Abstract: A passage (1) with monitored authorization of access is provided with a closure device using a barrier (2) hinged about a vertical axis .gamma.. The passage includes at least one such barrier (2) with an end thereof situated adjacent to the vertical axis .gamma.. Rectilinear guides (6 to 9) guide the axis .gamma. along a line .DELTA. parallel to the through direction of the passage. The barrier is further provided with a hinged link (4) which is hinged firstly about a vertical axis .gamma..sub.1 situated along the barrier (2), and secondly about a vertical axis .gamma..sub.2 situated in the vicinity of the line .DELTA.. A drive system (10 to 13, 22 to 24) opens and closes the passage by causing the vertical axis .gamma. to slide along the line .DELTA.. The vertical axis .gamma. is situated at a distance l from the line .DELTA.. The length of the barrier (2) between the vertical axis .gamma. and the vertical axis .gamma..sub. 1 is equal to L. The passage is characterized in that the length L.sub.

Abstract: A security post to be located within an entry to control vehicular access and comprising a tubular member (10) installed below ground with its upper end generally level with the surface, and having a hinged lid (14). A post (17) is slidable vertically within the tubular member (10) and is lockable by means of a key operated lockable handle (18, 19) which rotates to locate a locking bar in one of two vertically spaced slots (15, 16) to lock the post in a lowered or raised position whereby the post may be stowed away below ground when not required.

Abstract: Apparatus for controlling the direction of traffic flow wherein a plurality of rotationally mounted levers have a free end extending upwardly from the road surface. The levers are provided with removable spikes which rotate therewith to damage tires when the levers are rotated in one direction. The free end of each lever is provided with a rotationally mounted low friction contact member which contacts the adjacent surface of the tire and moves along the surface thereof. Envelopment of the free end of the lever by the tire and the coerced rotation thereof in the wrong direction do not occur. As a result, the failure of the corresponding spike to damage a tire when the vehicle is moving in the wrong direction is thereby avoided.

Abstract: A removable barrier adapted to co-operate with a concrete median barrier of a roadway to form, in situ, a barrier between a vehicle travelling in one direction on the roadway and a vehicle travelling in another direction, wherein:the removable barrier is adapted for movement such that, when desirable, the vehicle travelling in the one direction can transgress the barrier and travel on the opposite side of the roadway, and further whereinthe removable barrier comprises at least one shell conforming substantially to the outer shape of the concrete median barrier and is adapted for sliding movement relative to the concrete median barrier.

Abstract: A parking barrier apparatus for restricting ingress into and egress from a parking space is disclosed. The parking barrier includes an elongate, substantially planar base member adapted to be secured onto the ground of a parking space. An elongate carrying cover of is pivotally connected to the base member and movable from a first, upright position into a second, prone position. The carrying cover includes a substantially U-configured channel portion that is inverted and covers a portion of the base member when the carrying cover is upright. A barrier member is secured to the elongate cover and extends outward therefrom. A lock mechanism is secured within the channel of the carrying cover for engaging and locking the cover in the first, raised position. The lock mechanism remains substantially enclosed by the carrying cover and base member when the carrying cover is upright to prevent tampering with the lock mechanism.

Abstract: A parking space barrier comprises a stationary base for anchoring to the ground of a parking space and a moveable pylon attached to the base member by an extensible cable. The pylon comprises a cushioned peripheral portion upstanding from a carriage containing a spring motor attached to one end of the cable. A wirelessly operated lock remotely controlled by the car driver secures the carriage to the base adjacent the entrance to the parking space. A car entering the parking space engages the cushioned peripheral portion and pushes the pylon before it across the parking space to a vehicle admitting position, the cable extending under the car and winding the spring motor so that the pylon will be drawn back by the spring motor and cable with the car when reversing out of the parking space. A manually operable arresting device is provided to maintain the pylon in the vehicle admitting position remote from the base member, if required.

Abstract: A pneumatically-powered traffic control gate is disclosed. This gate contains a cylinder and piston for raising and lowering its gate arm, a means for adjusting the alignment of the traffic gate arm, a pneumatic means for sensing the presence of an obstruction to the movement of said traffic gate arm, and a means for reversing the movement of the piston and the gate once the obstruction has been sensed.

