition system as well as the turn signal lever.

Abstract: A device for preventing unauthorized intentional uncoupling or accidental uncoupling of a trailer from a towing vehicle. The threaded shaft of the ball slides through an upper housing allowing the upper housing to contain the shoulder of the ball so that the ball and upper housing can be mounted to a tow bar by inserting the threaded shaft of the tow ball through the aperture in a tow bar and then screwing a flanged nut onto the threaded shaft. A lower housing is then placed around the flanged nut and bolted to the upper housing so that the tow bar and the flanged portion of the flanged nut are sandwiched between the upper and lower housings. There is a yoke which encircles the shank of the tow ball, the dimensions of which make it impossible for it to slide over the ball. There is a locking hat which is placed over the trailer tongue ball socket having legs extending vertically downward allowing it to be locked to the yoke.

Abstract: A system to prevent an automobile door from being locked while the key is in the ignition switch and the driver is outside comprising an electric circuit including a switch on the ignition lock that is closed when the key is in the lock, a switch on the door that is closed when the door is open and a switch on the door lock mechanism that is closed when the lock mechanism is moved toward the locked position; the closing of all three switches activating a solenoid which moves the lock mechanism to the unlocked position.

Abstract: An apparatus for securing a vehicle parked in a selected location to prevent its theft. The apparatus includes a stanchion supporting a pivotally mounted bumper engaging arm. The arm includes a portion projecting outwardly of the stanchion toward the vehicle when the vehicle is to be locked in place. In this position of the arm, an extension on the end of the arm extends upwardly to fit behind the vehicle bumper for thereby preventing movement of the vehicle away from the stanchion. A drive is provided for driving the arm between an inoperative position and an operative position for securing the vehicle. A coin operated arrangement is employed for energizing the drive after the vehicle is moved into position adjacent the stanchion.

Abstract: Anti-theft apparatus is described for use in motor vehicles which include a vacuum source generating a vacuum when the vehicle engine is running. The anti-theft apparatus comprises a disabling device for disabling normal operation of the vehicle, a releasing device for releasing the latter to permit normal operation of the vehicle, and a vacuum control device which includes a manipulatable member, in the form of a removable piston-key, effective to connect the vacuum source to the releasing device, to cause it to release the disabling device and thereby to permit normal operation of the vehicle, only when the piston-key is in a preselected position in the vacuum control device. In one form, the disabling device acts on the gearshift lever locking it in its park position, and in a second form it acts on the fuel feed line blocking the full flow of fuel to the engine.

Abstract: A steering column lock for heavy-duty vehicle steering columns includes a one-piece substantially T-shaped member having a main stem portion and a cross bar portion. The wheels of the vehicle are turned and the stem portion is inserted through the opening in the universal joint in the steering column. The cross bar portion interferes with adjacent structure such as the steering column support. A heavy-duty padlock is inserted through an opening toward the end of the stem portion opposite the cross bar portion. A crown is provided at the top of the cross bar portion to cause further interference when trying to rotate the steering column.

Abstract: The central locking installation for motor vehicle door locks blocks the locking element of the door lock by means of an additional, separately controllable blocking member. The locking element and the blocking member are driven by separate electrical drives which are connected into mutually parallel-connected current paths of one common drive current circuit. The drive direction of the two drives is controlled by common switches of a pole-changing circuit which reverses the current direction. Into the current path of the drives of the blocking member there is connected a control switch by way of which these drives can be switched on selectively. In the unlocking direction and the unblocking or releasing direction a time control system controllable by means of the door key in the unlocking of the door switches on the drives of the locking element and of the blocking member simultaneously. In the locking of the door lock only the drive of the locking element is switched on in its locking direction.

Abstract: An automobile security device for protecting an ignition lock mounted in an automobile steering column includes a hollow cover to fit over the lock on to the steering column, and a flexible tension-bearing element, preferably a chain, for securing the cover to the column. The element is selectively engaged by a bolt mechanism linearly displaceable by a cam, the cam is turn mounted on and rotatable with the rotatable element of a lock mounted in the cover. Alternatively, a padlock is mounted to the cover such that the padlock housing is disposed on the outside of the cover, and may be unlocked to attach the chain to the padlock shackle.

