Abstract: This automatic gate assembly includes at least one first automatic gate and at least one second automatic gate. The or each first automatic gate includes a first frame defining a first passage, at least one first obstacle, chosen from the following obstacles: swing leaf, laterally sliding leaf, pivoting leaf, for selectively closing and opening the first passage, and a first motor assembly for moving the first obstacle. The or each second automatic gate includes a second frame defining a second passage, at least one second obstacle, different to the first obstacle and chosen from the following obstacles: swing leaf, laterally sliding leaf, pivoting leaf, for selectively closing and opening the second passage, and a second motor assembly for moving the second obstacle. The first and second motor assemblies are substantially identical to each other.

Abstract: Electro-mechanical and electronically controlled access devices are described for automatically controlling passage between two areas, and where a plurality of such access control devices may be ganged or clustered to provided additional throughput and directional control, including stacking a plurality of access control devices side by side within a cluster. Each access control device contains multiple rotatable and moveable door panels. The door panels are controlled by various drive mechanisms to enable passage through the device, while ensuring by the use of sensors that door panels avoid touching subjects as they traverse the device. The direction of flow through a device according to these embodiments is electronically controlled and may be changed from time to time. At any instant in time while being traversed, the flow through each device is unidirectional. Multiple devices within a cluster can be directionally controlled according to traffic, demand, time of day, or other factors.

Abstract: A mezzanine gate assembly is adapted to provide ingress and egress to an elevated platform while safely preventing falls and injury to workers positioned thereon or even below the mezzanine platform. The mezzanine assembly generally includes a support assembly which has a first and second upright support members. Each of the first and second upright support members has a base portion fixedly attached to the elevated platform and an upper portion which is configured to function as a post adjacent to the respective terminating railing. The mezzanine gate assembly comprises an interior gate assembly and an exterior gate assembly. Generally, each of the interior and exterior gate assemblies are designed to move and pivot through a path of motion which provides a plurality of points of travel. The interior gate assembly is operably designed to engage with and deviate rearward while the load is delivered to the platform via forklift in order to provide a barrier between the respective railing and side of the load.

Abstract: Electro-mechanical and electronically controlled access devices are described for controlling access to a building, premises or area in a secure manner such that a subject who is deemed ineligible for access will be barred entry and may be optionally retained. The devices can contain multiple rotatable door panels, which can be positioned behind one another. The door panels can be controlled by mechanized arms or other control devices in order to control the passage through the device. The direction of flow through a device according to these embodiments is electronically controlled and may be changed at any point in time. At any instant in time, the flow through the device is unidirectional. Multiple devices can be stacked together to form clusters, which can be controlled according to traffic, time of day, or other factors.

Abstract: Electro-mechanical and electronically controlled access devices are described for controlling access to a building, premises or area in a secure manner such that a subject who is deemed ineligible for access will be barred entry and may be optionally retained. The devices can contain multiple rotatable door panels, which can be positioned behind one another. The door panels can be controlled by mechanized arms or other control devices in order to control the passage through the device. The direction of flow through a device according to these embodiments is electronically controlled and may be changed at any point in time. At any instant in time, the flow through the device is unidirectional. Multiple devices can be stacked together to form clusters, which can be controlled according to traffic, time of day, or other factors.

Abstract: Electro-mechanical and electronically controlled access devices are described for controlling access to a building, premises or area in a secure manner such that a subject who is deemed ineligible for access will be barred entry and may be optionally retained. The devices can contain multiple rotatable door panels, which can be positioned behind one another. The door panels can be controlled by mechanized arms or other control devices in order to control the passage through the device. The direction of flow through a device according to these embodiments is electronically controlled and may be changed at any point in time. At any instant in time, the flow through the device is unidirectional. Multiple devices can be stacked together to form clusters, which can be controlled according to traffic, time of day, or other factors.

Abstract: Among other things, there is shown embodiments of an enclosure such as a portable building with features focusing on overall improvement in energy usage. Wall, roof and floor configurations are disclosed that provide significant energy savings. Methods are also disclosed for preparing such features and/or refitting existing portable buildings for such energy savings.

