Abstract: Both a motion detector and a presence detector receive doppler shifted reflected microwave radiation to detect the passage of a person or an animal in a field of view. The motion sensor is adapted to detect the passage of a person or an animal near a doorway and to actuate the doorway in response thereto, to permit the passage of the person or animal thereto. The presence detector detects "swaying motion" of a person or an animal in a field of view much closer to the location of the sensor as its gain is much lower than that of the motion detection channel. In addition the presence detector is activated only in the event the motion sensor is deactivated. The output signals from the motion sensor and presence sensor are gated through an OR gate and to a timer to activate the door opener.

Abstract: Apparatus for sensing intrusion into a predefined perimeter comprises means for producing a coherent pulsed light, which is injected into an optical sensing fiber having a first predetermined length and positioned along the predefined perimeter. A backscattered light in response to receiving the coherent light pulses is produced and coupled into an optical receiving fiber. The backscattered light is detected by a photodetector and a signal indicative of the backscattered light is produced. An intrusion is detectable from the produced signal as indicated by a change in the backscattered light. To increase the sensitivity of the apparatus, a reference fiber and an interferometer may also be employed.

Abstract: A process and circut device for the deactivation and subsequent proof of a resonance label which has a resonant circuit with a certain Q factor and a certain frequency. The resonant circuit is energized with and disabled by a deactivation energy during deactivation. During deactivation, time is divided into a continuous alternating sequence of first and second time periods which directly follow one another. A transmission antenna transmits a deactivation energy during each of the first periods of time in the form of a sequence of separate deactivation impulses to cause the reosnant circuit of the resonance label to oscillate in a resonant mode. The height and the width of each of the deactivation impulses and the number of the deactivation impulses within the impulse sequence are such that the impulse sequence delivers sufficient energy to deactivate the resonance label. The transmission is stopped and the transmission antenna is disabled for each of the second periods of time.

Abstract: A portable security lock of the "U-bar" type includes a rigid "U" or "C" shaped security bar (8), and a flexible security loop (14) and a generally tubular cross member (2). The cross member has a pair of sockets each of which is adapted to cooperate with a suitably shaped end of the security bar or loop, and an internal rotatable barrel member (26) having keyhole slots (28, 30, 32) which receive the shaped ends in a first rotational position. The barrel member is then rotated to a second position in which the shaped ends are locked into the cross-member. Electrical contacts connect the barrel to an alarm via the security loop so that the alarm is triggered if the security loop is removed or broken while the alarm is set.

Abstract: A glass break detector for detecting the breaking of a window or the like includes an acoustic transducer having a wide band frequency response, coupled to a dual channel filter and signal processing circuit. A low frequency channel detects an initial positive compression wave caused by the inward flex of the window and a high frequency channel detects the acoustic spectrum which is characteristic of breaking glass. The two channels are combined in a logic circuit that is timed so that the low frequency positive flex is detected initially with the high frequency component following shortly thereafter. If both timing conditions are fulfilled, an alarm is initiated. Additional circuitry is provided to inhibit the alarm if a negative compression wave is initially detected. The detection sequence is initiated by a loud sound characteristic of breaking glass.

Abstract: A low air warning system for scuba divers in which a pressure switch and an electromagnetic transmitter are positioned at or near the high pressure air supply tank of the scuba diver and a corresponding electromagnetic receiver is positioned on the diver's mask. A plenum extending from the receiver, provides a pair of LED light indicators of two different colors which also oscillate at different frequencies, depending upon the condition of the pressure switch in response to the supply of air in the diver's air supply tank. A unique electromagnetic transmission and receiving system is disclosed which relies upon magnetic induction between a high Q transmitting antenna and a high Q receiving antenna in the form of LC tank circuits. One of the novelties of the present invention is the use of frequency modulation and the use of distinct modulating tone frequencies which produce one or the other of two signals to activate one or the other of two LEDs of different colors and at different activation frequencies.

Abstract: An electronic seal for a casing records the time of changes in the seal state. A sealing strip is fixed in the casing and is formed as a safety loop. A monitoring device is located in the casing and attached to the sealing strip. The monitoring device generates time values which are recorded when changes in the seal state occur.

Abstract: An orientation-sensitive display system, includes a portable housing including a visual display; at least one source of information, such as time and/or temperature, to be displayed; a gravity-sensitive device for sensing the relative position of the housing; and a data processor receiving information from the source of information, and controlled by the gravity-sensitive device, for controlling the visual display in accordance with the orientation of the housing as sensed by the gravity-sensitive device.

Abstract: A method and apparatus for determining the amplitude of a first magnetic field at a first fundamental frequency in a zone in which a second magnetic field is able to be present wherein first and second transmissions of a magnetic field at the fundamental frequency and different phases is carried out at different times, the field in the zone is detected for each transmission and the detected fields are processed to determine the magnitude of the first magnetic field.

Abstract: The method of producing an oscillating circuit on a label capable of being deactivated consists essentially of moving two surfaces of a capacitor together by a heated rod. Due to the heated rod dielectric material melts and the two capacitor surfaces become short circuited. Upon application of an appropriate current/voltage source, this short circuit is removed by burning or melting away to form a crater-like hole in a thinner surface of the capacitor. This produces a state of the label which allows, in a later deactivation step, a positive short circuiting. When the capacitor surfaces are moved together, the electrical connection between the two surfaces connects the crater forming source. Thereafter, a short circuit between the surfaces appears only when the label is passed through a deactivating station.