Abstract: A vehicle such as an automobile includes various auxiliary devices for implementing auxiliary functions such as electrical equipment, windows, doors, a parking brake, a transmission and the like, in addition to a principal scheme for a running operation of the vehicle. The vehicle also includes two alarms, one being provided for raising an alarm inside the vehicle and the other being provided for raising an alarm outside the vehicle. When a driver leaves the vehicle after he ends the drive, a predetermined undesired state of various auxiliary devices, such as a switch for the circuit of electrical equipment being kept turned on, the window or door being not fully closed, the parking brake being not put on and so on is detected, when the key switch is turned off. Upon detection of such undesired state, first the inside alarm is energized and after a predetermined time period the outside alarm is energized.

Abstract: An automobile security device for protecting an ignition lock mounted in an automobile steering column. The device includes a hollow cover to fit over the lock on the steering column, and a flexible tension-bearing element, preferably a link chain, for securing the cover to the column. The element is selectively engaged by a bolt mechanism linearly displaceable by a cam the cam in turn mounted on and rotatable with the rotatable element of a lock mounted in the cover.

Abstract: A spring-loaded lever assembly for engaging an ignition related cam or slide for preventing the return of a key and ignition to a key release position, without previously setting the parking brake. For dash-mounted ignitions, a cylinder related cam is engaged via a spring-loaded lock lever head and cable actuated lock lever handle. For column ignitions, the cable actuated lock lever handle and head act in concert with a key actuated linear slide. A buzzer and warning light, in turn, warn of the failure to set the parking brake.

Abstract: The central locking system adapted especially to motor vehicles comprises a plurality of electric locking drives and a time control circuit triggerable by at least one control switch in switching over from a first switch position to a second switch position. The time control circuit switches on the locking drives for a predetermined time duration in a predetermined drive direction. A switch signal generator controlled by the control switch generates a first two-level control signal the control levels of which represent the switch positions of the control switch. The switch signal generator in the switching over of the control switch from the first switch position into the second switch position triggers a ramp signal generator which delivers a ramp signal varying in time with constant direction from a predetermined initial level.

Abstract: A system is provided for establishing and controlling the attitude of a driver's seat and providing a door lock/unlock control of a vehicle. The vehicle carries an electronic control unit in which driver's identification codes and attitude data for establishing a driver's seat and mirrors are previously stored. A code signal is transmitted from a radio emitter, and is received by a radio receiver mounted on the vehicle. The control unit decodes the received code, and upon finding that it corresponds to one of the codes stored, unlocks the door of the vehicle and automatically establishes the attitude of the seat and the mirrors in accordance with data which is stored in correspondance to the code.

Abstract: A central door-lock system has a plurality of door latches each including a detent displaceable between an open position securing the respective door to the respective doorpost and a closed position permitting the respective door to separate from the respective doorpost, a manual door-opening handle, mechanism including a primary latch member connected to the handle and connectable to the detent and movable between a lock position preventing this handle from displacing the detent between its open and closed positions and an unlock position permitting the handle to displace the detent between the open and closed positions, and a secondary latch member displaceable between a lock position urging the primary latch member into the respective lock position while permitting the primary latch member to move into the respective unlock position, an unlock position permitting the primary latch member to move freely between the respective lock and unlock positions, and an antitheft position positively holding the primar

Abstract: A luggage rack of the type having a tracked slat has a locking device associated therewith. The locking device is removably mounted to the end of the slat. The locking device includes a cylinder lock or similar locking member which urges a wedge member into a locking mode to prevent the locking device from being removed from the end of the slat. The locking device prevents unauthorized removal of article carriers from the slat.

Abstract: A central vehicle door-lock system has several door latches each including a detent movable between a lock position securing the door closed and an unlock position allowing the door to be opened by means of a mechanism inside the door latch. Each of these latches is associated with a servoactuator having an actuator that is engaged via this mechanism with the respective detent and that is in turn moved by an operator. This operator, therefore, can move the actuator and with it the latch detent between lock and unlock positions, and the operator itself is movable by a servomotor into an antitheft position. A lock pawl on the actuator can, in the lock position of the actuator and in the antitheft position of the operator, move from a freeing position permitting displacement of the actuator from the lock to the unlock position into a blocking position preventing such displacement to lock up the entire latch.

Abstract: An improved vehicle lock immobilizes the shaft of a single foot pedal assembly of the vehicle is disclosed. The vehicle lock comprises a base which contacts the floor of the vehicle and fits between the floor and the shaft of the pedal. Two wall members extend upwardly from one end of the base and together with the base form a cradle for the shaft. A lock mechanism, e.g., a pad-lock, passes through one or more holes in each of the walls to thereby lock the shaft in the cradled position and render the pedal assembly and vehicle inoperative.