Abstract: Apparatus and methodology for providing electronic access control are disclosed. In an exemplary configuration, a retrofittable electronic lock can be used to provide secure storage to an enclosure. A user interface and LCD visual display can be provided to permit convenient adjustment of system operational parameters. In certain embodiments, the electronic access control system includes master-slave control capabilities. In other embodiments, the electronic access control system includes inventory management capability. In still other embodiments, apparatus and methodologies provide the secure storage of the enclosure when the enclosure is being moved or otherwise transported from one location to another location. Various alternative arrangements may provide various alert features, as well as battery features which facilitate rapid replacement and/or reconfiguration.

Abstract: Gateway for providing controlled access from an entrance point to an exit point, having two wall elements defining a corridor in between the wall elements, and having a movable close off element or elements that have an open position and a closed position, whereby in the open position the corridor between the entrance point and the exit point provides a free passageway, and whereby in the closed position the corridor is closed off and passage from the entrance point to the exit point is prevented, wherein the movable close off elements or elements is/are embodied as at least one flexible band movable from within a wall element to at least in part outside that wall element, whereby in the open position the flexible band(s) is/are substantially rectilinear and positioned inside the wall element, and whereby in the closed position the flexible band(s) is/are bent to extend at least in part outside the wall element towards the other wall element to close up the passageway.

Abstract: Electro-mechanical and electronically controlled access devices are described for controlling access to a building, premises or area in a secure manner such that a subject who is deemed ineligible for access will be barred entry and may be optionally retained. The devices can contain multiple rotatable door panels, which can be positioned behind one another. The door panels can be controlled by mechanized arms or other control devices in order to control the passage through the device. The direction of flow through a device according to these embodiments is electronically controlled and may be changed at any point in time. At any instant in time, the flow through the device is unidirectional. Multiple devices can be stacked together to form clusters, which can be controlled according to traffic, time of day, or other factors.

Abstract: A method of operating a door assembly may include pivoting a first door about a first pivot axis from a closed position to an open position such that the first door acts as an inlet. The method may further include pivoting the first door to the closed position, and pivoting a second door about a second pivot axis from a closed position to an open position when the first door is in the closed position such that the second door acts as an outlet facing in a direction opposite the first door. The method may additionally include pivoting the second pivot axis about the first pivot axis when pivoting the second door, the second door being of a smaller size than the first door and forming at least a portion of the first door.

Abstract: An entry control apparatus includes a pair of spaced barriers forming a pathway therebetween. The barriers are positioned adjacent a doorway to control ingress into and egress from a building or the like. An arm is pivotally mounted and extends across the pathway and permits free movement of people in one direction and selectively restricts movement in the other direction. A motion sensor is provided and a motion control system is associated with the sensor. The sensor and motion control system cooperate to selectively allow the arm to move to a normally open position for normal traffic in an approved direction. In the event a person approaches the apparatus, as if to exit, or move in the wrong direction through the pathway, the sensor detects the movement and effects operation of the motion control system that locks the arm against movement to prevent movement through the passageway. An alarm system can be provided to alert personnel that an unauthorized movement through the pathway may be underway.

Abstract: An interlock vessel has an air-tight body having open opposing ends. A portion of the body is designed to fit into a decompression (hyperbaric) chamber, wherein a diver or a patient undergoing a decompression treatment is positioned. The opposing ends are closed by pivotally moveable doors and latching assemblies that retain the door in a closed position until the pressure inside the decompression chamber and the exterior of the chamber is equalized. Both latching assemblies are manually operated.

Abstract: A method and apparatus that controls access to a secured area using an automated gate controlled secured environment is disclosed. The method may include receiving an indication that an individual attempting to pass through a clearance area has not been authorized to pass through the clearance area, automatically moving one or more gates to create a channel for the non-authorized individual to be directed to a manual screening area, determining if the non-authorized individual has passed one or more sensor; wherein if the non-authorized individual has been determined to have passed the one or more sensor, then moving a gate located behind the non-authorized individual to enable other authorized individuals to pass through the clearance area while maintaining the channel created to the manual screening area, and preventing the non-authorized individual from gaining access to the automated gate controlled secured environment once the non-authorized individual reaches the manual screening area.