Abstract: Anti-theft device with extractable armored column for protecting areas in general and for barring doors and the like, having a steel base which has the shape of an at least partially box-like body and which has walls which are at least partially covered with plates of a drill-proof metallic alloy or the like; the base is horizontally buriably in the walking surface and is centrally provided with a through opening; a vertical prism-shaped container made of steel is rigidly applied to the opening, has both longitudinal and transverse reinforcement ridges and is completely embeddable below the walking surface; an armored column is telescopically and removably inserted in the container, is at least partially internally filled with material which has high resistance to abrasion and high hardness and has means for its anchoring to locking means present within the base.

Abstract: A post is adapted to be raised to an active position in front of a vehicle being serviced from a pit beneath the vehicle, the post serving as a barrier to guard against injury and property damage in the event the vehicle suddenly lurches forwardly. After the vehicle has been serviced, the post may be lowered to a stored position in the pit to enable the vehicle to be driven forwardly from the service area.

Abstract: A wrapper for parking area gates or construction barriers is disclosed. The unique wrapper consists of an elongate piece of flexible generally paper-like material of sufficient length and width to wrap around a barrier arm. Indicia of diagonally spaced blocks of contrasting colours are affixed to the wrapper in a parallel manner. When a barrier member is replaced, the covering is wrapped about the barrier member and secured to itself thereby producing instantly a new barrier for re-operation of the parking area or protection of the construction site. The invention eliminates the cost of expensive cuts of wood and meticulous painting each time the barrier is broken.

Abstract: Improved devices for controlling vehicular traffic are disclosed. The present invention permits the installation of collapsible bollards or posts to create a barrier to vehicular traffic. The bollards disclosed use an internal latch bar and a hinged connection allowing them to be collapsed using an ordinary fire hydrant wrench, thereby permitting access by fire and emergency vehicles to the areas protected by the bollards. Moreover, in the preferred embodiment, a novel spring-loaded latch bar, entirely contained within the bollard and protected from the elements, permits the bollards of the present invention to be reset in a locked position without the use of a hydrant wrench or other tools. Other embodiments disclose how the bollard may be re-locked without the use of tools when the bollard is returned to an obstructing position.

Abstract: Gate, particularly for entrance ways, roads, or the like, with a barrier which can be pivoted in such a way that the tip of the barrier executes a purely horizontal motion when entering its closed position and that, when the gate is closed, the tip of the barrier is positioned within a fully closed casing to protect against unauthorized opening of the gate.

Abstract: The present vehicle speed bump device allows a vehicle to roll over the device slowly with little resistance. However, the device includes a lock which operates to lock the speed bump of the device in operative position when contacted by a vehicle wheel moving at a higher speed, thereby causing an appreciable bump effect. The device includes a frame having a transverse bump bar at its upper end and a counterweight bar at its lower end. The frame is rotatably mounted by transverse axles secured to opposite sides of an open-topped container. In the resting position, the bump bar projects up above the open top. A lock arm projects rearwardly from and is rigidly interconnected to the frame for rotation therewith. It bears a vertical pendulum arm which rotates forwardly and rearwardly and which has a friction block at its lower end. A second friction block is mounted in the container below and to the rear of the first friction block.

Abstract: A parking barrier that is remotely controlled and includes a vertically, pivotally mounted post having an L-shaped arm secured at one end thereof to the post and projecting outwardly therefrom, lying in a generally horizontal plane. The post is positioned at or near one of the boundary lines of a defined parking space and the post may be moved through an arc from one position to another wherein the L-shaped arm, in one position, projects into the parking space preventing unauthorized parties from using that space for parking a vehicle. In the other position, the L-shaped arm overlies two adjoining boundary lines or in proximity thereto, allowing a vehicle to park in the designated space. The pivotally mounted post is mounted on a base that is weighted down by a curb stone so that no modification need be needed to the surface of the parking area. The curb stone is detachably connected (by suitable security devices) to the base plate thereby making the unit itself portable for moving from one site to another.

