Abstract: A revolving door comprising an at least partly cylindrical shell wall, which is embodied with an entrance and an exit, and two rotating door leaves, which during normal operation are in place in each other's extended direction inside the shell wall. Between the shell wall and an end of at least one door leaf, which end can move near and along the shell wall, a sliding door is provided, which is suitable for closing off the entrance of exit, respectively, and during normal operation the end of the door leaf is constantly positioned near the sliding door and between its lateral edges.

Abstract: The present invention relates to a rotary access locking apparatus which is designed to perform rotation lock/position control/damping functions for a plurality of rotating plates arranged at constant intervals by a mechanical mechanism in the case that access is performed via the rotating plates.

Abstract: A revolving door has driven door panels, which are movably positioned around a central rotating element. Each pair of door panels has an individual drive. The driving speed for each door panel is chosen on the basis of the position taken by said door panel in its path of rotation.

Abstract: This invention relates to a revolving door with a plurality of door panels which can be rotated around a central axis inside a cylindrical barrel wall that surrounds them. The invention teaches that one of the door panels or parts thereof can be detached from the position it or they occupy during operation, and can be pivoted and/or moved into a position that forms a night surround, in which it/they close the entrance and/or the exit.

Abstract: The invention relates to a revolving door provided with driven door panels (1, 2) which art movably positioned around a central rotating element (3), in which each door panel (1, 2) has an individual drive. The driving speed for each door panel (1, 2) is chosen on the basis of the position taken by said door panel (1, 2) in its path of rotation. Each pair of door panels (1, 2) is provided with a drive.

Abstract: A method of manufacturing a sintered compact is disclosed herein. The method comprises the steps of: (1A) producing a green body containing metal powder, for example, by means of metal injection molding (MIM); (2A) compacting the green body by pressing it preferably by means of an isostatic pressing (2A); (3A) debinding the compacted green body; and (4A) sintering the debinded green body to obtain a sintered compact. The green body compacting step may be carried out during or after the debinding step or during the debinding step. Further, a step for performing machine working on the green body may be included.

Abstract: A revolving door with a ceiling drive beam that is integrated into the ceiling construction, whereby the ceiling construction consists of two circular segments. The ceiling drive beam is located between the segments and is continuous over the inside diameter of the face band and is connected on the face side to the face band. The result is a component that braces and stiffens the ceiling construction, so that other elements of the ceiling construction, such as the struts that support the face band, can be realized lighter in weight and can be manufactured more economically. When the ceiling drive beam is adapted to accommodate face bands of different diameters, all that is necessary is an elongation of the ceiling drive beam on the end, while retaining its cross section.

Abstract: A parking lot management system including a plurality of parking space barriers each having a vertical member and an arm having an inboard end rotatably mounted to the vertical member. In use, the arm is adapted for pivoting about a vertical axis at least about 90 degrees. The parking space barriers each include a locking assembly for selectively fixing the arm with respect to the vertical member.

Abstract: A door system is driven by a motor. The door wings of this door system are guided by rollers (27) on a rail (10) secured in a door frame construction. The driving motor (30) of each door wing is secured onto an operating mechanism receiving the roller (27). It acts on the roller (27) in a positive manner or by friction-grip. The door system with the driving motor (30) fixedly arranged on the door wing and moving jointly with the door wing has a simpler structure as compared to known door systems, and can be manufactured and serviced at favorable cost.

Abstract: A revolving door has opposed vertical sidewalls defining a passage space, opposed passage openings, and a door assembly including a vertical central axis and a plurality of door wings extending outwardly from the central axis. The opposed vertical sidewalls form opposed substantially flat surfaces. The plurality of door wings are adapted to eccentrically revolve about the vertical central axis, such that an outer extremity of at least one door wing is always in close sealing proximity with each of said opposed surfaces. Preferably, the sidewalls are comprised of opposed vertical substantially flat members. The door wings that eccentrically revolve within the passage space allow use of opposing substantially flat sidewalls in place of curved sidewalls.

