Abstract: An electronic device (10) includes: a power supply (11); a first switch (12) that is connected at least to one pole of the power supply (11) and interrupts power supplied from the power supply (11) to a load (13); a second switch (14) that is positioned on a load (13) side with reference to the first switch (12) and interrupts power supplied from the power supply (11) to the load (13); a first power line (L11) that is connected to one end portion of an electric contact of the second switch (14), the one end portion being located on a first-switch (12) side; a second power line (L12) that is connected to another end portion of the electric contact of the second switch (14); a third power line (L13) that is connected to another pole of the power supply (11); and an electric element (resistor 15) that is connected between the first and second power lines (L11, L12) in parallel to the electric contact or connected between the first and third power lines (L11, L13), such that the electric contact of the second swi

Abstract: An apparatus for controlling a device in connection with a sensed temperature in a space includes an actuator for regulating the operation of the device, a temperature sensor for providing the sensed temperature, and a thermal antenna connected to the temperature sensor. The thermal antenna may form part of the exposed face of the apparatus. A housing may include partitions, such as a plurality of circuit boards, for communicating with the actuator to provide control for the device. The partitions or circuit boards are spaced apart to form ventilation channels for ventilating heat from the housing, including byway of an encouraging convective flow.

Abstract: An overheating destructive disconnecting method for switch, which enables a first elastic force to concurrently apply force to an overheating destructive member and a movable conductive member. Moreover, the force direction causes the movable conductive member to concurrently contact a first conductive member and a second conductive member to form a conductive circuit. A second elastic force acts on the movable conductive member, and the force direction thereof causes the movable conductive member to separate away from the first conductive member or the second conductive member, The overheating destructive member is positioned in a required non-electric transmission path and at a distance from the movable conductive member. When the overheating destructive member is destructed or deformed under a fail temperature condition, the first elastic force is lessened or lost, at which time the second elastic force causes the movable conductive member to change position, thereby breaking the current-carrying circuit.

Abstract: A monitoring module for a fusible switch disconnect device includes an open fuse detecting element and wire leads for completing an electrical connection with a fuse.

Abstract: A thermal gauge for circuit breaker useful for indicating operating conditions, such as in a miniature circuit breaker, has a thermal transducer thermally connected to the current path of the circuit breaker such that heat transfer causes the transducer to give a visible display of heat, latch engagement, or current draw within the breaker directly through a window in the face of the circuit breaker.

Abstract: Fuse state indicators for use with disconnect devices having a fuse are provided. Fuse state indicators include a housing having circuitry, a detecting means for detecting an open circuit condition, conductors adapted for electrical connection to a disconnect device so as to complete a circuit connecting the detecting means with a fuse of the disconnect device, and a signal transmitting means The detecting means is configured to transmit a signal to the signal transmitting means for determining an operational state of the fuse. The signal transmitting means, in turn, is configured to transmit a signal to a remote device the state of the fuse.

Abstract: A monitoring module for a fusible switch disconnect device includes an open fuse detecting element and wire leads for completing an electrical connection with a fuse.

Abstract: A circuit protection device having a warning function includes a casing with a button, a first terminal and a second terminal connected thereto. A resilient bi-metallic plate is connected between the two terminals and bends to be separated from the second terminal when the circuit protection device is overheated. A warning light is located within the button and connected to the first terminal. When a main circuit is connected, no current flows through the warning light which is not activated. When the main circuit is overheated, the bi-metallic plate bends to cut off the main circuit and a connection member on the warning light is in contact with the second terminal to form a circuit to light up the warning light.

Abstract: Fuse state indicators for use with disconnect devices having a fuse are provided. Fuse state indicators include a housing having circuitry, a detecting means for detecting an open circuit condition, conductors adapted for electrical connection to a disconnect device so as to complete a circuit connecting the detecting means with a fuse of the disconnect device, and a signal transmitting means. The detecting means is configured to transmit a signal to the signal transmitting means for determining an operational state of the fuse. The signal transmitting means, in turn, is configured to transmit a signal to a remote device the state of the fuse.

