Abstract: Disclosed is a lamp switch for a parking brake and a structure of a lamp switch is configured to be changed, which indicates that a parking brake is pulled as lighting a lamp on a instrument panel of a vehicle by pulling a lever for the parking brake to prevent malfunction due to poor contact of the lamp switch when an external shock occurs, enhance fuel efficiency and reduce manufacturing cost due to weight reduction, and reduce the number of assembled fixtures.

Abstract: A magnetic reed switch, including: an insulating casing, magnetic reeds, and at least one flexible element. The insulating casing is a hollow structure. The magnetic reeds are disposed inside and at two ends of the insulating casing, respectively. Ends of the magnetic reeds overlap. The at least one flexible element is an electrically conductive material and is disposed on at least one magnetic reed. The at least one flexible element is connected in parallel to two ends of the magnetic reeds.

Abstract: A magnetic system for biosensors is switchable between attraction force and repulsion force near the sensor surface. The magnetic system includes a magnetic source and a sensor. The sensor corresponds with the magnetic field in a way that the magnetic source creates inhomogeneous magnetic field lines that results in a magnetic force towards the magnetic system and which subsequently or adjacently exerts a magnetic force directed away from the magnetic system with all magnetic forces generated at the same magnetic source.

Abstract: The improved reed relay package provided a “pseudo” Form C relay that includes two Form A relays with at least one bridge filter element electrically interconnecting the signal outputs thereof to reduce stub capacitance and improve RF performance. As a result, the reed relay package can operate at very high frequencies, such as 18 GHz and higher. Also, vias can be provided through the support substrate to simulate a co-planar waveguide and RF shields profiled with cut-outs to better simulate a 50 ohm impedance environment throughout the path of the signal line.

Abstract: A method for sealing a housing includes providing a base plate of the housing with at least one opening; providing an electrical connection that extends through the base plate from an inner side to an outer side of the base plate; and applying a sealing compound into the opening from an outer side of the base plate in order to seal an interface between the base plate and the electrical connection.

Abstract: Encapsulated switches are disclosed which substitute non-toxic gallium alloy for mercury. In one embodiment, wetting of the interior surfaces of the housing is prevented by coating the surfaces with an electrically insulative inorganic non-metallic material, such as alumina or boron nitrate. According to another embodiment, a perfluorocarbon liquid is employed as the anti-wetting agent.

Abstract: A stop lamp switch including: an enclosure; a reed switch disposed in the enclosure; a magnet, disposed in the enclosure, a magnetic field of which opens and closes the contacts of the reed switch; an actuating shaft that is movable along an axial direction of the enclosure; a blocking member provided on the actuating shaft, that moves with the movement of the actuating shaft, between a first position, at which the magnetic field from the magnet directed toward the first reed switch is blocked, and a second position, at which the blocking of the magnetic field from the magnet directed toward the first reed switch is no longer blocked.

Abstract: Electrical switching device, especially a high-frequency switching device, with at least one oblong electrical switching element, which is arranged with one contact end between two fixed-contact elements spaced a transverse distance from one another and can be moved by two adjustment elements forming a transverse movement drive transversely to a longitudinal direction optionally towards the one or the other fixed-contact element. The adjustment elements are disposed laterally alongside the switching element and can be moved transversely to and from the switching element. In order to improve the transverse movement drive for the switching element, the switching element-comprises magnetic material, wherein the adjustment elements are formed by magnets.

Abstract: A hermetically sealed relay is provided having two circuits therein.

Abstract: A set is disclosed with a position sensor and an exciter part. The position sensor has three reed contacts which are pointed parallel to one another in a triangle arrangement next to one another, of which the first two are used for doubled detection of the exciter magnetic field. The third reed contact is used to generate an error signal when the sensor is activated by means of an outside magnetic field. The exciter part has three permanent magnets which are arranged in a triangle arrangement which corresponds to the triangle arrangement of the reed contacts, with pole axes aligned parallel to one another. Of them, the first two magnets are pointed in the same direction and are located at a first distance to one another. The third magnet is polarized in the direction opposite the first two. This results in that only the two make contacts can be activated by the two bar magnets which are pointed in the same direction. Conversely, all three reed contacts are activated each by an outside magnetic field.