Abstract: A turnstile with a housing, a drive and a locking element with a barrier arm is set in motion following verification of the access authorization of a user wishing to pass, rotating the barrier arm from its blocking position into a position out of line of passage. The advance of the user is then detected by a downstream sensor, in particular an opto-electronic sensor, which causes the barrier arm to rotate further in the same direction into the blocking position.

Abstract: A power transmitting arrangement for doors, preferably revolving or swinging doors with door leaves (30) moving in a circular path inside lateral portions (33), is useful for both driving and braking the door. Between a stationary element (K1) and a relatively displaceable element (K2) is arranged a power transmission including an engagement surface (Y) at the one element and at least one engagement device (18,23) at the other element wherein power such as motor power for the operation of the door and/or inertia derived from the door on the braking of the same is transmitted utilizing at least one obliquely against the surface of engagement (Y) arranged and such engagement device carrying swingably arranged arm so movable that the power engagement increases with increasing torque.

Abstract: A revolving door lock is positioned on an inner space of the building and is sealed to the outside so that no heat energy is lost for nothing and hardly no draught appears. There is no need for three or four wings at the individual revolving doors so that with each revolving door more space is available for the passage with trolleys, wheel chairs, luggage and the like. Furthermore, the revolving door lock can be passed quickly, in that at each revolving door a free passage is possible since only one of the doors should effect a seal at a time, while the other one can be fully open. As a result, several persons may pass through the revolving door lock in their own speed without interfering with each other.

Abstract: A turnstile is disclosed which is easily adapted to operate in either a clockwise or counterclockwise direction of rotation and which does not permit reverse rotation during operation. Resistance to rotation in the reverse direction is achieved by means of a drag shoe mechanism. As a rotor mechanism rotates about a corresponding stator mechanism it trails a drag shoe by a rigid connecting rod, or drag arm, across a bearing surface. The drag arm is disposed at a non-perpendicular angle. In reverse motion the angularly inclined drag arm forces the drag shoe to jam into the bearing surface and thereby act as a brake. The turnstile is provided with a quick release wrench, an safety release bolt which protrudes beyond the housing of the turnstile mechanism, and emergency release instructions labels clearly visible on the top and pillar of the turnstile.

Abstract: A revolving security door for the controlled passage of persons from a non-protected environment to a protected environment, for example a bank, which permits the normal transit of persons even in the event of the interception of an unwelcome person, including a cylindrical chamber formed inside a structure, a turnstile rotatable within the chamber in a predetermined sense of rotation and having sectors each for accommodating a person, an entry aperture and an exit aperture formed in the structure, a sensor associated with the structure for detecting an unwelcome person or object and for emitting an alarm signal, an emergency door associated with the exit aperture and activated to close by the said alarm signal, the said door comprising a first panel and a second panel which are held together and made to rotate in the opposite sense of rotation from that of the turnstile, after the door has been closed by the first panel and before the door is opened by the opening of both panels.

Abstract: A mantrap in which a demarcation in shape of a segment of an arc is provided at one side of a passage. The open side of the demarcation faces the other side of the passage. The demarcation extends, furthermore, along a predetermined angle of circumference and has a barrier element that rotates around a vertical axis positioned approximately in the center of the demarcation and is provided with leaves extending out from the vertical axis of rotation and including equal angles. The leaves have grating rods positioned separately and one above another. A barrier rake extends out from an axis of the barrier element to the other side of the passage, and has grating rods displaced in position from the grating rods in the leaves and one above another. The barrier-rake rods allow unimpeded rotation of the barrier element. The barrier rake, furthermore, is a gate element, and the barrier element is a rotating door with at least two leaves.