Abstract: The present invention teaches an overvoltage protection device that includes at least one non-linear resistance element and a single cut-off device coupled with the at least one non-linear resistance element to disable the at least one non-linear resistance element when the at least one non-linear resistance element reaches a pre-determined temperature. The single cut-off device may include stranded wire, a first solder having a first melting point connecting the stranded wire to the at least one non-linear resistance element, and a second solder having a second melting point, higher than the first melting point, connecting the stranded wire to the at least one non-linear resistance element. The single cut-off device may further include a shifting part that shifts when the at least one non-linear resistance element heats the first solder to the first melting point.

Abstract: A warning device for a circuit breaker includes a casing with a button and a warning light is received in the button. The button is movable relative to the casing and made of transparent or translucent material. When the main circuit is connected, the warning light is not activated. When overheat or overload, the main circuit is cut off and a weak current circuit is formed to light up the warning light.

Abstract: An aircraft circuit breaker includes a housing having an opening, separable contacts, an operating mechanism structured to open and close the contacts, and a trip mechanism structured to cooperate with the operating mechanism to trip open the operating mechanism. The trip mechanism includes a first bimetal to trip open the operating mechanism responsive to a thermal fault, a second ambient compensation bimetal to compensate the first bimetal, and an arc fault trip circuit to trip open the operating mechanism responsive to an arc fault. An indicator includes an indicator portion and a leg disposed from the indicator portion. A spring biases the indicator portion. The second bimetal holds the leg of the indicator, thereby holding the indicator against the spring bias. The second bimetal releases the leg of the indicator responsive to the arc fault trip circuit and the arc fault, thereby releasing the indicator to the spring bias.

Abstract: A fuse status indicator module for a fusible switch disconnect device includes a housing, a switch within the housing, a switch actuator extending from the housing and operatively coupled to the switch, at least one open fuse detecting element contained within the housing, and at least one pair of wire leads extending exterior to the housing and attachable to the disconnect device to establish an electrical connection with the fuse therein to facilitate detection of an opening of the fuse.

Abstract: A current breaker includes a shell, a switching member, a movable conductor, a first conductive strip, a second conductive strip, a third conductive strip, a snap strip, a disengaging member and a locking member. In case of excessive current, the snap strip disfigures to move the disengaging member for releasing the locking member from the movable conductor, and then separates the movable conductor from the first conductive strip so as to cut off current. Moreover, even if the switching member should accidentally be compressed immovable in the ON condition, this current breaker still could work to cut off current automatically.

Abstract: A thermally activated circuit interrupter (10) has a cantilever mounted, snap acting thermostatic disc (16) mounting a movable electric contact (18) that is adapted to move between a contacts engaged position and a tripped, contacts disengaged position. A pivot member (24) is rotatably mounted above the thermostatic disc and movably mounts a latch (26d) that is biased by spring arm (26a) against the edge of the free end of thermostatic disc (16) in the contacts engaged position and is moved under the thermostatic disc when the disc moves to the contacts disengaged position. An arm (24b) of the pivot member transfers motion to a trip indicator button (32) pushing the button to an exposed position upon rotation of the pivot member when the thermostatic disc moves to the tripped configuration and the latch moves under the disc.

Abstract: A circuit breaker includes a bimetallic snap-action disk fixed to a bimetallic connection disposed in the vicinity of a fixed contact connection inside a coverable housing. The bimetallic disk has a contact end with a contact superposed with a fixed contact of the fixed contact connection in such a way that a contact is established. When the contacts are opened, a spring-loaded isolating slide moves between the contacts. The isolating slide has an illuminated push button for reliably identifying a disconnection.