Abstract: A three-piece, compact wireless railroad grade crossing motorist warning device comprising: a locomotive mounted transceiver which simultaneously communicates (upon close proximity) with a similar transceiver mounted at railroad grade crossing, and motor vehicles equipped with sympathetic receivers. Upon signal receipt verification, the grade crossing transceiver emits a coded radio signal to local motoring public sympathetic receivers. Upon signal reception, an audio/visual alert is presented to the motor vehicle operator, alerting the motor vehicle operator to the locomotive-occupied railroad crossing. Additionally, a contact verification display is displayed to the operator of the locomotive, upon activation of the grade site transceiver.

Abstract: A barrier post (1) for closing a variety of access paths as well as parking lots and parking spaces in particularly easy to use and entails no risk to the user, for example by the presence of clamping points, because the swivel hinge (4) is divided into a lower and an upper hinge (6, 7). The lower hinge (6) constitutes the link between the base (13) and the displacement shaft (11) and then only after that with the tube (5) whereas the upper hinge (7) is the link between base (3) and tube (5). The displacement shaft (11) is connected, either directly through its movement nut (15) or indirectly through a guide (8), a sliding guide (9) and movement unit (15), with the tube (5) and raises or lowers the tube by appropriate rotation. This is achieved by means of a motor (13) with drive (12) accommodated in the tube (5), but which the movement nut (15) together with the whole tube (15) is pivoted upwards or downwards, depending on the direction of rotation.

Abstract: Each of a series of parallel stalls in dairy parlor includes a swinging entry gate having on one side of its hinge axis a major portion, normally blocking the stall mouth. A minor portion of the gate, on the other side of its hinge axis, protrudes partially across the mouth of a neighboring stall. The stall cannot be entered by an animal until the gate has been opened by the entry of a preceding animal into the neighboring stall. The gate has an effective width substantially greater than the stall width.

Abstract: A vehicular trafficway or roadway barrier or space barrier for controlling access to the same. The apparatus is installed below the parking space or roadway and includes a retractable barrier which blocks the space being protected when erected and permits access when retracted. The apparatus herein referred to as Scopelock is an entirely self-contained unit which may be operated from normal electrical service or a battery. The entire unit is designed to be unlocked and removed from a casing that is permanently fixed into the ground. Spaceage material protects the unit from moisture. Scopelock can be operated by remote control or coin boxes or keys as desired. Typically, when in place, Scopelock prevents access to vehicular parking spaces while at the same time, capable of providing parking security by limiting the space between Scopelock and other barriers positioned around the vehicles, thereby providing security from theft of the vehicle.

Abstract: A portable reserved parking alarm system including an electric motor contained in a housing mounted on a base plate and having a gear box mechanically connected to one end of an eccentric rod member whose other end is pivotally connected to a mast member, the lower end of said mast member being pivotally mounted on said base plate, said motor causing movement of said mast upon being energized by electrical means activated by a radio frequency signal, said electrical means including means for activating an alarm whenever said mast member is moved other than by action of said motor.

Abstract: An improved crossing gate for railroad grade crossings. The gate is constructed of an impact-resistant material, and the crossing arm is mounted so that it will swing out of the way and return to its original position if struck by a moving vehicle from either direction. The crossing arm also contains protected lighting that will withstand impact, and provision is made to permit easy replacement of burned-out light bulbs.

Abstract: A method of operating a vehicle barricade comprising the steps of providing an hydraulic system comprising an electrically operated motor and a passive accumulator, the hydraulic system is operably connected to a barrier for causing the barrier to be displaced between a first lowered position and a second raised position. The presence of obstructions disposed below the barrier is monitored and the barrier is prevented from being displaced to the first position upon the detection of an obstruction. An electromechanical valve is electrically operated for causing the motor to displace the barrier between the positions. The valve is electrically operated causing the accumulator to displace the barrier between the positions when the motor is not operating. The barrier is displaced to the second position upon the occurrence of a defined emergency condition.