Abstract: A turntable means regulates the flow of animals, for example, ratites (includes ostrich and emu) through a slaughtering facility. The turntable means has a circular turntable rotating about an axis within a circular perimeter wall. The perimeter wall has a first opening leading to a holding area and a second opening leading to a stunning area. The turntable has a plurality of upstanding walls extending radially from the axis and forming confinement sectors for receiving the animals. The turntable means moves the animals from the first area to the second area by moving the animals about the axis while on the turntable via the confinement sectors from the first opening to the second opening. The rotation of the turntable is controlled in order to regulate the flow of the animals from the first area to the second area.

Abstract: A revolving door construction includes an elongated pivot column and a plurality of spaced barrier members arranged in at least one row wherein a first end of each of the barrier members is secured to the pivot column. A support bar is spaced from the pivot column. The support bar has a plurality of longitudinally spaced transverse apertures extending therethrough such that a respective one of the barrier members extends through a respective one of the support bar apertures. Fasteners are utilized to secure the support bar to the plurality of barrier members.

Abstract: The invention is a turnstile gate with a serpentine configuration instead of conventional protruding arms. Both the stationary and revolving gates are formed of a continuous configuration of pipe which loops back and forth with substantial straight sections oriented horizontally. In order for the movable gate to pass through the stationary gate, the loops of the stationary gate must be offset from those of the revolving gate by one-half a cycle, and the loops of at least one of the gates must vary in their heights so that they can be located both outside and inside of the loops of the opposing gate. The advantages of the configuration are safety, ease of manufacture and greater strength, with a unique aesthetic appearance.

Abstract: A revolving door with a passage space (3) enclosed by a housing (1) in which the door panels (4) are mounted onto a central rotatable support (5). One or more sensors (6) are present which, at the presence of an object within a certain distance of a door panel (4) may emit a signal. The signal serves to actuate a controlling device so as to operate the drive of the revolving door.

Abstract: A revolving door for the protection of the access to and/or exit from a room is provided with a revolving shaft having a number of door wings spaced evenly around it, a pair of panels at opposite ends bordering on the path followed by the door wings and forming a partly closed zone with a first and a second opening, a drive motor for the shaft and a control unit for the drive motor. Further a monitor unit is provided having a detection aerial, which aerial generates a detection field, such that when a person carrying an authorization card enters the detection field the monitor unit sends an enable signal to the control unit to turn the shaft through a predetermined angle in the direction of passage to allow the person to proceed from the one opening to the other.

Abstract: A control system for a revolving door includes an ultrasonic sensor having multiple sensor heads. The door has a housing and multiple movable compartments formed by door wings. The sensors emit energy waves into the housing in bursts, then receive echoes from any objects, including people, in the compartments. The sensors are activated when the door is activated by an authorized user. A controller stores a binary "echo" or "no echo" signal in memory in response to an emitted energy wave. The system determines a maximum height of an object or person in a compartment, then measures the total amount of time that it detects something above a selected percentage of the maximum height. When this time reaches a predetermined amount, the system interprets that as "piggybacking" (two individuals in one compartment). The system also interprets signals that go above, drop below, and then rise above the selected percentage again as piggybacking.

Abstract: A revolving provided with a number of door wings which can be driven with the aid of a drive mechanism. This comprises a chain running in a substantially horizontal plane along a number of chain wheels in an essentially polygonal path and operatively engaging at least one door wing via a carrier. This carrier comprises two hinged rods which engage the chain at two spaced apart points and are interconnected via a lever which is movably and driveably connected to the door wing.

Abstract: An anti-armed robbery system is provided wherein persons enter and exit an establishment through a plurality of floor to ceiling extending walls and lockable doors made of bullet resistant materials forming a completely enclosed bullet resistant vestibule, having means for detecting the entry and exit of persons, and means responsive thereto for allowing the unhampered entry to the establishment of entering persons, and not allowing exit from the vestibule of persons exiting the establishment, unless so enabled by an employee of the establishment. Elongated, vertically oriented anti-jamming panels are provided in the doorway, which rotate about a vertical axis so that a lateral edge of the panel projects into the doorway and rotates in a direction so as to eject into the vestibule an object or person obstructing the closure of the door.