Abstract: An anti-theft device for a vehicle having an internal combustion engine provided with an electrical circuit constituting an ignition or engine-heating circuit. The device includes a first circuit member having an output, a second circuit member having an input, the first and second circuit members being parts of the electrical circuit. A plurality of magnetic switches are disposed in a housing. One or more of the magnetic switches are electrically connected in series between the output of the first circuit member and the input of the second circuit member, all remaining ones of magnetic switches are connected between the input of said second circuit member or the output of the first circuit member and ground of the electrical circuit. One or more magnets are carried on a support in the form of a key which can be inserted into a slot in the housing.

Abstract: A lock plug for use with a glad hand coupler of the air brake line of a tractor - trailer. The lock plug is insertable into and held in place locked within the air passage of the glad hand coupler to prevent unauthorized hookup of the plugged glad hand coupler with a mating glad hand coupler.

Abstract: A device for closing the ignition circuit of a vehicle or automobile thus permitting the starting of the motor. The device employs a pair of key operated locking ignition switches located on either side of the steering column. A source of electrical energy connects to the pair of switches and travels to the ignition circuit of an automobile.

Abstract: A frame into which a forward end of an automotive vehicle is driven, and secured, so as to prevent vehicle theft, the frame including adjustable bars, so as to clamp snugly against the vehicle, and, in one design, also including rollers against the vehicle wheels, that prevent the vehicle from riding off the frame.

Abstract: For automotive use, an inexpensive gasoline tank theft guard adjustably attached so that owner may integrate the guard or not by choice of a quick manual setting. The guard utilizes a gasoline fill-tube cover, a lockable body-entry panel, and the owner's key and perhaps his license plate for intercepting access to the gasoline tank when cover and panel are proximate and closed, and for protection against gasoline theft when entry panel is locked. By way of example, a pin (10, FIGS. 3-6), pivotally anchored inside gasoline fill-tube cover (6) engages a receptacle (9) in the trunk lid (2) when the lid closes (FIG. 5). Owner's key (1) unlocks lid to free pin. Anchor heads (4, FIG. 3) are concealed behind mounted license plate (7, FIG. 4) and are designed to frustrate tampering. Stability and rattle of the adjustable pin are controlled manually (FIG. 7) and automatically (FIG. 8). Pin (10) pivots manually aside to disconnect the system.

Abstract: A locking device engageable in mating relationship with a glad hand brake line coupler of a semi-trailer disconnected from its tractor is disclosed. A depressible lock mechanism supported by a housing of the locking device is connected to a plunger which is extended into an air passage opening in a heavy rubber grommet of the glad hand coupler when the lock mechanism is depressed. Once the plunger is extended, it can only be retracted by means of a key which unlocks the depressible lock mechanism. When the locking device is matingly engaged with the glad hand coupler, it is prevented from vertical displacement from the glad hand connector by engagement of tongues and corresponding tongue receiving recesses of the glad hand and the locking device. The locking device is prevented from lateral or rotational displacement with respect to the glad hand coupler by the engagement of the plunger with the inside walls of the air passage opening in the rubber grommet.

Abstract: A theft-prevention system for a motor vehicle wherein at least one cylinder lock having a closing cylinder and a switching mechanism that is relatively translatable with respect to the closing cylinder for actuating and deactuating the cylinder lock is engageable by a first key which is able to actuate and deactuate only the cylinder lock, and a second key which is engageable with the cylinder lock for actuating and deactuating both the closing cylinder and at least one auxiliary system for deterring the theft of the vehicle. Actuation of the auxiliary system by the second key engages a locking mechanism preventing operation of the cylinder lock.

Abstract: An anti-theft device for positioning over the ignition housing of a vehicle's steering column to protect ignition and anti-theft components contained therein is disclosed. This device has armored guard means including a band which extends around the ignition housing, a cylindrical portion to protect the ignition key cylinder housing, and a cover with an ignition key slot therethrough. Means for fastening the armored guard onto the steering column in a permanent manner are also provided. This anti-theft device is passive, aesthetically pleasing, economical to manufacture, has an extremely low likelihood of mechanical failure and yet is capable of providing outstanding protection against forced entry into the ignition and anti-theft components of a vehicle.