Abstract: The present invention is a roll-up alarm screen assembly for use in a frame. The frame has a first magnet disposed in its bottom portion and a second magnet disposed in its top portion. The roll-up alarm screen assembly includes an alarm screen and a roll-up mechanism which rolls the alarm screen up and down. The alarm screen includes a screen mesh and a conductive wire which is mechanically coupled to the screen mesh. The roll-up alarm screen assembly also includes a first magnetic coupler and a second magnetic coupler. The first magnetic coupler electrically couples severed ends of conductive wire when the first magnetic coupler is disposed adjacent to the first magnet. The second magnetic coupler electrically couples severed ends of conductive wire when the second magnetic coupler is mechanically coupled to the roll-up mechanism and is positioned so that the second magnetic coupler is disposed adjacent to the second magnet in order to detect any movement of either the roll-up mechanism or the screen mesh.

Abstract: An alarm assembly specifically designed to warn sleeping occupants within a dwelling structure as to the occurrence of earth tremors such as those caused by relatively serious earthquakes wherein an activating member is movably positioned relative to a supporting base and is sensitive to such earth tremors to the extent of being displaced within a predetermined range of movement and into activating engagement with a switching assembly also mounted on said base to cause operation and/or activation of preferably an audio alarm to awaken the sleeping occupants.

Abstract: A fire or smoke detection and alarm system (10) that is enclosed in an elongated enclosure (36) and installed alongside an exit door (52). The enclosure (36) includes a first circuit (12) having integral smoke and fire detectors (14a), (16a) and a redundant second circuit (20) having an integral sound activated switching circuit (22) that is energized by a pre-existing remote audio alarm (24a). The two circuits (12), (20) may be selected either manually by a toggle switch (28) or automatically by an automatic switching circuit (30). When either of the two circuits are energized by smoke or fire, a stroboscopic flashing lamp (34a) and an audio alarm (34b) that are located near the bottom of the enclosure (36), are turned-on. When a fire occurs and smoke fills a room or corridor, panic and disorientation are common. By having the lamp (34a) and audio alarm (34b) near the floor, a person can crouch and be guided by the beam of the light and sound toward the exit door and out to ultimate safety.

Abstract: Apparatus for sensing smoke in a duct includes a housing with inlet and outlet ports and a flow chamber which directs gas flow on a path between the ports and to and from a smoke detector. A vaned rotor on the path is visible through a window in the housing gives a visual indication of the existence or nonexistence and direction of gas flow and thus whether or not normally flowing duct gas is being sensed.

Abstract: An alarm device, suitable for use with venetian blinds and other retractable blinds and curtains, comprises, secured together as a single unit, a piezoelectric motion sensor, an amplifier circuit electrically connected to the piezoelectric sensor to amplify signals generated in the sensor, an audible alarm electrically connected to the amplifier circuit for activation by the amplified signals, and a source of electrical power for the circuit and the audible alarm. In one embodiment described, the unit is built upon a printed circuit board and is of such shape and dimensions as to fit in the bottom rail of a venetian blind.

Abstract: A motion sensor comprises a beam having a level switch mounted thereon in a horizontal position. When the sensor is moved, the beam tilts causing the level switch to activate an alarm or remote device. Also in response to tilting, a motor is energized to move the beam back to its original horizontal position. In a first embodiment, two level switches control one motor. In a second embodiment, one level switch controls two motors. In other embodiments, pendulum type switches are employed.

Abstract: An electronic security system for monitoring merchandise and the like is provided which is responsive to any change of state in the electrical connections thereto thus providing for the detection of virtually any tampering with the merchandise or security system. Conductive loop sensors attached to the merchandise are releasably coupled to series-connected modular sensor monitoring units which in turn are connected to a single control box enclosing latching and alarm circuits. Each monitoring unit is preferably adapted to receive a plurality of conductive loops. Severing of any of the loops, as well as disconnection or reconnection of the loops, the monitoring units or the control box activates the alarm. A time-out circuit controls the length of time of alarm activation and is switchable between long and short alarm durations.Means facilitating the mounting of the manifold units and control box on existing T-stand and wall rack clothing displays, are also disclosed.