Abstract: A revolving door, particularly for the protection of the access to a room, comprises a rotating shaft, a number of door wings spaced around it and mounted thereto and a pair of opposite panels bordering the door wings and defining a partly closed zone with a first and a second opening. Further a drive motor for the shaft and a control unit for the drive motor are provided. The revolving door is provided with a detection means for detecting a person authorized or unauthorized to access the room, and a first sensor for detecting an unauthorized person entering the zone through the first or the second opening respectively. The control unit turns off the drive motor in response to the first sensor. A second sensor is adapted to detect the presence of an unauthorized person outside said zone in or close to the first or second opening respectively, wherein the control unit turns off the drive motor in response to said second sensor.

Abstract: In safety circuits for braking or arresting devices (7) of flywheel masses or machine parts, especially a revolving door, which are driven by electric motor and can be switched on electrically, in which at least one of two edges moving toward each other is provided with a pressure-sensitive electrical switching member (3) for generating interference signals. Interference signals generated during a disturbance are sent to an electronic control unit (1) and are used, by an electronic switch (8), to switch off the drive motor (10) and/or to switch on a braking or arresting device (7). The movement of the part provided with the movable edge or element is stopped even when the electrical switch (8) of the control unit (1) does not respond correctly in the presence of an interference signal. The reliability of the safety circuit is continuously checked.

Abstract: A rotary gate control assembly includes a pivot rod on which the rotary gate is adapted to rotate and a cam having a continuous cam surface with a plurality of lobes disposed at spaced intervals therealong for defining a plurality of rotary gate home positions with the cam being operatively secured to the pivot rod. A first member, which can be a ball or a rod, is cooperatively positioned relative to the cam surface for selectively allowing a rotationaly movement of the cam generally for an angular extent at least equal to an angle defined between adjacent ones of the lobes. Preferably, a second such member is also cooperatively positioned relative to the cam surface for the same purpose. The second member is spaced from the first member.

Abstract: In a security revolving door assembly for persons, comprising one blocking sector (13) and one passage sector (12) or two passage sectors (12), a motor-driven revolving door (10), which can be blocked by means of a braking device controllable by an electronic control unit, is arranged in the door housing. Peripheral identification devices (46, 47) are connected to the electronic control unit. To ensure reliable entry and exit control, blocking, which cannot be overcome at certain angular positions of the revolving door (10), but which always makes it possible to leave the door housing, is provided. This is achieved by means of a blocking disk (23) which is in a rigid rotating connection with the revolving door (10) and has, in a blocking plane, at least one stop face pair (26/1-26/2, 27/1-27/2, 28/1-28/2) with two stop faces (26/1 through 28/2), each acting in one reaction direction.

Abstract: A revolving door includes an elongated pivot column having a plurality of integrally formed first grooves extending longitudinally therealong at equidistantly spaced intervals therearound. A plurality of barrier members are provided. At least one of the members is associated with each first groove and arranged to extend radially outward of the groove. A locking device is concealably contained and interposed between the side wall of each first groove and a terminal end of each barrier member mountingly associated with the groove for retaining the barrier member in the groove. The locking member includes a second groove which extends longitudinally along the side wall of each first groove and a rigid locking bar extending into the second groove. The locking bar has a round side and a flat side and is selectively rotatable to wedging engage a wall of the second groove and the terminal end of each barrier member.

Abstract: In a security vestibule entry for controlled access to banks and the like enclosures, two walls of the vestibule have substantially circular arc bases, different diameters, and respective angular breadths whose sum is at least 360.degree., being mounted on respective concentrical circular tracks and forming vestibule doors. The security vestibule is reliable, simple in construction, and compact in size.

