Abstract: A system for determining the position of a bolt in a door including a locking mechanism for moving the bolt between a first locked position wherein the door is secured in position within a door frame and a second unlocked position wherein the door is moveable within the door frame. The position of the bolt is determined by a determining means and a signal indicative of the position of the bolt is generated. A transmitter is connected to the determining means and transmits a signal to a means for indicating to a user the position of the bolt. The indicating means includes a processor and receiver and wherein the transmitter transmits the signals generated by the determining means and the receiver receives the signal and provides the signal to the processor for determining the position of the bolt and generating a signal indicative of the determination.

Abstract: A portable security alarm system including a movement detecting and signal transmitting member for mounting on or proximate to the object whose movement is to be detected, a signal receiving and alarm generating member for receiving a signal from the movement detecting and signal transmitting member and producing a security response, a remote control for actuating and deactuating the signal receiving and alarm generating member, an environmental monitoring member for sensing an environmental condition and providing a signal to the signal receiving and alarm generating member, a visual information gathering member for gathering visual information and providing a signal to the signal receiving and alarm generating member, an audio output member for receiving a signal from the signal receiving and alarm generating member and generating an audio output, and components for delivering a security notification to remote recipients.

Abstract: A security seal for a freight car, freight container or other enclosure. The seal has an electronic timepiece which displays the time and date and is preset at an established reference time. A cut-resistant strap is secured at one end to the seal and has a latch at the other end. When the latch is passed through a lock and is engaged in a receiver in the seal, the strap is locked in place and the power to the timepiece is interrupted providing an indication of the time and date on which the lock was sealed. Other information may be applied to the seal at the time of sealing such as the identification of the individual responsible for the sealing.

Abstract: An independent back memory module is disclosed that is permanently installed at a security gate installation. The memory module has a nonvolatile memory and it is positioned within the system so that it automatically has a communication link with any gate controller installed. The memory module records a history of the operation of the system. The memory module retains operational information regarding the system and information identifying the gate controller, gate controller board and the setup of the particular installation. The memory module also retains information regarding changes made in the setup of the system. Whenever a new gate controller board is installed information in the memory module is transmitted to the new controller board.

Abstract: An improved battery operated combination burglar alarm and door chime mounted to the inside of a door from where the alarm and chime modes are selected. A dead bolt slide cooperates with a jamb plate fastened to the door frame to manually arm the device from the inside with the door closed. Opening the door activates the dead bolt and sounds the alarm. A magnetically sensitive switch within the device cooperates with a magnet fastened to the jamb plate and further cooperates with a mode selection switch to effect either the chime mode or delayed alarm mode when the door is opened. The delayed alarm mode is activated with the door open to permit pre-arming the device followed by automatic arming of the device when the door is closed.

Abstract: The invention relates to an operator controller for controlling an operator for a powered closure of a building or enclosure, more particularly a door operator controller, including an apparatus for informing a user as to the operating status of the operator controller and/or of the operator to be controlled or of the closure to be powered, especially as to a status requiring user intervention. To avoid unnecessary service calls it is proposed that the operating status information apparatus comprises an apparatus for outputting a combination of a warning signal and message clearly indicating the operating status, preferably without the assistance of any further information. The invention also relates to an operator provided therewith as well as to a method of operating same.

Abstract: A remotely controllable door operator apparatus is mountable to a doorframe structure and a movable door to control door movement between a closed position and an opened position. The operator apparatus includes a motor assembly, a linkage device, a slip clutch assembly, and a controller unit. The motor assembly has an output shaft, and the motor is mountable to one of the door and the door frame structure. The slip clutch assembly is coupled between the output shaft and the linkage device to transfer torque therebetween, and can slip to enable manual and remote operation of the door. The controller unit is coupled to the motor assembly to activate the operator apparatus to close the door in manual operation, and to open and to close the door in response to at least one remote signal. A method of using the remotely controllable automatic door operator and closer is also disclosed.