Abstract: A stop lamp switch including: an enclosure; a reed switch disposed in the enclosure; a magnet, disposed in the enclosure, a magnetic field of which opens and closes the contacts of the reed switch; an actuating shaft that is movable along an axial direction of the enclosure; a blocking member provided on the actuating shaft, that moves with the movement of the actuating shaft, between a first position, at which the magnetic field from the magnet directed toward the first reed switch is blocked, and a second position, at which the blocking of the magnetic field from the magnet directed toward the first reed switch is no longer blocked.

Abstract: An array of reed switches (13) is assembled on a circuit board (11) having a plurality of through-apertures (12) with one reed switch (13) disposed in each aperture with the axis of the switch envelope (14) extending perpendicularly to the plane of the board. A plurality of coils (16) is provided on the board so that each switch (13) is surrounded by a respective coil, the coils being connected to conductors on the board for operation of the switches. Also disposed is a control circuit wherein the reed switch drive coils (26) are connected in series across a constant-current voltage source and a respective solid-state switch TR1, TR2 . . . connected across each coil, with divers for each solid-state switch to permit operation of a selected reed switch.

Abstract: A hermetically sealed relay is provided having two circuits therein.

Abstract: An apparatus for sensing relative positions of mechanically coupled devices. The apparatus includes a magnetically actuated switch connected to a set of flux conductors to form a switch assembly. A permanent magnet is affixed to a set of flux conductors to form a magnet assembly. The flux conductors are positioned adjacently to conduct flux from the permanent magnet to the magnetically actuated switch. Movement of either assembly results in the reduction of flux conduction between the magnet and the magnetically actuated switch. The apparatus can be integrated into a helmet mount for night vision goggles to sense the relative position of the helmet mount for controlling the operation of the night vision goggle.

Abstract: A method and system for monitoring the integrity of a container specifically adapted for the system and constructed with at least one door. A sensor is secured in the container for detecting proximity of the at least one door relative to another area of the container and for providing sensor data that may be communicated from the container relative to its integrity.

Abstract: A trackball device of the present invention includes an operating ball, multiple rollers which rotate by contacting the ball while it is rotated, multipole permanent magnets which co-rotate with these rollers, and a reed switch disposed in a position where it turns on and off as a result of changes in magnetic flux caused by the rotation of the permanent magnets so as to provide tactile feedback when the ball is rotated. The trackball device is configured to make an attractive force generated between the reed switch and permanent magnet affect the rotation of the rollers.

Abstract: A MEM's reed switch array is provided having a first switch having a sensitivity causing the first switch to open or close due to a magnetic flux, and a second switch of lesser sensitivity than the first switch causing the second switch to open or close due to a magnetic flux. The first switch can be parallel to the second switch, or the first switch can be proximate to the second switch so that a center line of the first switch is coaxial to a center line of the second switch. Further, a security device for residential and/or commercial use is provided, having a magnet housing having a magnet, a switch housing having a MEM's reed switch array with a first switch and a second switch, and a gap between the magnet housing and the switch housing.

Abstract: A secure magnetic sensor has a first magnetic switch activatable by a first magnetic field and a second magnetic switch activatable by a second magnetic field which is stronger than the first magnetic field. The first magnetic switch is electrically connected in series to the second magnetic switch. In the default position, the first magnetic switch is in the open position whereas the second magnetic switch is in the closed position. When the secure magnetic sensor is normally activated, the first magnetic switch is activated to close. However, when the secure magnetic sensor is tampered by the addition of a supplemental magnet, this causes the second magnetic switch to be in an open position thereby sounding an alarm.