Abstract: To provide recognition of personal data, for example the registration number of a vehicle in which a car radio is installed, the car radio includes a non-volatile memory (4) which can be selectively connected to a data input arrangement (2) for the electronic equipment (1) to store the registration number therein. A recall switch (S2) is provided to selectively connect the non-volatile memory (4) to the display (3) for displaying the personal recognition data or, in normal operation, to connect the display to the output of the electronic equipment, to display data pertinent to the operation of the electronic equipment, for example the frequency of a tuned station. Two additional memories (5, 6) store, respectively, a predetermined code word and, upon entry from the data entry arrangement, the same code word. Unless the two code words agree,the recall switch (2) is changed to display only the personal recognition data, for example the vehicle registration.

Abstract: A monitoring system to confirm the presence or absence of a monitored individual through that individual's prescribed activity at a particular site at one or more pre-set times during a day. The system comprises an on-site station in communication through an automatic communicator with a remote central station. The on-site station has a signal generating device pre-settable to at least one particular time of day at which time the signal generating device emits an on-site signal for a period of time beginning at the pre-set time. The signal generating device can be manually deactivated during this period of time, but if it is not, the signal generating device activates the automatic communicator which causes notification thereof to the central station which identifies the notification and retrieves and displays pre-collected data on the monitored individual including instructions to be followed.

Abstract: A radio remote control system for a model drive unit such as a model plane or the like is disclosed which is capable of eliminating retrimming of the same controlled object of which the trim adjustment was completed to substantially simplify the troublesome trim adjustment. The system includes a trim control voltage code memory which serves to separately readably stores therein trim control voltage codes representing trim control voltages of trim controllers concerned with a previously controlled object, so that the trim control voltage codes corresponding to the positions of the trim controllers during the previous control operation may be read out from the memory during recontrol of the previously controlled object. The system may also include a digital adder for carrying out addition of the trim control voltage codes of the previously controlled object read out from the memory and the trim control voltage codes concerned with the same controlled object currently controlled.

Abstract: A detector for use in a mail sorter is positioned along a path over which articles (letters, postcards, etc.) travel while in an upright position. A problem with such paths is that sometimes articles are overlapped, and sometimes small articles are hidden behind large articles. The invention detects such overlaps by (1) detecting height changes of any single article which trips a detector only once, and (2) forcibly displacing one article relative to the other of two overlapped articles. The change of length resulting from the forced displacement is detected.

Abstract: In a combination heat-sensing fire detector provided with a differential diaphragm electric contact and a contact which operates at a predetermined temperature, a shape memory effect element is used as a device which operates at a predetermined temperature. The fire detector can generate a fire alarm without fail even when the ambient temperature rises very slowly.

Abstract: A fire detector having a body comprising a cover part and a hood part and containing therein fire detecting means and electrical circuits, and a base detachably fastening the body by engaging means provided on them, respectively, is disclosed wherein in order to prevent the cover part from coming off the hood part due to shock, vibration, etc. possibly subjected thereto at the time of maintenance, inspection, etc.

Abstract: A wallet includes a pair of leaves foldable upon each other having two longitudinal metallic strips adhered on a magnet strip formed on a right leaf of the two leaves, a plurality of card bags adapted for inserting credit cards, lift cards, etc. therein each bag having a lower opening, a metallic foil chip backed with a ferrous chip corresponding to the lower opening to be operatively contacted with two matallic strips formed on the right leaf adapted to complete an alarm circuit, and an alarm circuit having a light-emitting diode (LED), a sensitive photoresistor and a inert photoresistor subject to light exposure from the LED when closing the two leaves, whereby if any card is not inserted in the bag, the foil chip will be magnetically driven to contact the two metallic strips to close the alarm circuit and light LED to thereby increase a positive voltage through the inert photoresistor to start the sounding IC to remind the wallet owner for his or her possible missing of a card.

Abstract: An apparatus for detecting cracks in a flexible rotating coupling is disclosed in which the flexible coupling includes a flexible element having a plurality of flexible discs. An electrically conductive, normally continuous, line is affixed to at least one of the flexible discs and connected to a circuit. The conductive line becomes discontinuous if the disc cracks. The circuit is mounted on the coupling and transmits a signal indicative of the continuous or discontinuous condition of the conductive line and thereby the intact or cracked condition of the flexible disc. The transmitted signal is received by a stationary circuit which provides an output indication of the disc's intact or cracked condition.

Abstract: An alarm for a milk cooler which sounds when the temperature of milk within the cooler exceeds a predetermined value. A switch permits the device to be turned off to prevent it from sounding when milk is being discharged from the cooler or when the cooler is being cleaned with hot cleaning solvent. However when fresh milk is being introduced into the cooler that switch is overridden and the alarm sounds should the milk not be cooled to the required temperature after a predetermined interval of time.