Abstract: A circuit breaker includes a shell, a movable press strip, a metal strip, a C-shaped plate spring, and three conductors. A first and a second conductor are inserted through the bottom of the shell, respectively have an upper end extending up in the shell, with a first contact point on its upper end of the first conductor, with an upper end of the second conductor connected with a metal strip, which has one end facing under a first press member of the press strip and an elastic contact strip with one end provided with a second contact point facing under the first contact point. A C-shaped plate spring has two lower ends connected with the metal strip, and a curved-up portion facing a second press member. The contact strip may disfigure by high heat caused by excessive current, curling upward to force the first contact point snap off the second contact point to cut off the circuit breaker.

Abstract: A safety switch device includes a case with a switch pivotally engaged with an open top of the case and a ramp defined in an inside of the case. Two terminals are extended from the bottom of the case and a bimetallic plate having a first end fixed to one of the terminals. A distal end of the bimetallic plate is located above the other terminal. A pull rod is pivotally connected to the switch so as to lift the bimetallic plate by a hook portion thereof when switching to “OFF” status. A control member has a first end pivotally connected to the switch member and a probe extended from a second end of the control member. The probe is movably engaged with the ramp and the second end of the control member is movably located above the second end of the bimetallic plate.

Abstract: The present invention relates to a mobile phone including a main printed circuit board. A first connector and a second connector are welded respectively onto a first predetermined location and a second predetermined location of the main printed circuit board, wherein a first power supply and a second power supply are provided respectively by the first connector and the second connector. The main printed circuit board includes a first portion corresponding to a keypad module and a second portion corresponding to an LCM module. The mobile phone also provides a holder, wherein a space is included in the holder to accommodate the LCM module. A slit is formed at a predetermined location of the holder. The mobile phone further includes a secondary printed circuit board carrying a plurality of LEDs to provide a back light source. The secondary printed circuit disposed within the aforementioned slit includes a first contact point and a second contact point.

Abstract: A multiple output thermal detection and protection device providing an output signal representative of the temperature sensed by the device, and further providing a positive output signal representative of the sensed temperature reaching a predetermined set point temperature.

Abstract: A signal accessory for a molded case circuit breaker, with the circuit breaker (10) having an operating mechanism (40) with a cradle pin (41b), a cross bar (55) and a trip bar (54) and a main breaker cover (20). The signal accessory (300) comprises a signal accessory mounting (301) having a bottom mount (308) and a top mount (306) coupled to the bottom mount (308) with the top mount configured to receive a switch (302, 304) and engage the breaker cover (20) in an accessory socket (22). A switch member (311) is rotably mounted on the bottom mount (308) with the switch member (311) having an actuator lever (322) in contact with the operating mechanism (40) of the circuit breaker (10) and an actuator pad (314) in contact with a switch mounted on the top mount (306).

Abstract: A push-pull circuit breaker is provided primarily for use in aircraft; wherein, the activation of the circuit breaker is made significantly more noticeable by the addition of a “flower” device. Specifically, as the center post of the circuit breaker deploys, “petals” at the periphery of the post expand outward. The petal expansion greatly enhances the visibility and thereby recognition of said circuit breaker deployment by flight crew or maintenance personnel. This design capitalizes on the safety and reliability of existent circuit breaker designs. Finally, the flower design incorporates only one part interlocked with the circuit breaker post to achieve the stated purpose.

Abstract: A circuit breaker includes a shell with a hollow button at the top. The button has an indicator light received therein and a central tab extending downward. A first blade, a second blade and a grounding prong extend out of the shell through the bottom of the shell. A curved metal piece is housed in the shell and electrically and pivotally connected to an inner end of the second blade. A helical spring is mounted around the tab and compressed between the hollow button and the curved metal piece, and additionally a resistor is held in the shell and electrically connected to the grounding prong. The indicator light has a first terminal electrically connected with the helical spring and a second terminal selectively engaged with the resistor.

Abstract: An indicator light which when installed in combination with either a circuit protector or a fuse, etc., will automatically illuminate to notify a user that an electrical overload has occurred.