Abstract: A reed switch apparatus utilizes one or more reed switches to communicate with one or more devices. In one configuration, the reed switch apparatus utilizes a single magnetic field to simultaneously activate two or more reed switches. In another configuration, two or more reed switches, each acting independent of one another are simultaneously activated by a single magnetic field. Additionally, a method of controlling at least two devices includes exposing a reed switch apparatus to a single magnetic field. Yet another method includes a activating a device via the use of a single reed switch mounted to a portion of a warehouse structure.

Abstract: The present invention is an RF electromechanical single pole single throw (SPST) switch providing a low loss path for RF signals in closed position and a high impedance path for RF signals in open position. The structure has two reed switches each having an actuator and two contacts with both reed switches electrically connected in parallel and mechanically attached such that one contact in each reed switch is grounded and the another contact connects to the actuators that are also connected together and to an RF input pin.

Abstract: The present invention provides a circuit protection device that comprises at least one set of reed members having a pair of reed members, wherein each of the reed members is constituted by a magnetic material and disposed in such a way as to be opposed to the other of the reed members and has an end disposed in such a manner as to be apart by a predetermined gap from and contactable with an end of the other of said reed members, magnetic-field generating unit placed in vicinity of the reed members set and adapted to generate a holding magnetic field for maintaining a state, in which the end of the reed members are in contact with each other, after the ends of the reed members are attracted to each other and the contacts are closed and a contact gap reduction unit for reducing the gap to a gap corresponding to a pull-in of the magnetic field generated by said magnetic-field generating unit.

Abstract: The relay is formed from two half-shells which are formed by extrusion coating the functional elements with plastic. A first half-shell is formed by extrusion coating a coil with a U-shaped core, while a second half-shell is formed by extrusion coating a spring support and at least one fixed contact element. A contact spring having a flat armature is attached to the spring support. The relay is adjusted and at the same time sealed by the process of joining the two half-shells.

Abstract: A method of manufacturing a relay wherein the relay has a coil body that is formed by plastic injection molding. The method further includes the step of embedding into the coil body injection mold a contact spring terminal pin and a number of fixed contact carriers and coil terminal pins. The method also includes the step of embedding a core into the coil body injection mold.

Abstract: A plurality of magnetic reed switches are arranged in a plurality of rows and columns. Mounted above the plane of the reed switches but in close proximity thereto is an electromagnet. Stepping motors are capable of moving the electromagnet so as to overly any one of the reed switches. When the electromagnet is in position over a selected switch, it can be energized to selectively turn the switch on or off. A sensing circuit including a Hall effect transistor travels with the electromagnet and senses if the reed switch below the sensor is on or off.

Abstract: Two molded case electrical switches such as circuit breakers, network protectors, disconnect switches and transfer switches, are secured together side-by-side by joining blocks having tongues extending along their sidewalls which engage undercutting grooves undercutting the irregular surfaces of the confronting sidewalls of the switch molded casings with an interference fit. Separate joining blocks for the front and rear sections of the molded casing are driven into place and retained by bolts engaging flanges on the molded casing. The poles are paralleled by external conductors in any desired configuration so that the standard switches can be used without customization.

Abstract: A reed switch package is disclosed that includes a reed switch with at least one electrical signal path. A cylindrical ground shield is provided about the reed switch. Ground terminals are connected to opposing sides of the ground shield so that the ground terminals are on opposing sides of the signal terminal and lie in the same plane. The reed switch resides on a support substrate. An electrically conductive signal via extends through said main body and connects to the signal terminal. Ground vias extend through the main body and respectively connect to the ground terminals. The grounds vias are on opposing sides of the signal via and lie in the same plane as the signal via. The signal and ground via exit at the bottom of the main body and are connected to a circuit via solder balls to provide a compact surface mount package with a controlled impedance environment.