Abstract: A security system for detecting and expelling external intrusions at individual windows is provided. The security system includes an intrusion detection transmission system (100) having a human body detection sensor (110), an infra-red sensor (120), a switching unit (130) for connecting the detection signals from the sensors (110 and 120), and a wireless transmitter (140) for encoding and wirelessly transmitting the signal transmitted from the switching unit (130), and a central processing system (200) including a wireless receiver (210) for receiving, and demodulating the wireless receiver (210) for receiving and demodulating the wireless transmission signals from the wireless transmitter (140) in the intrusion detection transmission system (100), and a home switching unit (220) for controlling operations of a home automation unit (400) and a warning siren portion (240) according to the outputting signal of the wireless receiver (210).

Abstract: A safety system that is configured to enhance the ability of individuals to identify points of egress in the case of actual fires or emergency situations. The safety system may include a power source, memory, a central processing unit (CPU), sensor(s), audible indicator(s), light source(s), switch(es), camera(s), a transceiver, a microphone, impact tool(s), and aromatic element(s). The power source may be any suitable AC or DC power source. The memory, CPU, audible indicator(s), light source(s), switch(es), camera(s), transceiver, microphone, impact tool(s), and aromatic element(s) may be any types well known in the art. The safety system may also include a modem configured to wirelessly or non-wirelessly transfer data to/from the safety system.

Abstract: Methods and apparatus for sensing barrier position in a barrier movement system are disclosed. Electrical apparatus is connected to the barrier and generates a barrier position signal representative of barrier positions which may be used by a controller to detect barrier position. The electrical apparatus can be manually adjusted to reflect a first barrier position such as a closed position. Other barrier positions can be sensed by comparing the barrier position signal to other manually adjustable position signals.

Abstract: A security system for a goods-carrying compartment such as of a vehicle is arranged to indicate the sealed status of an access door 40 to the compartment. Following loading of the compartment, the system is used to seal the door closed by passing a security cable 34 through components 46, 50 of a lock mechanism associated with that door. The cable 34 is re-entered into the system housing 30 and then, using a key inserted into a security switch 14, the system is activated to show proper sealing. An interrogation switch 12 may be pressed to illuminate LED 22 if the door 40 has not been opened following sealing or LED 24 if the door has been opened and not properly re-sealed with a key. Two different keys may be provided, one for use with the initial sealing of the compartment and the other for re-sealing by an authorized person such as a driver, so long as the compartment was opened for a legitimate purpose on route between dispatch and the ultimate destination.

Abstract: A door entry security device used in a security system including a control panel, the door security device in a housing suitable for mounting within a recess of a doorjamb or door of a premises. In the housing is a lock position detecting switch, adapted to detect the position of a lock mounted on a door as being either locked or unlocked, a door position detecting switch adapted to detect the position of the door as being either open or closed, and processing circuitry adapted to generate a security system disarm signal when (1) the position of the lock has transitioned from a locked state to an unlocked state, (2) the door is closed at the time that a predefined time period has elapsed since the position of the lock transitions from a locked state to an unlocked state, and (3) the door has been opened after that predefined time period has elapsed. The door entry device also has a data transmitter for sending the security system disarm signal to the control panel.

Abstract: A portable security alarm system which can be installed on a temporary basis and removed from an object whose movement is to be detected including a motion detecting and radio signal transmitting member for mounting proximate the object whose movement is to be detected, a member for selectively coupling and decoupling the motion detecting and radio signal transmitting member relative to the object whose movement is to be detected, a combined radio signal receiving and alarm generating member for receiving a signal from the combined motion detecting and radio signal transmitting member and producing an alarm, a remote control for actuating and deactuating the radio signal receiving and alarm generating member, and components for providing object identification information identifying the object whose movement is to be detected and distance measurement information for measuring the distance moved by the object.

Abstract: A security system for constraining the degree to which a door leaf (11) may be opened; the system being selectively activated from an inoperative position in which it does not block the opening and closing of the door leaf (11), into and out of an operative position in which it does so block the opening of the door leaf (11) beyond a predetermined constrained degree; the system being characterised in that it comprises: a chassis (14) adapted for mounting, in use, adjacent an opening edge of a door leaf (11); an electric actuator (17, 28, 36) mounted on the chassis (14); an arm (18, 29, 37) operating in conjunction with said actuator (17, 28, 36) so that the actuator drives the motion of said arm (18, 29, 37) without any lost motion mechanism.