Abstract: A barrier assembly used to selectively prevent unauthorized automobiles and like vehicles from entering a parking space wherein a barrier portion of the subject assembly is selectively positionable preferably through use of a remote control activated system, between a blocking and retracted position and further wherein the retracted position allows the authorized vehicle to pass thereover for parking within the designated space. The assembly may include spikes to puncture tires when in a blocking position or a warning sign or both.

Abstract: An articulatable barrier for selectively restricting access to a parking space, roadway, passageway or the like. The barrier includes a base and a barrier frame that is pivotally journaled through the base at a pivot axis for pivotal movement of the frame between a first obstructing position and a second nonobstructing position. The base has an aperture formed therein above the pivot axis. The frame carries a center bolt for movement of the bolt between a first lowered position and a second raised position. In the first lowered position, the bolt is received in the base through the aperture, for supporting the frame and for maintaining the frame in the obstructing position. In the second raised position, the bolt is spaced from the aperture and the base for permitting the pivotal movement of the frame. Means is provided for moving the bolt in a second raising direction, wherein the bolt is withdrawn from the base and the aperture being moved into the second raised position.

Abstract: A vehicle barricade comprises a frame to which a barrier plate is pivotally mounted for being moved between a passage and a blocking position. First and second hydraulic motors operably interconnect the plate and the frame. An hydraulic power supply is operably connected with the hydraulic motors and includes an uninterrupted line for assuring constant power supply to the first hydraulic motor for thereby biasing the first hydraulic motor into extension and control valve means for selectively supplying power to the second motor for thereby causing selective pivoting of the plate.

Abstract: A vehicle security barrier (10) for selectively prohibiting a vehicle from accessing a preselected area and for otherwise controlling vehicular traffic. The security barrier (10) comprises a base (12) defining a travelway (14) over which a vehicle can be driven. The base (12) comprises a forward end portion defining an entryway (20) whereby a vehicle enters onto the travelway (14) and a rearward end portion defining a travelway exit (22) whereby a vehicle exits the travelway (14). The security barrier (10) further comprises a security gate 918) pivotally mounted on the base (12) for being selectively raised to obstruct the travelway (14) and prohibit a vehicle from exiting the travelway via the travelway exit (22). Reciprocal actuating means are also provided for selectively raising and lowering the gate (18). In the preferred embodiment, the reciprocal actuating means comprises a first and second fluid actuated cylinder (64A and B).

Abstract: A vehicle barricade comprises a frame having an open top and bottom, side, front and rear portions. A barrier plate is pivotally associated with the frame for being pivoted between a first and a second position. A cylinder and piston assembly pivots the barrier plate between the positions. A first stop extends from and is carried by the barrier plate. A second stop is connected to the frame and is engageable with the first stop for preventing said barrier plate from pivoting beyond said second position. A plurality of tubes extend forwardly from the front portion and prevent the frame from moving in the event the barrier plate is impacted by a vehicle.

Abstract: An anti-terrorist vehicle crash barrier includes side support structures, crushable energy absorbing aluminum honeycomb modules, and an elongated impact-resistant beam extending between, and at its opposite ends through vertical guideways defined by, the side support structures. An actuating mechanism supports the beam at its opposite ends for movement between a lowered barrier-withdrawn position in which a traffic-supporting side of the beam is aligned with a traffic-bearing surface permitting vehicular traffic between the side support structures and over the beam, and a raised barrier-imposed position in which the beam is aligned with horizontal guideways defined in the side support structures above the traffic-bearing surface, providing an obstruction to vehicular traffic between the side support structures. The beam is movable rearwardly in the horizontal guideways with its opposite ends disposed transversely therethrough upon being impacted at its forward side by an incoming vehicle.

Abstract: A hydraulic barricade comprising a support to which a barricade plate is pivotally attached. At least a first hydraulic cylinder and piston assembly is operably connected with the barricade plate for pivoting the barricade plate between an up and a down position. A pump supplies pressurized hydraulic fluid to a primary source and a secondary source of pressurized fluid. A directional control valve is interposed between the cylinder and piston assembly and the sources for causing operation of the cylinder and piston assembly and thereby pivoting of the barricade plate. A first check valve is interposed between the sources for permitting pressurized fluid to flow from the pump and the cylinder and piston assembly to the secondary source and for preventing fluid from flowing from the secondary source to the primary source. The secondary source includes an hydraulic accumulator for storing hydraulic fluid under pressure.