Abstract: An electro-mechanical reed relay in-circuit test fixture switch is inserted onto a wrapped wire pin extending from the bottom of a socket holding a spring-loaded nail inside a bed-of-nails or equivalent testing fixture. The switch is located at the circuit board being tested and is connected between the pin under test and a remote testing unit. Only the switches required to contact specific nodes for a specific test are actuated, i.e. moving the subject pin's reed relay switch to a closed position, during the actual test sequence. All remaining test wires are turned off, i.e. opened, releasing the electrical connection of long test wires from each of the nodes. Alternatively, all switches can be NC and individual switches, or groups of switches, can be opened to disconnect the electrical connections of the long test wires. Additional testing is performed in a similar method by repeating the steps above for various test sequences and nodes.

Abstract: A reed relay comprising a reed switch having a pair of leads and a magnetic coil assembly for driving the reed switch, the magnetic coil assembly being composed of a magnetic coil wound around a cylindrical bobbin having an insulating flange at each end of the cylindrical bobbin, a terminal insulator integrally continuous with each flange, and a plurality of terminal leads insulated from one another by each of the terminal insulators. One embodiment of the present invention is a cylindrical bobbin having an electric conductivity so as to act as an electrostatic shield for the reed switch inserted thereinto, and another embodiment of the present invention is a method for fabricating the magnetic coil assembly comprising a step of forming a cylindrical bobbin and the terminal leads in each side of the cylindrical bobbin by using a patterned sheet of metal, wherein the cylindrical bobbin is continuous with the ground terminal lead in each side.

Abstract: A multiple reed switch module includes multiple reed switches aligned in fixed, spacial relation by thermoplastic side rails attached to the switch leads, with lead ends extending perpendicularly from the leads in parallel relation. The side rails function as a spacing mechanism and facilitate handling of the switches, and the efficient insertion of the multiple parallel lead ends in circuit board assemblies.

Abstract: A circuit control device combining the functions of a current sensor, a time delay circuit, an undervoltage sensor, and a lockout such that, once tripped, the device must be reset intentionally. The current sensor includes a coil (16a) surrounding two reed switches (18, 20), the reed elements (18a, 20a) of each of which being perpendicular to those of the other for vibration resistance. The coil is then surrounded by a magnetic shield (28) in order to shield out some of the leakage flux from the main relay coil (14c). The time delay circuit includes a PUT (Q1) which compares a steady voltage from a voltage divider network with the increasing voltage across a capacitor (C3). The undervoltage sensor includes a second PUT (Q3) which compares the voltage of the DC source (10) with the steady voltage across a zener diode (D5).

Abstract: A changeover switch comprising first and second substrates assembled in spaced relation to each other, a plurality of reed switches disposed in a circle having predetermined angular intervals on the substrates, a permanent magnet pivotally mounted on a revolving disc so as to lie in the same plane as the first and second substrates for causing the reed switches to switch on and off alternately as it is revolved between the first and second substrates, and a means for intermittently rotating the permanent magnet at an angle of every 90.degree. around its pivotal axis.

Abstract: A magnetically controlled switching device having a magnetic shunt plate with many terminals arrayed along the peripheral portions thereof, a plurality of coil forms located at the crosspoints of a matrix consisting of X and Y coordinates on a plane surrounded by the terminals on the magnetic shunt plate, an X coil control line wound on each of the coil forms in the row in the X direction in an alternately reversed manner, both ends of the X coil line being connected to corresponding terminals located along the X direction, a Y coil control line wound on each of the coil forms in the column in the Y direction in an alternately reversed manner, both ends of the Y coil control line being connected to corresponding terminals located along the Y direction, reed switches accommodated in each of the coil forms, contact points of the reed switches corresponding to the magnetic shunt plate, and the reed switches being connected to a plurality of matrix crosspoints consisting of multiple connection wires in the direct

Abstract: The invention contemplates a unitary magnetically sensitive circuit element or network and a flexibly articulatable elongate assembly of a plurality of such elements or networks, with electrical interconnection of the same, such assembly being inherently suited to precision operation as a function of length, whatever the length selected for a particular application or use. In one application to liquid-depth indication within a tank, the longate assembly is merely inserted into the tube along which a float-borne permanent magnet is guided, and the magnetically sensitive element of each successive unit is actuated as the float tracks liquid level and is displaced from actuating relation with one and then to the next-adjacent one of the circuit-element units. The connection of circuit-element units is such that electrical-resistance observation from one end of the assembly provides a direct indication of the liquid level at which the float magnet is currently operative.