Abstract: An automatic door system capable of distinguishing between a door closing action for when an object leaves a prescribed area, which results from a “signal discontinuation due to the exit of an object”, and a door closing action for when an object remains stationary within the area for a certain period of time, which results from a “forced signal discontinuation in the presence of a stationary object”. Regarding the latter case, the automatic door system protects a person who stops in the area by setting the door to close at a low speed and/or issuing a vocal warning. The door closing action of the automatic door system can thereby reduce the risk of hitting the person with the door.

Abstract: A security alarm system that may be selectively armed or disarmed when monitoring a protective premises is described which utilizes the position of an entry door to determine whether the security system should be armed or disarmed. The security system comprises (i) an entry door for permitting ingress to the protected premises from the outside of the entry door and egress from the protected premises from the inside of the door; (ii) means for selectively closing and opening the entry door; and (iii) a switch having a first state indicative of the entry door being in a closed position and a second state indicative of the entry door being in an open position wherein, when the switch is in its first state, the security system is armed and, when the switch is in its second state, the security system is disarmed.

Abstract: A crib gate position indicator for use with a baby crib having a movable gate that can be placed into an open or a closed position. The crib gate position indicator includes a first portion that is mounted to the moveable gate and a second portion that is mounted to the frame of the crib. One of these two portions wirelessly detects the presence of the other when the moveable gate is closed. When the moveable gate is opened, the non-detection of the other member activates an indicator, visual or audible, at one of those members to alert a nearby caretaker that the crib gate is open. Alternatively, this indicator can be remotely-located and may even include a speaker for also conveying both a crib gate open condition as well as the sounds of the baby in the crib. Several alternatives of non-contact detection are disclosed for these first and second portions. Also, the crib gate position indicator can be applied for use with hospital beds, or doors and gates in general.

Abstract: A method and device for providing status of a security system to a user by a remote indication device in response an external stimulus. A status request trigger signal is generated as a result of the stimulus, and status data is then retrieved from an externally located central control unit in response to the status request trigger signal. The status data is then presented via the remote indication device to the user, either by providing a visual display or sounding an audible representation of the status data. The external stimulus may be the motion of a user within proximity of the remote indication device, and the generating of a status request trigger signal may includes the detecting of the motion of the user by a motion detector such as a PIR or a microwave detector.

Abstract: The invention is for a vandal resistant latch/starter-interlock assembly for a bus door. In the assembly of the invention, the alarm and the starter-interlock are part of the same assembly. The assembly includes box through which a modified latch bolt extends laterally. The latch bolt is locked by a vandal lock. When unlocked, the latch bolt slides or moves to allow the door to be opened. The alarm and starter-interlock are activated after unlocking the vandal lock. Typically, the alarm is activated when the latch bolt is moved, usually by moving a door latch. While the starter-interlock can also be activated by moving the latch bolt, it is preferably activated by unlocking the vandal lock.

Abstract: A mailbox and counter combination device for determining a number of times a mailbox has been opened includes a mailbox having an opening extending therein. A door is hingedly coupled to the mailbox such that the door may be selectively positioned in an open position or a closed position with respect to the opening. A sensor is adapted for detecting when the door is moved from the closed position to the open position. A processor is operationally coupled to the sensor and is adapted for recording a number of times the door is moved to the open position.

Abstract: Emergency release burglar bars having electronic locks that are actuated remotely by a signal generated by a smoke detector alarm provide security and will automatically unlock upon detection of smoke in the premises without human intervention to allow safe exit from the premises, and easy access and entry to the premises by emergency personnel. When the smoke detector/alarm senses smoke in the premises, its alarm is “powered on” to sound the alarm. A relay connected with the alarm circuit is activated simultaneously with the sounding of the alarm, which activates an “unlock” switch of a transmitter connected with the relay to transmit an RF “unlock” signal. Receivers on each of the electronic locks receive the transmitted signal, and activate an actuator, which actuates a mechanism to retract the bolt of the lock, allowing the burglar bars to be swung open.