Abstract: An electromagnetic shield-type doorway for a building is provided with two doors having a curved passageway between them. By lengthening the passageway to such an extent that the two doors cannot be opened simultaneously, electric waves can be blocked at either of the doors. The electromagnetic shielding effect can be enhanced by installing a revolving door in the passageway and attaching electrically conductive brushes to at least the lower edge and one side edge of the revolving door to fill the gaps at these edges. In a system for electromagnetically shielding a building, a doorway passageway of the building is partitioned by three or more doorways each having an electromagnetic shielding function. When persons leaving and exiting a building simultaneously approach entrance and exit doors at the ends of the doorway passageway so that these doors open at the same time, the central doorway remains closed to maintain the integrity of the electromagnetic shield.

Abstract: This invention relates to a quarter point return mechanism for a manually driven revolving door. Revolving door leaves extending outwardly from a shaft are partially enclosed between opposed curved sidewalls. The return mechanism has a number of elements including an actuator, a rack arranged to be linearedly displaced by the actuator, and a pinion engaging the rack and being rotatable in opposite directions. The pinion is rotatably connected to the central shaft of the door. When the pinion is rotated in one direction, rotation is transmitted to the shaft. When the pinion is rotated in the opposite direction, the rotation is not transmitted to the shaft. Also included is a circumferential displacement sensor which operates the actuator when the outer ends of the door leaves are in a position circumferentially displaced from the sidewalls. The return mechanism returns the door leaves to a rest position in which the door leaves are in contact with the curved sidewalls.

Abstract: This invention relates to a quarter point return mechanism for a manually driven revolving door. Revolving door leaves extending outwardly from a shaft are partially enclosed between opposed curved sidewalls. The return mechanism has a number of elements including an actuator, a rack arranged to be linearedly displaced by the actuator, and a pinion engaging the rack and being rotatable in opposite directions. The pinion is rotatably connected to the central shaft of the door. When the pinion is rotated in one direction, rotation is transmitted to the shaft. When the pinion is rotated in the opposite direction, the rotation is not transmitted to the shaft. Also included is a circumferential displacement sensor which operates the actuator when the outer ends of the door leaves are in a position circumferentially displaced from the sidewalls. The return mechanism returns the door leaves to a rest position in which the door leaves are in contact with the curved sidewalls.

Abstract: A lock for a revolving door includes an electrically-controlled, solenoid-extensible trip rod engageable by a panel of the door. Movement of the rod by the door panel rotates a key from a lock holder to release a spring-biased locking element which is forced onto the door panel to prevent further rotation of the door.

Abstract: A collapsible revolving door in which a plurality of leaves (32, 34, 36) are mounted to an upper cam housing (52) and a lower cam housing (56) for rotation about a central axis. Each of the leaves is mounted to a cam (80) through a pivot shaft (60) for rotation about a central axis of the cam (80) and the pivot axis (60). Each cam (80) has substantially opposed engaging sockets (84, 86) and substantially opposed collapsing sockets (88, 90). Dentent mechanisms (92) have semispherical cam followers (96) which are positioned in the engaging sockets (84, 86) when the leaves are radially oriented about the central axis. Under panic conditions, the door leaves (32, 34, 36) rotate about the pivot shafts (60) against the retaining force of the detent mechanism (92), whereby the detent mechanisms will register with the collapsing sockets (88, 90). Adjustment blocks (98) are adjustable mounted in the housing (52, 54) to simultaneously adjust the bias on two adjacent detent mechanism springs (94).

Abstract: A revolving door and controls therefor are set forth to restrict access into a room to only authorized personnel. The revolving door is disposed in a housing having an entrance and an exit into the room. The revolving door includes a plurality of wings which, in cooperation with the housing, define a plurality of compartments movable in response to rotation of the door to transport a person between the entrance and exit through the housing. Included are means for identifying authorized personnel and driving the door for rotation to transport that authorized person in a selected compartment between the entrance and the exit. Means are included for sensing two or more persons in the selected compartment moving from a starting point between the entrance and the exit, the sensing means reversely rotating the door to return the selected compartment to the starting point.

Abstract: A security enclosure for use with an existing door frame which is within a wall having first and second sides and extending upwardly from a base. A first door is hingedly connected to the door frame and includes a second portion which is capable of latching to the door frame. Between the first and second portions is a third portion which extends outwardly from the door and includes a ceiling. A second door of like construction is placed on the second side of the wall within the door frame to form a security unit.