Abstract: An arrangement for locking a reed capsule within a tubular bobbin of a reed switch assembly comprising, a deflectable tab located adjacent a slot formed by two upstanding arms. The tab is disposed to deflect inward when a wire return strap connected to a reed capsule is inserted into the slot. When the reed capsule is fully seated within the bobbin the tab returns outward over the wire strap, locking the strap between the tab and the closed end of the slot.

Abstract: A reed relay wherein the coil and switch terminals are disposed generally in planes parallel to the axis of the relay. A bobbin is molded onto a switch consisting of glass-enclosed contacts with leads projecting therefrom. Coil terminals are molded integrally with the flanges of the bobbin. The coil leads are connected to one side of the terminals which are then bent into notches in the flanges. The switch terminals are formed alternatively by bending them into notches in the bobbin flanges to project at right angles to the axis of the bobbin or by laying a separate terminal in the bobbin and welding the terminals to it. A housing is molded around the bobbin and the respective coil and switch terminals are bent into an in-line position.

Abstract: A scanner unit on a double-sided printed circuit board has reed switches on one face and coils on the other. The copper patterns include large screening pads beneath the reed switches and the coils. These pads distribute heat evenly along the switches to minimize thermally-induced E.M.F.'s, and provide electrostatic screening. An energizing circuit for the coils provides a single, long pulse several times larger in magnitude than the minimum required for relay actuation, followed by a series of shorter pulses of the same magnitude, but having a time-average magnitude equal to the relay holding current. This avoids the need for a voltage-dropping resistor and power wastage therein.

Abstract: Electric relay comprising flexible-blade switches having multiple operational thresholds. In this relay, the most sensitive switches are within the coil whereas the least sensitive switches are located outside the coil, the magnetic circuit being directed toward the outside switches by the use of magnetic flux detectors. Moreover, the operational thresholds of the switches are adjustable by the use of magnetic shunts disposed in the coil and in the flux detectors, one of the shunts being constituted by a material chosen for its Curie point.

Abstract: The invention relates to a micro relay intended for use in printed circuits provided with two switching-over contacts. The contacts are arranged in the core of the coil, each of the contacts being provided with its own armature fixed on the switching-over spring, thus no motion transfer elements are needed. The contact space is hermetically sealed so that contact properties similar to those of reed relays are achieved both for the make contacts and for the break contacts.

Abstract: Reed switches, contact sections of the reed of which bear with a predetermined positive force against inside surfaces of an elongated envelope, are made by forming combs, each including a header web and, integral with the web and projecting therefrom, a plurality of reed elements. The reed elements are parallel with one another and spaced from one another along the web. A plurality of elongated glass envelopes are mounted in a fixture, parallel with one another and spaced the same centerline-to-centerline distance as the reed elements. The reed elements of a first comb are inserted into one end of the envelopes and the reed elements of a second comb into the other end of the envelopes until the inner ends of the opposite reeds are in the desired positions lengthwise with respect to one another.

Abstract: A molded plastic retainer for securing a permanent biasing magnet in position inside the core of a multi-capsule reed relay assembly, wherein the retainer secures the magnet by an interference fit between the magnet and an inner core wall. The retainer includes fins which position the reed capsules against the magnet.