Abstract: A security alarm with a wired remote triggering device consists of a triggering switch with two spring blades and a flexible sleeve tube holding both spring blades together. The security alarm with a strap is hung on the doorknob inside a door or placed inside a drawer, and the triggering device is set up from outside of the door or the drawer by pulling off the flexible sleeve tube. The two spring blades will thus be clipped in a gap between the door and its frame to keep the alarm circuitry open. When any unauthorized person opens the door or the drawer, the triggering device will fall off from the gap; thus the two spring blades will automatically open to keep the alarm circuitry in close status so as to activate the alarm, so the theft deterrent purpose is consequently achieve.

Abstract: An open window security lock consisting of a staff having a suction cup for attachment of the staff to the window which allows a sliding window sash to open a small amount for ventilation but not opening enough to admit an intruder. The staff upper end has a switch to sound an alarm if the upper end is moved away from touching the fixed upper frame. An alarm switch can be a displacement detector, motion detector or vibration detector. The staff length is adjustable. A length clamping can be a detent button, staff wall set screw, metal collar with a set screw, hose clamp, or an eccentrically pinned lever. The alarm may include wireless transmitter communicating with a wireless receiver.

Abstract: A method and apparatus for detecting movement of an infrared-radiating object within a monitored space is provided. The method of includes exposing the monitored space to a passive infrared sensor having a first sensor element generating a first polarity signal when its field of view senses an infrared-radiating moving object, and a second sensor element generating a second polarity signal when its field of view senses an infrared-radiating moving object and determining the direction of movement of the detected object from the relative sequential order of the first and second polarity signals, for example for detecting intrusions in the monitored space to determine whether the movement direction is a hostile direction or a friendly direction.

Abstract: A system and method for constructing a security system for a building using at least one RFID reader to communicate with at least one RFID transponder to provide the radio link between each of a number of openings and a controller capable of causing an alert in the event of an intrusion. The RFID transponder is connected to an intrusion sensor. The controller preferably communicates with the RFID reader using a power line communications protocol. The RFID transponder can contain a battery. The RFID reader contains means for transferring power to an RFID transponder for the purpose of charging any battery. The security system can contain more than one controller, whereby the RFID reader can communicate with more than one controller.

Abstract: Door sensor(s) 6, 7 may be attached to door body or bodies 3 of automatic swing doors. Door sensor(s) 6, 7 may be equipped with door position detecting means 67, 77 comprising geomagnetic sensor(s); sensor(s) 6, 7 being itself or themselves capable of detecting position(s) occupied by door body or bodies 3 during opening and/or closing thereof. During opening and/or closing of door body or bodies 3, determination may be made as to whether detected object(s) are object(s) intended for detection; and in the event that object(s) are object(s) intended for detection, opening and/or closing of door body or bodies 3 may be stopped, slowed, and/or reversed in correspondence to detected position(s) occupied by door body or bodies 3 during opening and/or closing thereof.

Abstract: A portable security alarm system including a movement detecting and signal transmitting member for mounting on or proximate to the object whose movement is to be detected, a signal receiving and alarm generating member for receiving a signal from the movement detecting and signal transmitting member and producing a security response, a remote control for actuating and deactuating the signal receiving and alarm generating member, an environmental monitoring member for sensing an environmental condition and providing a signal to the signal receiving and alarm generating member, a visual information gathering member for gathering visual information and providing a signal to the signal receiving and alarm generating member, an audio output member for receiving a signal from the signal receiving and alarm generating member and generating an audio output, and components for delivering a security notification to remote recipients.

Abstract: A pre-injury contact warning device for a front door of an automatic dishwasher or oven, the front door being openable to a generally horizontal very low position above the floor. In one embodiment, the device includes a housing attachable to a surface of the front door. A warning signal emitter sensorially perceptible by a person receives electric power from a miniature storage battery mounted within the housing. An angle-sensitive switch mounted in the housing is operably interconnected between the warning signal emitter and a proximity sensor. The switch is open and the proximity sensor and the warning signal emitter off when the front door is closed, while the switch is closed and the warning signal emitter is armed and on standby when the front door is open. When a person gets within a predetermined distance from the open door, the proximity sensor activates the warning signal emitter.