Abstract: A vending machine includes a storage/display region, a dispensing chamber including a product access opening, and an anti-pilfer device that prevents unauthorized removal of products from the storage/display region through the product access opening. A delivery door is provided which can be shifted from a closed position to an open position to enable the removal of products from the dispensing chamber. The anti-pilfer device includes a plate coupled to a lower portion of the delivery door. When the delivery door is moved from the closed position, the anti-pilfer plate shifts, over a guide element, into a position that prevents products from being withdrawn from the storage/display area. Preferably, the storage/display region and dispensing chamber are separated by a product door, with the anti-pilfer plate preventing the product door from opening when the delivery door is shifted from the closed position.

Abstract: A hyperbaric oxygen therapy system includes a pressure vessel containing a gas, an oxygen concentration measurement apparatus for monitoring the concentration of oxygen in the gas, an environmental control apparatus for controlling the temperature of the gas in the vessel, and a pressure/ventilation control apparatus for controlling the pressure of the gas in the vessel. The pressure vessel is capable of accommodating a patient. The oxygen concentration measurement apparatus includes an oxygen concentration analyzer and a plurality of gas lines connecting the oxygen analyzer to the pressure vessel. The pressure/ventilation control apparatus includes a pressure controlling valve, a pressure sensor, a ventilation valve, and a controller having a programmable pressure profile. The environmental control apparatus includes a scrubber, a heat exchanger and a blower located within the pressure vessel. A compressor for the system includes a compressor silencer.

Abstract: A substrate-treating apparatus includes: a plurality of modules disposed along a first direction, each of the plurality of modules having an inner space containable a substrate; a transfer unit transferring the substrate among the plurality of modules, the transfer unit including at least one track disposed along the first direction and at least one movable transfer chamber moving along the at least one track; and a gate valve fixed to each of the plurality of modules and combined with the at least one movable transfer chamber, wherein the at least one movable transfer chamber is atmospherically isolated from an exterior while moving.

Abstract: An interlock vessel having an air-tight body with opposing ends. A portion of the body is designed to fit into a decompression (hyperbaric) chamber, wherein a diver or a patient undergoing a decompression treatment is positioned. The opposing ends are closed by pivotally moveable doors and locking assemblies that retain the doors in a closed position until the pressure inside the decompression chamber and the exterior of the chamber can be equalized. The outer door has two locking systems: (a) an interlock system and (b) a safety/delay locking system. Both locking assemblies are manually operated.

Abstract: An assistant ceiling device designed to shield an escape hatch installed to a ceiling of an elevator cab is provided. The assistant ceiling device includes two elongated rail guides and a rectangular assistant ceiling plate. Each guide is installed at either side of the emergency escape hatch and has a length longer than that of the emergency escape hatch and shorter than that of the ceiling of the elevator cab. The assistant ceiling plate is laid on the rail guides to shield the emergency escape hatch. Each guide has a latching jaw so as to allow the assistant ceiling plate to be installed to the rail guides by laying both sides of the ceiling plate on the latching jaws.

Abstract: An active rinse shield designed to protect electrofill chemical baths from excessive dilution during rinse sprays on the semiconductor wafer. The shield uses overlapping blades to cover the bath, making a physical barrier between the bath chemistry and the wafer rinse water. The blades are interconnecting ribs that actuate around a common pivot axis. A linear mechanical actuator controls the blade movement, moving the top-most blade, which in turn, moves an adjacent lower blade. Each upper blade is interconnected to an adjacent lower blade by upper and lower ledges, a pivot boss and interlocking cut, and a curved ledge on each blade's body surface. The interconnecting features allow the blades to move one another out for extension or in for retraction. The interlocking blades are inclined above one another, forming grooves to redirect the rinse water away from the chemical bath.