Abstract: A two wire switching system is intended for use in a hostile environment such as a nuclear reactor where temperatures are in excess of 250.degree. or 300.degree. C. and where the use of a switch with a permanent magnet component or a component intended to have remanence is not desirable. The system uses eight reed switches each having three similar windings. No magnetized components are used. The switches are normally closed in the absence of a magnetic field and are opened when a net magnetic field results from current flowing through at least one winding. A pair of conductors interconnects the windings so that each conductor connects certain windings in a series arrangement to ground, giving a unique interconnection for each switch. A control current may be caused to flow in either conductor arrangement at a value of zero or plus or minus A or 2A amperes where A amperes is at least sufficient to cause actuation of a switch when it flows through one winding.

Abstract: An improvement in an electromagnetic switch matrix permits the simultaneous closing of a plurality of cross-points either in the same row or in the same column without causing the erroneous operation of nonselected cross-points. The switch matrix is of the divisionally excited type having a magnetic shunt plate with sealed switches disposed in through apertures therein at cross-point locations. First, second, third and fourth windings are wound around the sealed switches so as to generate control magnetic fields for controlling the operations of the respective sealed switches. An asymmetrical magnetization is given to the sealed switches with respect to the top and bottom planes so that there is a difference in the magnetization of the sealed switches on either side of the shunt plate when driven by the windings.

Abstract: A reed relay of the type having a pair of parallel reed switches aligned so that opposite ends of one switch are adjacent opposite ends of the other switch, the adjacent ends of said switches being in thermally conductive but electrically insulated relation with each other whereby the thermal EMF of the relay is eliminated or reduced to minimal levels.

Abstract: Signal switching devices employing electromagnetic switching elements having particular application in the switching network of automatic telephone exchanges are disclosed. The switching devices are of the kind comprising an input and output signal line electromagnetic switching matrix. The switching devices include a cutoff circuit and/or off-normal circuit integrated with the switching matrix.

Abstract: An improved magnetic latching reed relay construction includes a hollow bobbin having an integrally formed flange and a base portion on each end. The bobbin is formed in one piece from a thermoplastic material. At least one reed switch is disposed within the bobbin. Mechanical support and electrical connections to the reed switch are provided by terminals disposed through each base portion so that they extend above the base portions. A plurality of terminals disposed through each base portion extend downwards therefrom to provide electrical connections to control coils wound about the bobbin.

Abstract: A coaxial cable switch comprising a plurality of sealed reed, magnetically responsive switches serially connected in alternating directions which switches act as the inner signal path of a coaxial conductor. The outer coaxial conductor consists of a copper "corrugated" sheet within the adjacent and oppositely facing channels of which the individual switches are respectively positioned. The open sides of the channels are covered with metallic tape by means of a conductive adhesive and a single winding encircles the structure for the simultaneous operation of the reed springs.

Abstract: A divisional excitation type coordinate switching device featuring a single magnetic shunt plate and preformed elongate excitation coils arranged on the top and bottom sides thereof and each surrounding a row or column of switching elements. Terminal blocks are secured to the four sides of the shunt plate, enabling arrangement of component parts in a fully developed formation. Outstanding among the advantages gained are substantial reduction in winding cost and overall size, ease of assembling and improved operational reliability.

Abstract: A magnetically controlled switching matrix is composed of magnetic members each having two coils placed thereon and connected into respective row and column energizing circuits, and comprises a generator of decaying alternating current pulses electrically coupled with the row coils, and a direct current generator electrically coupled with columns coils.

Abstract: An electromagnetic coordinate selection device comprising a plurality of electromagnetically operated cross point switches arranged in a matrix form and a plurality of magnetic cores disposed at points corresponding to said cross point switches for operation thereof, with any desired cross point switch closed only when the first and second coils wound about the magnetic cores are additively excited wherein the magnetic cores are each of the composite type to stabilize the operation of the cross point switches and the cross point switches are collectively sealed in a single container or in groups in a plurality of vessels provided in a number equal to or smaller than the number of the conductors arranged in the direction of the row or column of said matrix.