Abstract: A wall control unit for a movable barrier operator sends baseband signals over a wire connection to a head unit of a movable barrier operator to command the movable barrier to perform barrier operator functions. The wall control unit has a wall control unit port for connection to the wire connection. A first switch sends a barrier command signal to the head unit commanding the head unit to open or close a movable barrier. A second switch commands the head unit to provide energization to a light source. An infrared detector causes a command signal to be sent to the head unit to control the illumination state of the light source.

Abstract: A security alarm system that may be selectively armed or disarmed when monitoring a protective premises is described which utilizes the position of an entry door to determine whether the security system should be armed or disarmed. The security system comprises (i) an entry door for permitting ingress to the protected premises from the outside of the entry door and egress from the protected premises from the inside of the door; (ii) means for selectively closing and opening the entry door; and (iii) a switch having a first state indicative of the entry door being in a closed position and a second state indicative of the entry door being in an open position wherein, when the switch is in its first state, the security system is armed and, when the switch is in its second state, the security system is disarmed.

Abstract: The present invention generally relates to a method of monitoring a safe comprising the steps of providing (402) an electronic lock for the safe; receiving (404) information from a security device in an area proximate to the safe; and making (406) security information from the security device during a transaction with the electronic lock. According to another aspect of the invention, an apparatus for monitoring a safe comprises an electronic lock (144) incorporated in a safe; a control unit (142) coupled to the electronic lock; and a security system (148) coupled to the control unit.

Abstract: In a first aspect, the present invention is a method, apparatus, and system for detecting a change in position of a door or a window in an alarm system with a singular housing having a magnetometer for monitoring the magnetic field of the earth, and a microprocessor for detecting a change in the position of the singular housing with respect to the magnetic field of the earth. The microprocessor generates an alarm signal upon detecting the change, and causes the alarm signal to be transmitted, by wireless transmission, to a remote receiving station. The device may also be used to determine if an object that it is affixed to has been moved, such as for a theft alarm for an object such as a painting. In a second aspect of the invention, a gravitational sensor is used to monitor the gravitational field of the earth and determine if an associated object or person has been moved with respect to the gravitational field, thus providing motion detection and signaling an alarm.

Abstract: A portal access control system is disclosed for preventing unauthorized entry from a public area into a secure area. The system utilizes input from several different sensors, including: passive IR sensors, motion detectors, photo detectors and authentication devices. Also, the passage time of an individual through the open portal may be determined. Based on selected combinations of one or more sensor inputs, the portal access control system can detect passage into the secure area by a lone perpetrator and also by tailgating behind an authorized user.

Abstract: An alarm device including an acoustic pressure sensor (10) delivering an analog signal to first amplifying means (12) and to second amplifying means (14), a first comparator (34) where the positive input is connected to the output of the second amplifying means and where the output delivers a warning signal to alarm means (26, 28) when there is a break-in or an attempt at breaking in, and self-adjusting means including a microprocessor (26) programmed to deliver a digital signal at the negative input of the first comparator where the pulses have a variable width which increases in accordance with the duration and the importance of the atmospheric disturbance so as to automatically increase the alarm device triggering threshold and reduce its sensitivity when the acoustic sensor detects an atmospheric disturbance such as wind.

Abstract: A door lock includes a body, a locking device installed in part of the body to lock and unlock an entrance door and having a first handle provided at an inner side of the entrance door, a lock assembly engaged with the first handle when a normal key is inserted, and a locking member actuated by rotation of the first handle, a first sensing device which becomes an ON state as the locking member protrudes outside the locking device and an OFF state as the protruded locking member retreats, a speaker generating alarm when the first sensing device senses an intruder, and a power portion supplying electric power to the first sensing device and the speaker, wherein holes, through which the first handle and part of the first sensing device are exposed, are formed at an outer surface of the body, a cover is provided at a portion corresponding to the power portion, and the speaker is installed on the body so that sound is emitted out of the body.