Abstract: An interlock vessel has an air-tight body having open opposing ends. A portion of the body is designed to fit into a decompression (hyperbaric) chamber, wherein a diver or a patient undergoing a decompression treatment is positioned. The opposing ends are closed by pivotally moveable doors and latching assemblies that retain the door in a closed position until the pressure inside the decompression chamber and the exterior of the chamber is equalized. Both latching assemblies are manually operated.

Abstract: A method, system and computer program product for adaptively tracking the position of an entry portal, such as an automatic garage door. In accordance with the present invention a transmitter assembly senses and transmits the sensed position of the door position in a periodic manner at a predetermined transmit interval. A receiver assembly including a receiver module receives the transmitted door position signals and synchronizes the activation of the receiver module with the transmit interval such that the receiver receives the door position signals transmitted at the predetermined transmit interval. A receiver output indicator is then updated in accordance with the entry portal position determined by the received door position signal.

Abstract: A method, system and computer program product for adaptively tracking the position of an entry portal, such as an automatic garage door. In accordance with the present invention a transmitter assembly senses and transmits the sensed position of the door position in a periodic manner at a predetermined transmit interval. A receiver assembly including a receiver module receives the transmitted door position signals and synchronizes the activation of the receiver module with the transmit interval such that the receiver receives the door position signals transmitted at the predetermined transmit interval. A receiver output indicator is then updated in accordance with the entry portal position determined by the received door position signal.

Abstract: An Internet co-location facility security system integrates all the major components of the system and makes tracking information from these components available to co-located members on a database accessible from the web. A web-based interface allows co-located members to assign visitor access to the Internet co-location facility through the Internet from remote computer terminals. A visitor access and enrollment system allows a visitor to enroll only once in the system to be granted access to one or more other Internet co-location facility security systems around the globe.

Abstract: An Internet co-location facility security system and method integrates all the major components of the system and makes tracking information from these components available to co-located members on a database accessible from the web. A web-based interface allows co-located members to assign visitor access to the Internet co-location facility through the Internet from remote computer terminals. A visitor access and enrollment system allows a visitor to enroll only once in the system to be granted access to one or more other Internet co-location facility security systems around the globe.

Abstract: A protection suit, particularly a spacesuit, has an opening in a back portion of the spacesuit for entering and exiting the suit. The spacesuit is suspended on one side of a bulkhead (5?) so that a hole in the bulkhead is aligned with the opening in the back portion of the suit. The opening is closeable by a backpack (3) which fits through the hole in the bulkhead into a decontamination chamber (7) on the opposite side of the bulkhead. Two sealing and interlocking systems are used. Each system has two subsystems to provide a total of four sealing and interlocking subsystems. A first subsystem (4) connects the spacesuit to the bulkhead that separates a living and working space from an airlock. A second subsystem (6) connects a backpack to the spacesuit (1). A third subsystem (9) connects the spacesuit, preferably through the backpack (3), to a decontamination chamber (7). A fourth subsystem (12) connects the decontamination chamber to the bulkhead (5?).

Abstract: A system and device for use in a security area, and more particularly, a rack system and holding device for placing various objects that are processed through a security area are taught.

Abstract: A physical barrier system for barring entry for a vehicle having a clearance height through a door opening having a roll-up door has a physical barrier positionable in a first position visible to a driver of the vehicle and at least partially barring passage by the vehicle through the door opening, and in a second position not barring passage by the vehicle through the door opening, and a mechanism for moving the physical barrier from the first position to the second position. The system is characterized in that the mechanism for moving the physical barrier is initiated at a point at which the roll-up door has attained a height equal to or greater than the clearance height of the vehicle.

Abstract: An integrated rapid access entry/egress apparatus, system, and method for controlling and directing the movement of people or objects between unsecured and secured areas using a plurality of panels is provided. Sensors detect a person's approach and entrance into the system or apparatus. An approval means alerts a processor as to whether the person is approved or not approved. The panels move to direct approved persons to a secured area and not approved persons to an unsecured area so as not to impede the flow of traffic through the apparatus or system. The apparatus accommodates bi-directional traffic and provides an effective and efficient access system.