Abstract: A temperature sensitive indicator 24 in the form of a label or decal is affixed to the outside of a thermal switch 20. The temperature sensitive label provides a permanent record of the temperature limits exposed to the thermal switch. The temperature sensitive material changes colors when the thermal switch is exposed to its predetermined temperature limit. The changed color provides a quick and clear indication of an event that caused switch activation. The color indication on the outside surface of the switch also provides a visual indication that is easy to acquire and inspect without the need to have physical access to the switch itself.

Abstract: An indicator light which when installed in combination with either a circuit protector or a fuse, etc., will automatically illuminate to notify a user that an electrical overload has occurred.

Abstract: Contacts 3, 6, which are opened/closed by the displacement of a heat responsive element 7, are interposed between first and second terminals 2, 9, and a heat generating resistor 8 is interposed between the first terminal 9 and a third terminal 10, whereby the heat responsive element 7 is displaced by heat generated when a current is caused to flow in the heat generating resistor 8 via the third terminal 10.

Abstract: A switch device has a conventional fuseless breaker device, a first conductive blade, a second conductive blade, a fixed plate, and a movable plate. The breaker device has a metal bar having two expansion coefficients, an insulator plate, a safety button, and a coiled spring. The metal bar contacts the first conductive blade. A pressing button which is disposed on the switch device has a first portion and a second portion. A lamp assembly is disposed in the pressing button. The lamp assembly has a break display lamp and a dark display lamp. The break display lamp is disposed in the first portion of the pressing button. The dark display lamp is disposed in the second portion of the pressing button.

Abstract: A temperature sensitive indicator 24 in the form of a label or decal is affixed to the outside of a thermal switch 20. The temperature sensitive label provides a permanent record of the temperature limits exposed to the thermal switch. The temperature sensitive material changes colors when the thermal switch is exposed to its predetermined temperature limit. The changed color provides a quick and clear indication of an event that caused switch activation. The color indication on the outside surface of the switch also provides a visual indication that is easy to acquire and inspect without the need to have physical access to the switch itself.

Abstract: A safety switch built-in with protecting circuit is provided. The safety switch includes a housing having a button shade pivotally mounted thereof. Three pairs of conductive plates is provided and one of the conductive plates is provided with a first platinum conductive boss. The other conductive plate is provided with a alloy plate having a second platinum conductive boss corresponding to the first conductive boss. A push and pull rod having one end being movably passed through an opening and the other end is pivotally connected with the button shade. Characterized in that wherein the alloy plate is made from assembling instead of pressing process. The curvature is formed such that the alloy plate is provided with bi-directional breaking functions. Furthermore, the internal stress structure will not be damaged during the assembling process. Besides, the yield and accuracy of mitering an overload current can be readily attained via the formula of V=IR and W=VA.

Abstract: An improved safety switch with overload protection circuit includes a housing having a lamp cover and three connecting plates disposed in a receptacle. One connecting plate is provided with a bi-metal plate having a platinum contact, and one is provided with a platinum contact corresponding to the bi-metal plate. When power is overload, the bi-metal plate will trip off so that an electrically insulating baffling plate may slip in between the platinum contacts to cut off power supply. The lamp cover is provided with a control hook which may control the bi-metal plate. The lamp cover further has a leg extending into an elongated notch of the baffling plate. By pressing the lamp cover, displacement of the bi-metal plate and the baffling plate may be controlled to achieve electrical connection or disconnection.

Abstract: A fuseless plug with an overload safety circuit breaker having a thermal reactive spring leaf and an electric conductive sheet. When in normal use, the thermal reactive spring leaf and the electric conductive sheet are electrically connected by contacting mutually. If overloading or short circuiting occurs, the temperature will rise, while the thermal reactive spring leaf made of an alloy of two kinds of metal material has different coefficients of temperature, so that the spring leaf will be bent outwardly to release the electric conductive sheet to form a broken circuit state and to assure that no disaster such as a fire alarm will occur. After clearing, a push button can be pushed down to force the electric conductive sheet into engagement again with the spring leaf for use.