Abstract: A motor drive and control system is set forth for use with revolving doors. To operate the door and revolve the revolving door panels a motor is coupled to the revolving door shaft. The motor is of the d-c type having a fixed, permanent magnet and a rotating armature. A relay is provided which is energized when a person enters the door and begins to push on a selected panel. Pushing on the panel partially rotates the shaft as well as the motor armature. Rotation of the armature generates the voltage to trigger a relay which, in turn, energizes the motor to rotate the shaft and revolve the panels approximately 180 degrees between the entrance and exit as determined by a timer to pass an individual through the door.

Abstract: The present invention concerns a revolving door device having arcuate screens arranged on diametrically opposite sides of the passage space constituting part of the revolving door closely adapted to the fixed outer walls of the device. Said screens being connected with each other through a partition wall divided up in three sections having the central section openable. The respective outer sections is aligned along a chord of the circular space so that when said screens are in a position for access to the respective passage spaces, a free through path may be obtained from entrance opening to the outer through the openable central section in case of emergency.

Abstract: A revolving door system has a central axis defining a center shaft and three wing hangers rigidly joined and extending in a equidistant spaced apart relationship about the center shaft's upper portion.A pair of facing substantially semicircular walls, spaced apart to define regions of ingress and egress, partially surrounds the wings and shaft on opposite sides.The system allows free passage of persons in an authorized direction while preventing, and driving out, intruders attempting to pass in an unauthorized direction. If an intruder enters the system in an unauthorized direction, the door stops before the intruder has free passage to the other side, reverses direction and forces the intruder back toward the entrance. In one configuration, the door then rotates in its forward direction to permit the authorized passenger to escape the system, but not far enough to allow the intruder to pass. In another configuration, the reversal of the door allows the passenger to escape from the side in which it entered.

Abstract: A controller driven revolving door system has facing spaced apart curved panels partially enclosing three equiangularly spaced center shaft coupled wings and defining entry and exit openings. The controller automatically selectively directs traffic flow through the entry and exit openings and is responsive to a microwave motion detector at the entry and a mat switch in a quarter-point position accessable to the exit. A DC motor is coupled by a gearing assembly to the center shaft. The controller monitors current passing through the motor windings sensing shaft rotation. Responsive to the mat switch, the controller applies a resistive load to the DC motor windings to regeneratively brake the rotation of the door. The controller thereafter reverses the polarity of the motor windings causing the door to rotate in a reverse direction and back any individual out of the exit area.

Abstract: A side wall panel for a revolving door, consisting of a number of high and narrow strips of flat glass, interconnected by flexible joints and maintained in the desired arcuate configuration by a curved frame. The use of flexible joints permits the panel to be shipped flat. Internal stresses in the joints are minimized by initially manufacturing the panel on a support which is curved to an arcuate shape corresponding to that of the final installation.

Abstract: A controller driven revolving door system has facing spaced apart curved panels partially enclosing three equiangularly spaced center shaft coupled wings and defining entry and exit openings. The controller automatically selectively directs traffic flow through the entry and exit openings and is responsive to a microwave motion detector at the entry and a mat switch in a quarter-point position accessable to the exit. A DC motor is coupled by a gearing assembly to the center shaft. The controller monitors current passing through the motor windings sensing shaft rotation. Responsive to the mat switch, the controller applies a resistive load to the DC motor windings to regeneratively brake the rotation of the door. The controller thereafter reverses the polarity of the motor windings causing the door to rotate in a reverse direction and back any individual out of the exit area.