Abstract: A security entrance system for controlling access from an infeed area (98) to a protected area (100) has a structure (24) defining a chamber disposed between the infeed area, the protected area and a temporary containment area (201), with a first door (38) at the infeed area portion of the chamber, a second door (46) at the protected area portion of the chamber, and a third door (47) at the temporary containment area portion of the chamber. A person entering the protected area must pass through a contraband detector such as a metal detector (90,92) and enter the chamber. If no alarm was provided by the detector, the doors allow exit from the chamber into the protected area. If an alarm was provided by the metal detector, the doors only allow the person to enter the temporary containment area. The chamber is weighed or otherwise examined after at least some cycles of operation to assure that no contraband was concealed within the chamber.

Abstract: An access hatch having a frame containing an access opening, a grate, and a pull member pivotally coupled to the grate. The pull member has a proximal end and a distal end. The distal end is pivotally coupled to the grate near the far side of the grate, such that the proximal end is moveable away from the grate from a rest position. The proximal end is normally in the rest position when the grate is in the closed position. A worker, intending to open the grate, is prompted to stand at the near side of the grate and grasp the proximal end of the pull member, to pull the grate to the open position.

Abstract: An access hatch comprises a frame, a grate, and a pull member pivotally coupled to the grate. The frame contains an access opening. The grate has a near side and a far side. The near side is coupled to the frame for pivotal movement of the grate between a closed and an open position. In the closed position, the grate lies substantially in the access opening of the frame and blocks at least a portion of the opening. In the open position, the grate is oriented away from the opening of the frame to allow access through the opening. The pull member has a proximal end and a distal end. The distal end is pivotally coupled to the grate near the far side of the grate, such that the proximal end is moveable away from the grate from a rest position. The proximal end extends substantially to the near side of the grate when the proximal end is in the rest position. The proximal end is normally in the rest position when the grate is in the closed position.

Abstract: An access cover for a receptacle fitting includes a cover plate connectable to the fitting at a location overlying a receptacle carried by the fitting. An access door includes a first portion slidably connected to the cover plate for movement between open and closed positions. The access door also includes a second portion having a first end pivotally connected to the access door first portion. The second end of the door second portion pivots to a first position overlying the receptacle in response to movement of the access door first portion towards its closed position, and pivots to a second position at which the receptacle is exposed and accessible through the cover plate in response to movement of the access door first portion towards its open position. Pivot features are formed on the cover plate and/or the access door for imparting rotational forces on the door second portion as the door first portion is slid between its open and closed positions.

Abstract: A security entrance system for controlling access from an infeed area (98) to a protected area (100) has a structure (24) defining a chamber disposed between the infeed area and the protected area, with first doors (38) at the infeed end of the chamber and second doors (46) at the protected area end of the chamber. A person entering the protected area must pass through a contraband detector such as a metal detector (90, 92) and enter the chamber. If no alarm was provided by the detector, the doors allow exit from the chamber into the protected area. If an alarm was provided by the metal detector, the doors only allow the person to pass back from the chamber into the infeed area and away from the protected area. The chamber is weighed or otherwise examined after at least some cycles of operation to assure that no contraband was concealed within the chamber.

Abstract: This system is comprised of an insulated access door (6), which makes for the closure of the cold room (4) in coming into contact with the door frame (1) fixed onto the entrance (2) of said cold room (4), and a quick opening door made up of a moveable sheet (8) and the corresponding means of activation (9, 10). These means of activation are to be fixed to the exterior of the cold room (4). There is also a longitudinal slit (7) fixed onto the door frame (1) so that the sheet (8) can pass, this sheet (8) being able to effect the closure either in front of or behind the insulated door (6). The system includes a stopper device (7) which can close the slit (7) in order to minimize the temperature loss through same, and some means (71 and 161) of heating the slit (7) and some guides (16) on which the sheet (8) moves to its open or closed position.