Abstract: A terrorist vehicle arresting system includes a rigid immovable crash barrier positioned at one side of a driveway and a turnstile having a circular sector positioned at the other side of the driveway in such a manner that upon entrance of an unauthorized vehicle through a corresponding gate across the entrance of the driveway, means are provided to rotate the turnstile such that the turnstile deflects the vehicle into the crash barrier. In a further embodiment, two opposing turnstiles are used to wedge an oncoming vehicle therebetween. In one embodiment, the terrorist vehicle arresting system includes a rope-barrier attached to an elevating and lowering mechanism on one side of the driveway and is attached at its other end to the turnstile, such that upon the unauthorized attempted entrance and the striking of the rope-barrier, the turnstile is rotated by the rope-barrier into the driveway, diverting the vehicle into the crash-barrier.

Abstract: A passage device for cattle comprising an opening closeable by two doors hinged around vertical hinge axes on either side of the opening. As viewed from the space accessible via the passage device, one door is openable only outwardly and the other door only inwardly.

Abstract: A barrier gate arm useful in controlling exits such as in parking lots is provided comprising a stiffening member, preferably of wood, encased in an extruded sheath, or sleeve made from polycarbonate. The arm provides for easy operation and for a quick repair after the inevitable damage by offending vehicles.

Abstract: A collapsible warning barricade apparatus for restricting access to a designated area by vehicular and pedestrian traffic in which at least an upstanding portion of the apparatus is capable of collapsing towards a substantially ground surface-hugging position upon impact from traffic, as well as capable of collapsing into a substantially flat position for transportaion and/or storage. The barricade is restrained in its substantially upright position by two support runners which are pivotally attached to the barricade member. At each pivot point, automatic locking and biasing apparatus allow the barricade member to rotate from a locked upright position upon impact to a locked ground surface-hugging position. The support runners of the barricade may additionally be provided with spurs along the top edge to affix a sandbag, when required for ballast. A variety of signalling indicia are further integrated into the barricade member for warning emphasis.

Abstract: A vehicle barrier device 10 for the temporary blocking of a roadway 12 comprises blocking elements 20, 22, 24, 25 with joined conter-elements 26, 28, 30, 31. The blocking elements 20, 22, 24, 25 are pivotable around axles extending parallel to the main direction of the roadway 12 and are arranged either in the main flush with the roadway 12 or can be swung out of it. The barrier elements 20, 22, 24, 25 are inserted exchangeably into a frame 132 which is set into a pit 128 present in the roadway 12.

Abstract: A security barrier device comprises a rectangular container defined by sides, ends and a base. A post is mounted in the container for pivotal movement about a transverse pin with a slot in the post allowing linear movement of the post relative to the container. A recess in the base of the container allows the post to be latched in position in a vertical orientation and in addition the post can be stored by sliding out of the recess and then pivoting into a position lying along the container. A cover is provided by a first fixed part adjacent the pin and the second moveable part which is pivoted at the end of the container remote from the post and which is locked into engagement with a side of the post and a lug on the post by a locking mechanism welded to one side of the container.

Abstract: A vehicle security barrier (10) for selectively prohibiting a vehicle from accessing a preselected area and for otherwise controlling vehicular traffic. The security barrier (10) comprises a base (12) defining a travelway (14) over which a vehicle can be driven. The base (12) comprises a forward end portion defining an entryway (20) whereby a vehicle enters onto the travelway (14) and a rearward end portion defining a travelway exit (22) whereby a vehicle exits the travelway (14). The security barrier (10) further comprises a security gate (18) pivotally mounted on the base (12) for being selectively raised to obstruct the travelway (14) and prohibit a vehicle for exiting the travelway via the travelway exit (22). Reciprocal actuating means are also provided for selectively raising and lowering the gate (18). In the preferred embodiment, the reciprocal actuating means comprises a first and second fluid actuated cylinder (64A and B).