Abstract: A motion-sensitive pest and varmint deterrent device used to detect and ward off unwanted pests and varmints from a garden, the device having a detection branch, and a sprinkler branch. A motion detector and a light are positioned at the top end of the detection branch. The sprinkler branch has a sprinkler head attached at the top end. The bottom end of the sprinkler branch is attached to a horizontal pipe attached to a water hose. The sprinkler branch has a solenoid valve in communication with the motion detector which selectively controls the flow of water to the sprinkler head. Reservoirs containing gardening substances are connected to and positioned along the horizontal pipe between the bottom portion of the sprinkler branch and the water hose. When movement is detected by the motion detector, the light is activated and the solenoid valve initiates water flow and the sprinkler head disperses water onto the surrounding area, thereby scaring off unwanted pests and varmints.

Abstract: An alarm chip (10) and the use of the alarm chip (10) for giving warning of burglary or undesired entry into buildings, installations or structures, preferably by so-called shell-protection of the building, installation or structure, the alarm chip (10) detecting, by means of an associated accelerometer, motions/vibrations in the object to which the alarm chip (10) is fixedly arranged, the object being formed of e.g. a window (2), a door, possibly a frame or casing connected to the window (2) or door, wherein the motions/vibrations are converted by means of the accelerometer into an outgoing flow of acceleration values, which are further processed, by means of a processor in a signal processing circuit, in which, by means of algorithms, the acceleration values are recognized and separated into either output alarm signals or output non-alarm signals, and in which output signals may be coded/encrypted, so that each alarm chip (10) has i.a.

Abstract: A security system for detecting and expelling external intrusions at individual windows is provided. The security system includes an intrusion detection transmission system (100) having a human body detection sensor (110), an infra-red sensor (120), a switching unit (130) for connecting the detection signals from the sensors (110 and 120), and a wireless transmitter (140) for encoding and wirelessly transmitting the signal transmitted from the switching unit (130), and a central processing system (200) including a wireless receiver (210) for receiving, and demodulating the wireless receiver (210) for receiving and demodulating the wireless transmission signals from the wireless transmitter (140) in the intrusion detection transmission system (100), and a home switching unit (220) for controlling operations of a home automation unit (400) and a warning siren portion (240) according to the outputting signal of the wireless receiver (210).

Abstract: A sound producing device adapted for use in a public or private rest room. The device is located within the room, preferably mounted on a wall of a cubicle in the rest room and can be activated to produce a sound upon a person entering the cubicle such that the sound so produced covers up the normal bodily noises of a person using the rest room. In one embodiment, there are a plurality of cubicles with a single sound producing device that emanates sound into each of the cubicles and there is a sensor associated with at least substantially all of the plurality of cubicles.

Abstract: A security device and a security system are provided which require no power supply wires and thus can be installed at any location where a burglary prevention measure is necessary. The security device comprises: a generator member having a piezoelectric element and an impact member, the impact member striking against the piezoelectric element to generate electricity; an alarm unit to issue an alarm by using the generated power; and a control member to control an operation of the alarm unit; wherein one of the generator member and the control member is mounted on a door or window and the other is mounted on a nearby portion that parts from the door or window as the door is opened; wherein when the door or window is opened, the control member causes the alarm unit to operate.

Abstract: A method and an apparatus in clamp protection systems (1-3) for doors and eventually existing footsteps (7) cooperating therewith, comprising a digital camera (4) at actual doors (1-3), which camera (4) is connected to a central computer (5) having a monitoring screen (5) to which also the ordinary opening and closing electronic means (6) are connected. Each camera transmits images at short intervals to the monitoring screen (5), each image is frequently compared with a reference image stored in the monitoring screen (5), and whereby alarm is given as soon as an image received from a camera (4) differs from the reference image of the monitoring screen (5), whereby the door (1-3) in question is opened or is maintained closed until the monitoring screen (5) observes that the received image coincides with the reference image.

Abstract: An automatic security enhancement system can automatically increase the security of the system when necessary. The system has at least two different states with each state has different security level. The state with low security could be changed into a state with higher security automatically when the system detects someone try to break the system. The state with low security could also be instructed to change into a state with higher security. However, a state with higher security will be changed into a state with lower security only when the system is commanded to do so.