Abstract: A sealable door assembly including a frontplate which faces an opening to be sealed, a backplate operatively coupled to the frontplate, and at least one inflatable member located between the frontplate and the backplate. When inflated, the inflatable member moves the frontplate into sealing engagement with the opening. In one embodiment the inflatable member includes one or more vacuum grade bellows. A movable mechanism moves the door assembly to selectively occlude the opening. Once the door assembly occludes the opening, the inflatable member is inflated and expands forcing the frontplate in a direction normal to the opening, thereby sealing the opening. The door assembly may be mounted within a pocket formed in an outer wall of a transfer chamber, and a sealing plate may be employed to form a gas tight region within the pocket. The gas tight region may be pressurized to enhance the door's seal of the opening.

Abstract: An access control vestibule having first and second locking single doors, an access control chamber formed between the two doors, magnetic locks for each of the doors, a metal detector located between the doors to detect for a weapon, the doors are manually operable and swing towards the outside of the chamber, the frame of the vestibule is rectangular and formed of a metal material, the door frames being formed of a metal material, transparent ballistic resistant panels are mounted in the side walls of the chamber and the door frames, ultrasonic sensors are positioned above the first and second halves of the chamber to detect for the presence of more than one person within the chamber or for the presence of an object such as a weapon on the floor of the chamber, an ultrasonic sensor located above the metal detector, a touch-sensitive pad located on the inside of the exit door of the chamber, a control device to prevent both doors from being opened at the same time and to prevent the second or exit door from

Abstract: An access control chamber security system with a security chamber having an aluminum frame and an entrance door and an exit door, a metal detector located within the access control chamber to detect a weapon being carried within the chamber, locks on the doors and control means to prevent the doors from being opened at the same time or prevent the exit door from opening when a weapon is detected, and including improvements such as a side frame member with a cutout section having an insulated member placed therein to provide an open electrical loop in the side frame member, the metal detector having a plurality of coils located in a plurality of zones, a three second time delay from when the manually operated exit door is opened to when the lock on the exit door is re-activated, ballistic fiberglass disposed within a hollow section of the aluminum frame members, floor contact pads with nitrogen disposed within the pads surrounding the metal plates formed therein, a floor contact pad having a plurality of induc

Abstract: An adjustable threshold protector to be used during the construction of a house or building is an apparatus made of durable material covering the threshold, removably attached to the threshold and which can be adjusted in width and length by removable sections to fit a wide variety of doorway thresholds.

Abstract: A tape cartridge access port includes frames defining a series of tape cartridge magazine cavities for directly loading magazines filled with tape cartridges with the labels on the front surfaces of the tape cartridges oriented towards the robotics of an automated cartridge library. The tape cartridge access port has safety doors which prevent access by an operator to the robotics of the automated cartridge library while allowing the magazines and the tape cartridges to be accessible to the operator when the robotics are in operation on other tape cartridges. The safety doors are triggered and released by a magazine loaded into the tape cartridge access port. The tape cartridge access port also has an outer door panel locked and unlocked by a library management unit of the automated cartridge library to prevent the operator and the robotics of the automated cartridge library from handling a magazine at the same time.

Abstract: A filtering gate for the protection of a site includes two boxes arranged side by side and forming two corridors allowing communication between an inside of the site and an exterior of the site. A first and a second pair of leaves are located at an inside front and an external front, respectively, of the boxes arranged side by side, the leaves of each pair being movable parallel with respect to each other and transverse to a flow passing in the corridors, each leaf being movable independent of the other leaf of the pair, between a first position in which it blocks passage through one of the corridors and a second position in which it blocks passage through the other of the corridors.

Abstract: Pass through interlock systems for sanitized environments or "clean rooms" are disclosed which allow for the transfer of objects from outside the sanitized environment without introducing undesirable contaminants therein. The system comprises a frame, box like structure juxtaposed on the back end of a frame, two doors oppositely disposed to each other, an electric mortise lock with solenoid or electric motor, first and second sensors and an electronic controller with power source, that is programmed to automatically lock one door when the opposite door is opened.