Abstract: A rockbolt monitor monitors increased loadings on a rockbolt in underground mines. The monitor includes a rockbolt plate fitted on the rockbolt to engage the surface of the rock, a stack of belleville washers on the end of the rockbolt outside the rockbolt plate and a spring seat plate outside the belleville washers. When a nut is fitted onto the rockbolt and torqued, the belleville washers will compress to provide the desired force urging the rockbolt plate against the surface of the rock. This spring arrangement allows relative movement of the rockbolt plate on the rockbolt in response to ground movement, such as caused by blasting. The load indicator itself includes a threaded sleeve screwed into a threaded bore in the spring seat plate. A spring loaded piston rides in the sleeve. It is biased into engagement with the rockbolt plate.

Abstract: Disclosed is a garage door opening device, including a garage door opener transmitter which provides a signal to a receiver that, upon receiving said signal, actuates a drive mechanism that opens the garage door. The transmitter is positioned in an automobile in a location normally hidden from view of a driver of the automobile. The transmitter includes a pair of terminals across which a manually operable switch element is connected. This switch element has means for connecting it across the terminals, with the actuator for the switch element mounted in the automobile in an exposed position in view of the driver and within easy reach of the driver. Preferably, the switch element is of the push button type.

Abstract: An apparatus for monitoring the position of a patient relative to a bed signals whether the patient is in the middle of the bed, to the left or right of center, at the left or right edge of the bed, attempting to lift himself from the bed, or completely out of the bed.

Abstract: The circuit arrangement has at least one electrically, cut conductor track on at least one surface of a support film, the support film being free of deformations and fluctuations in the thickness, both in the region of the conductor track covering it and outside this region. The edges of the conductor track have a projection in the form of a stamping burr. A negative circuit is applied to a stamping substrate or embossed in the latter by means of embossing dies or punching tools constituting a block; the conductor track representing the remaining positive circuit is transferred to the support film.

Abstract: A thin-film magnetic material is formed on a polymer substrate. The material exhibits large Barkhausen discontinuity without intentional application of external tensile or torsional stress. The thin-film material may be produced by a sputtering technique wherein the normal to the substrate is directed obliquely to a target member. A biasing magnetic field in proximity to the substrate may also be used during film formation, and the substrate may be supported by a curved holder or a cylindrical roll-to-roll apparatus. The thin-film thus produced may be used as a marker in an article surveillance system or as a magnetic sensor.

Abstract: In a safety device for an IC handler in which a carrier arm and a carrier head, which carry IC elements to testing stations and carry tested IC elements from said testing stations to another position, are covered with covers for safety in such a manner that they can freely be opened and closed, a cover lock mechanism for locking the covers in their closed state and a cover unlock switch are provided. When it is detected, in the ON state of the cover unlock switch, that the IC handler is not in operation, the cover lock mechanism is unlocked by the detected output and the drive current to a motor for driving the carrier arm and the carrier head is cut off, and then it is displayed that the covers may be opened.

Abstract: An alarming and entertaining glove includes a plurality of illuminators and buzzers mounted on a glove body electrically connected to an audio and optical driving circuit secured on the glove body, and at least one trigger switch formed on an inside surface portion of the glove preferably formed on an inside surface portion of any finger sheath and electrically connected to the audio and optical driving circuit, whereby upon a grasping of a wearer's hand or closing of the wearer's fingers with the hand, the trigger switch will be actuated to spread a warning sounding and to illuminate the illuminator for both audio and optical alarming purpose or for music sounding for entertaining purpose.

Abstract: The monitor allows for the non-destructive determination of the status of a liner disposed within a conduit. The conduit may, for example, be an elbow, valve, pipe. At least one wire is disposed within the liner in an area of concern. The wire is connected to a receptacle located on the conduit. A status display plugs into the receptacle and checks the continuity of the wire. If a wire is broken, this information is displayed, indicating a potential problem with the liner.

Abstract: In a glass smashing alarm system for generating an alarm when a glass smashing sound is detected, the present invention is directed to reduce the possibility of occurrence of an erroneous alarm, and includes a normal alarm mode in which a preliminary alarm is raised for a short time when a glass smashing sound is detected, and a special alarm mode in which a main alarm is raised for a long time when the glass smashing sound is detected, and is constituted in such a manner that mode switching is effected so as to shift the mode to the special alarm mode at the end of the preliminary alarm, and to return it to the normal alarm mode after the passage of a predetermined time if the glass smashing sound is not detected at the end of the main alarm or during the special alarming mode. In another aspect of the invention, generation of an alarm is inhibited if a key unlock switch is turned ON before passage of a predetermined time from detection of the glass smashing sound.

Abstract: An animal confinement arrangement has a home base that transmits different signals to two different wires. An animal collar detects a first signal from one wire and, depending upon the strength of the signal detected, activates deterrent and alarm devices, or disconnects the deterrent devices. The collar also reactivates the deterrent devices upon receipt of a second signal from the other wire.