Abstract: A bollard type trafficway barrier for arresting vehicles, comprised of a cast in place foundation and a bollard replaceable therein with a spring for lifting the bollard that is directionally oriented with respect to traffic so as to withstand great impacts, and with access for replacement of the bollard, with retraction by manual depression and extension by instantaneous release of potential energy stored in said spring, the bollard being locked in both the retracted and extended conditions, and installation being flush with the grade when retracted and the bollard being released manually or power controlled from a remote location by a vehicle sensor.

Abstract: For the temporary blocking of the access to parking places, driveways and cess roads a post is used, which is anchored in the ground and is foldable about an articulation arranged over the ground, whereby a drive is located in the post which can be activated over a receiver in correspondence with a portable emitter. Thereby, the post is suitably built as a hollow body, so that the drive and the remaining parts can be safely lodged therein. This way, the barrier post can be remote-controlled without difficulty from an approaching vehicle by means of a portable emitter, or for instance in the case of blocking the access to football stadiums, from a control center.

Abstract: Apparatus and method of operation for controlling vehicular traffic entering or leaving a secured facility. The apparatus consists of a tire-puncturing spikes assembly, movable post assemblies, ditch/cover assemblies, fixed posts, a gate arm, and a safety hose & pressure switch assembly. Tire-puncturing spikes are mounted on a rotateable shaft imbedded in the roadway that will raise or lower the spikes in conjunction with the gate arm to control traffic. Movable posts can be raised or lowered to stop or permit traffic movement. Mechanically operated ditch covers can be opened to provide impassable traps for vehicles (or tanks). A gate arm operated in conjunction with the spikes will direct vehicles to stop before reaching raised spikes. A safety pressure switch and hose assembly is located immediately downstream of the spikes assembly and will automatically activate the entire apparatus into a "failsafe" mode if a vehicle passes over the hose while the spikes are in the raised position.

Abstract: A traffic control gate having a gate arm and a motor which is removably mountable to existing road structures so as to be portable. An inverted U-shaped bracket straddles the road structure in saddle fashion and is secured thereto. The bracket is preferably a three-piece hinged unit comprising a base and two hinged side plates. The side plates are adjustably positionable about hinges so as to fit the contours of various K-rail sections and other structures. In the event the road surface is the only available structure, the side plates may be removed and the gate mounted on a sturdy table by the base's hinges. The motor is preferably battery operated so that the gate is usable where no external power supply is available. Handles on the base allow the compact gate to be carried to another location.

Abstract: An instant defense barrier for providing unobtrusive protection for a building or other site. A plurality of barrier post assemblies are anchored in the earth. Each assembly includes a barrel and a post slidably fitted in the barrel. The head end of the post portion is essentially flush with the level of the roadbed when the post is in the normal, non-extended position. When activated by closing a switch, the post is propelled from the confined position in the barrel by an explosive charge, a compression spring or other propulsive forces to a locked extended position to provide a barrier against unauthorized passage by a motor vehicle. A plurality of auxiliary cables are optionally connected between adjacent posts to provide further obstruction to the progress of small vehicles, such as motorcycles or bicycles.

Abstract: A stopper device for positioning a push car in front of the door of an elevator. The stopper device has a horizontally pivoting arm, a vertically pivoting arm and a pair of gears interlocking them with each other. The horizontally pivoting arm is locked by a stopper to its operative position and the stopper is kept in its operative position by a pushing member.

Abstract: A lift gate has its bearing structure mounted on a post for rotation about a vertical axis to provide lifting and an alternative swing action. Mechanical latches normally keep the gate from swinging. An electrical motor normally lifts the gate and power is maintained by a solar electric panel. The motor can be mechanically disconnected from the gate to provide for manual lifting of the gate when there is a malfunction. A clock mechanism energizes the motor to close the gate after it has been opened for a predetermined time period.

Abstract: To prevent breakage, an end section that can be positioned across a roadway is connected through a slanting pivot to a supporting section, the raised and lowered positions of the supporting section being under control of a usual standard. The pintle of a hinge for the pivot lies along slanting abutting ends of the supporting section and the end section such that the end section while the sections are horizontal is maintained in position by gravity. An L-shaped latching device has a weight at one end, an intermediate pivot, and a latch at the other end to latch the sections together by gravity while the sections are raised from a horizontal position, the latch retaining said end section upright while the supporting section is fully raised.