Abstract: An entrance device for placement in a facade of a building includes at least two revolving doors. Each of the revolving doors has an input section and an output section. A sliding door provides closure of the input and output sections of the two revolving doors. The sliding door is disposed between the two revolving doors.

Abstract: A rapid access door system is provided wherein authorized individuals may pass through the door system and wherein unauthorized individuals are blocked from entering a secured area past the doors and are automatically rerouted to an unsecured area for further processing without blocking the door system and impeding the flow of other individuals entering the door system. The door system uses modular units employing sensing means and a specially configured door which door automatically provides the rerouting of persons in the system. The sensing means determines, among others, the number of persons in the system, whether the door is opened or closed, whether a person has exited the system to particular areas, alerting speakers and signage, with the above information being used in conjunction with the door system to provide a highly efficient and effective rapid access portal system.

Abstract: A motor-vehicle gate assembly for a driveway includes, in addition to the gate and an actuator for opening and closing the gate, a secondary barrier operable in response to operation of the gate to prevent motor-vehicle access to the gate when the latter is closed and to permit access to the gate when the latter is open. The barrier may be a flexible line which extends across the driveway and which is movable between a raised position above the driveway and a lowered position in a gutter in the surface of the driveway. Movement of the barrier between its raised and lower positions can be effected by a mechanical connection between the barrier and the gate.

Abstract: Pyrolysis system and method wherein used batteries other than lead-acid batteries for reclamation and recovery of the constituents therein or environmentally safe disposal are placed in rail carts and moved on rails through an entry zone into a central heating zone of a pyrolysis chamber maintained under a negative pressure and then into an exit zone.

Abstract: A transaction security system is disclosed which provides protection and security for transaction customers while conducting their business, such as those visiting a remote bank automatic teller machine. The enclosure can accommodate either or both vehicular and pedestrian traffic. A system of detectors and operators open the appropriate door for ingress of an authorized customer and maintain the doors to the facility closed and locked while the customer is transacting business. When the customer exits the facility, door opening mechanisms are again enabled to offer admittance and service to the next authorized customer.

Abstract: A circular outage cover of light-weight composite material is normally situated in a standby position adjacent to the opening at the outer end of the equipment access tunnel of a nuclear reactor containment vessel. In case of an emergency during an outage, the outage cover can be quickly rolled into position and engaged with a transition ring provided as an extension of the tunnel by retractable retaining shoes on the retaining ring and an inflatable seal carried by the outage cover. The ability of the outage cover to be closed quickly makes it possible to keep the operational cover open throughout most of the outage, and reduces the overall outage time. Hydraulic, pneumatic and electrical services pass radially through the transition ring and do not interfere with closure of the outage cover. An auxiliary diaphragm cooperable with the transition ring is used for pressure testing of the outage cover.

Abstract: A fail-safe access control chamber security system (ACCSS) including a bullet-proof access control unit (ACU) having an entrance chamber and an exit chamber. The entrance chamber includes a first interlocking door providing passage from a non-secure area into the entrance chamber and a second interlocking door providing passage from the entrance chamber to a secure area. The entrance chamber includes a first floor mat and a second floor mat located between the first and second doors to determine the location of a person within the entrance chamber. A metal detector is provided between the first and second floor mats and the system includes arrangements for preventing entrance into the secure area if a weapon is present. Control circuitry prevents the simultaneous opening of the first and second doors. The exit chamber includes a third interlocking door for providing passage from the secure area into the exit chamber and a fourth interlocking door providing passage from the exit chamber to the non-secure area.

Abstract: A security system controls two sliding (or other) doors 6 and 7 to allow only one door to be opened at a time. A pivoted bolt 13 is pushed by a mechanical link 16 into the opening-path of the door 6 when a lever 15 that abuts the leading-edge of the other door 7 pivots back upon opening movement of that door. A corresponding mechanism includes a link 26 which couples a pivoted bolt 23 to a lever 25 that abuts the door 6, such that the bolt 23 blocks opening of the door 7 when the door 6 begins to open. The mechanical links 16 and 26 may be replaced by hydraulic links.