Abstract: A new turnstile is provided which is constructed from a minimum number of different extruded components and includes an improved turnstile control mechanism. The turnstile is comprised of a plurality of upstanding, spaced mounting columns which define a frame-like structure. One mounting column includes a plurality of spaced apart barrier arms extending radially therefrom. Closure means extend between at least a pair of mounting columns which are spaced opposite the one column. A pivot column is rotatably journaled intermediate the one and the at least a pair of mounting columns and includes a plurality of longitudinal grooves. A plurality of pivot column arms associated with each pivot column groove extend radially therefrom at spaced apart intervals to permit free passage between the barrier arms when the pivot column is rotated.

Abstract: A livestock feeding apparatus having an endless belt supported on an elongated table above a feed bunk by a plurality of stands. The stands are laterally and vertically adjustable to level the apparatus and accommodate different sized bunks. The belt has an upper run that rides on a wood deck secured to the support. An idler pulley and drive pulley engages one end of the belt opposite ends. The belt is retained in driving engagement with the drive pulley by a driven roller engageable with the lower run of the belt adjacent the drive pulley. A motor drives the roller at a speed so that the surface speed of the roller is greater than the linear speed of the belt to maintain the lower portion of the run of the belt between the roller and the drive pulley under tension. A sweep assembly slidably mounted on the wood deck operates to move the material off of the side of the top run of the belt into the bunk.

Abstract: A security system for controlling access to a room or part of a building through an opening comprises a revolving door turnable only in a single predetermined direction of rotation about a vertical axis situated at the center of a passage defined by a pair of opposite walls each in the form of cylindrical sectors disposed at either side of the opening, and locking means for stopping the revolving door and locking it in a predetermined angular position in such a way as to lock in a person passing through the said passage if, for example, a weapons detector senses that he is armed. The security system is further provided with a curved sliding door angularly displaceable about the axis of rotation of the said revolving door between an open position adjacent one of the two passage-defining walls, and a closed position spanning the said two walls across the opening leading from the said passage into the room or part of the building into which access is controlled by the system.

Abstract: Security door including a revolving door with a one way bearing continuously preventing rotation of the door in a reverse direction so that persons can only travel from an entry to an exit side of the door by passing around the door axis in a forward direction. A mat switch is positioned so that persons attempting to pass from the exit side to the entry side by revolving the door in the forward direction must stand on the mat switch and operate it. Operation of the mat switch causes operation of a clutch which locks the door against rotation in the forward direction.

Abstract: Moving automated toll collector apparatus comprises a plurality of automated toll collectors, each having a large hopper presenting a large target for receiving toll coins, driven at spaced apart intervals in a path parallel to a traffic lane of a toll station. Vehicles enter the traffic lane, take a position adjacent one of the automated toll collectors, deposit the toll and depart the toll station without stopping. This improves traffic flow through toll stations and eliminates traffic backups. Control arm units including a control arm extending across the traffic lane may be positioned ahead of each automated toll collector, the control arm unit also being driven in the path along the traffic lane. The control arm units may include signs indicating the toll due and for indicating when the toll has been received. The automated toll collectors are preferably driven about the periphery of an elongated traffic island separating two traffic lanes at speeds from approximately one to ten or twelve miles an hour.

Abstract: A safety apparatus is associated with otherwise conventional revolving doors which are rotatable about a vertical axis. A pair of closure components are positioned adjacent to the respective sides of a revolving door and are displaceable in the horizontal direction. The closure components include profiled surfaces which delimit access space of the revolving door. In case of emergency situations, e.g. caused by a fire, the closure components are moved away from one another under the power of two respective jacks, leaving access space around the sides of the door wide enough for the passage of persons.

Abstract: A revolving door and controls therefor are set forth to restrict access into a room to only authorized personnel. The revolving door is disposed in a housing having an entrance and an exit into the room. The revolving door includes a plurality of wings which, in cooperation with the housing, define a plurality of compartments movable in response to rotation of the door to transport a person between the entrance and exit through the housing. Included are means for identifying authorized personnel and driving the door for rotation to transport that authorized person in a selected compartment between the entrance and the exit. Means are included for sensing two or more persons in the selected compartment moving from a starting point between the entrance and the exit, the sensing means reversely rotating the door to return the selected compartment to the starting point.