Abstract: A security system for a building facility where radio frequency tamper-indicating devices are placed in the area of the facility to detect movement and/or relative movement of components under circumstances where such movement may indicate a security risk. One example is where there are ceiling tiles in a false ceiling which may be moved during a covert entry. An RF damage indicating device is placed at juncture locations of the tiles and tendrils of the tamper-indicating devices are positioned so that movement of one of the tiles will break the tendril and cause an alarm signal to be given. In other arrangements, tamper-indicating devices could be attached to security-sensitive objects, containers for the same, and building-related components so that movement of these security-sensitive objects would also trigger an alarm.

Abstract: An open window security lock, subject of this petition for letters patent, consists of a staff having means for attachment of the staff to the window. Attachment means may comprise one or more suction cups. The suction cup is connected to the staff and attached by suction to a window. Typically the staff is mounted on the vertical surface of a window pane with one staff end touching an immobile portion of the window frame or touching an upper sash which moves independently of the sash containing the glass on which the suction cup is attached. The other staff end may be free or may be touching a mobile portion of the window frame at its maximum user selected safe protection open value. The user selected safe protection open value is of sufficiently small opening to protect the window interior space from entry by an intruder from the exterior space. The staff prevents forcing the partially open window any further open to gain access to an area.

Abstract: The invention is for a vandal resistant latch/starter-interlock assembly for a bus door. In the assembly of the invention, the alarm and the starter-interlock are part of the same assembly. The assembly includes box through which a modified latch bolt extends laterally. The latch bolt is locked by a vandal lock. When unlocked, the latch bolt slides or moves to allow the door to be opened. The alarm and starter-interlock are activated after unlocking the vandal lock. Typically, the alarm is activated when the latch bolt is moved, usually by moving a door latch. While the starter-interlock can also be activated by moving the latch bolt, it is preferably activated by unlocking the vandal lock.

Abstract: An emergency exit monitor system for school buses provides both an audible and visual signal to the driver when one of the emergency exits is opened. The school bus comprises a plurality of emergency exits. One or more sensors detect when an emergency exit is open. A monitor communicates with the sensors and provides a visual and audible signal to the driver when a sensor detects an emergency exit is open. In one embodiment, the monitor additionally identifies which of the emergency exits are open.

Abstract: A warning indication system and method of using the same in conjunction with a cargo door of an aircraft. The cargo door is positionable in an opened position; a closed position; a closed and latched position; and a closed, latched, and locked position. The method includes outputting first and second closed signals when the cargo door is in the closed position; outputting first and second latched signals when the cargo door is in the closed and latched position; and outputting first and second locked signals when the cargo door is in the closed, latched, and locked position. All of the signals are then analyzed to positively determine the position of the cargo door, while minimizing the probability of false indications. Various warnings are generated in response to the combination of signals received. The apparatus employs a dual logic system and redundant sensors to provide differing warnings dependent on the phase of flight.

Abstract: An emergency control system for opening or closing a gate resides within a controller for regulating operation of the opening/closing mechanism of the gate. A safety station is in communication with the controller and includes means to signal the emergency control circuit to open or close the gate by using either of two pushbutton switches. Sensing means which detect an unsafe condition in the area of the gate such as human entrapment is connected to the controller and initiates an alarm mode operation of the controller when an unsafe condition is detected and turns on a sound alarm. Pushing either of the safety button switches turns off the sound alarm and moves the gate. Movement of the gate is stopped if the pressed button is released while the gate is in motion which otherwise continues to its limit. The emergency control circuit is responsive to input signals from the safety station only when the controller is in the alarm mode.

Abstract: This invention relates to novel systems for testing guards closures or barriers used on hazardous machinery for personnel protection. The guards are tested separately or in conjunction with safety devices which may include interlocks, locking mechanisms and latching devices. The testing process proceeds without having to shut down the machine on which the guarding system is mounted. Testers are incorporated in the process for establishing the integrity of the safety devices and for executing self-testing. Also included are various novel devices that are unable in such systems.

Abstract: An improved hoistway access detection system including three safety chains, one for monitoring door position on the even numbered floors, one for monitoring door position on the odd numbered floors, and one for monitoring the position of the pit door, wherein an elevator car is slowly moved to the alternate floor upon detection and subsequent closure of an open pit door and any landing door.