Abstract: A pit disposed between an unsecured area and a secured area is normally bridged by a generally flat platform which normally forms a continuation of a roadway. The plate is pivoted at the unsecured side of the pit and is normally supported at the protected side by a weight-responsive removable or frangible support so that an unapproved vehicle will cause the support to give 'way and let the platform swing down and thereby entrap the vehicle in the pit. A plate at the protected side of the pit normally lies in the plane of the platform and functions as an extension thereof. When the weight-responsive support gives 'way and the platform swings down, the plate swings up and forms a blast shield across the path of the force of an explosion of a bomb in the entrapped vehicle. When an approved vehicle is to cross into the secured area a normally inoperative support is engaged with the platform so as to bypass the weight-responsive support.

Abstract: A device to block car parking spaces comprising a collapsible gate and a collapsible anchoring post; the gate comprises a flat structure including at least one pole and a crossbar mutually perpendicular to one another, the pole being pivotally jointed at its bottom end to a base plate affixed to the ground and affixed at its top end to the crossbar which is parallel to the jointing axis of the pole; the anchoring post is pivotally jointed at its base to a base plate by an axis perpendicular to the axis of the base plate for the pole; and the crossbar is of such length as to rest with one of its free ends on the free end of the anchoring post when the post and gate are in a vertical position. A blocking lock is provided at the mutual points of support of the crossbar and post.

Abstract: A portable vehicle barrier for positioning in a roadway or the like has a base plate carrying first and second spaced stanchions forming a checkpoint therebetween. A shaft is pivotally secured to the base plate and extends transversely between the stanchions. A gate or barrier plate is pivotal with the shaft between a first horizontal position and a second angularly disposed position adapted for preventing vehicle passage through the checkpoint by engagement of the barrier plate with the vehicle. An anti-tampering means associated with said stanchions and said gate is provided for preventing unauthorized interference with the raising and lowering of the gate.

Abstract: A vehicle barrier device is installed in a trench in a roadway. An impaler housing sits in a slot of a liner and supports a pivoting member in a slot in its top surface. The pivoting member has an impaling arm on its forward end, a massive counterweight at its rear end, and a pivot between them. One or more pins and an explosive bolt secure the impaling arm to the forward end of the impaler housing. When the device is remotely activated by security personnel, the bolt explodes, freeing the impaling arm. The counterweight is sufficiently massive so that the pivoting member tends to turn about the pivot under the force of gravity, thrusting the impaling arm above the surface of the roadway. The impaling arm projects at an angle toward a vehicle to be stopped, which is impaled by the arms.

Abstract: A device for stopping selected vehicles in which a hinged pressure plate or ramp is supported by a pivotally mounted barrier plate, which is pivotally linked to the pressure plate and supported by a retractable locking device allowing vehicles to pass over the device.When a selected vehicle is to be stopped, the locking device is retracted, allowing the weight of the vehicle to depress the pressure plate, thus pivoting the barrier plate from its horizontal position to its barrier position, where it blocks vehicular movement.

Abstract: A twin drum cable helical gear worm drive garage door opener which provides positive drive in either direction and ensures positive cable take-up and supply spool synchronization and ensures positive position relationship between the trolley and the operator head and has pre-assembled anchored cable ends which allow easy assembly and disassembly. The cable is oriented in the vertical plane which allows the point of cable latch to be in the same load/force plane and minimizes bowing of the support shaft under severe load conditions. The integral motor worm reels and support shaft results in a compact light weight unit and cable tensioning means are provided for allowing easy and simple adjustment of the unit when it is installed.

Abstract: A vehicle traffic-way controller of retractile barrier configuration wherein activation and control is by hydraulics in the form of a pressure source applied from a motor driven pump and directed by a valve to opposite ends of a double acting cylinder and piston actuator to extend and retract the barrier, there being switch control with positive positioning of the barrier and with impact absorbing protection for the hydraulics and structure.