Abstract: A switch having a circuit breaker comprising a housing into which an electric current is permitted to enter via a first wire connecting piece before arriving at a neon lamp via a movable piece, a fixation piece, a press tip and a spring. The press tip and a conductive piece are caused by the press key to swing so as to make contact with the fire wire connecting piece and a second wire connecting piece for turning on the neon lamp. When the electric current becomes excessive, a position limiting connection point is caused by a curve piece of a dual metal piece to withdraw from a slot of an insulated board. The insulated board is provided with a neck capable of being restrained by a projection of a housing cover of the housing so as to cause the insulated board to move up to bring about an automatic interruption of the flow of the electric current.

Abstract: A fuseless breaking switch comprises essentially a casing, an alloy blade, first, second, and the third conductive plate, a spring blade and an adjusting screw. The switching on (off) of the button allows a closed (open) circuit through the alloy blade and the conductive plates and an adjusting screw secured inside the casing will help ensure the sensitivity of dealing with different voltage loading through the adjusting to the curvature of the alloy blade by the adjusting screw.

Abstract: A circuit breaker comprises a lock (12) having a high position when the circuit breaker is triggered and a low position when the circuit breaker is set. The lock in the low position is held by a locking lever (10) against which the lock abuts. The lever cooperates with a device for detecting a current surge which, during a surge, disengages the lever so that the lock no longer abuts against the lever and is released in order to go back to its high position. The locking lever is movable between a high position and a low position, urged to its low position when the lock is set to low position, and associated with upward biasing means active (50) when the lock no longer abuts against the lever.

Abstract: In a single housing that looks like a standard rocker switch a thermally responsive movable contact element is mechanically opened by the rocker in a "switch" mode, or opened in response to an overcurrent condition in a circuit protection mode. Both conditions result in a trip flag being moved between the movable and a fixed contact. The trip flag rests lightly on the movable contact when the device is ON and during reset motion the trip flag is so mounted in the switch case that it reaches such a reset position only after the movable contact has returned to its ON or closed condition. The rocker has skirts that define cam teeth cooperable with cam teeth on the trip flag. The housing defines slots for receiving projecting portions of the trip flag to define a movable pivot for the trip flag to so reduce the forces and/or moments of the trip flag as it "rests" on the movable contact.

Abstract: An electric rocker switch has a thermally responsive movable contact element that is mechanically closed against the fixed contact, but moves by bimetallic thermal action to open when an overcurrent condition exists. A trip flag also moves between the open contacts whenever the switch rocker is moved to OFF, and will remain in this position even if the rocker is held ON, if the bimetallic element has caused the flag to move between the contacts. Trip-free operation is thereby achieved. A spring acts on the trip flag to provide a positive snap action as the flag moves between the contacts. The same spring holds the rocker ON, and serves to hold the flag lightly against the movable contact in the switch ON condition.

Abstract: An apparatus for electrically operating a circuit breaker comprising a trip display mechanism for displaying trip condition of the circuit breaker while the circuit breaker is in trip state thereof. The trip display mechanism comprises an elongate trip detecting plate which is supported pivotally at intermediate point thereof on a slider and engages at its one tip end with the handle of the circuit breaker which causes the trip detecting plate to pivot during the trip condition; and an elongate trip display plate having an indicia indicative of the trip condition of the circuit breaker at one end thereof, the display plate being swingably supported at intermediate point thereof on a frame and engaging with the other end of the trip detecting plate, the trip display plate being caused by the trip detecting plate to swing to a position where the indicia appears on a display window during the trip condition of the circuit breaker.

Abstract: A circuit breaker is shown having movable contacts carried by an operating member which moves between a circuit breaker contacts closed position and a circuit breaker contacts open position. An auxiliary switch has electrically conductive, flexible contact members adapted to engage an electrically conductive bridging shaft element carried by the operating member when the operating member is in one of its two positions to provide means for indicating the status of the circuit breaker.

Abstract: A blown circuit breaker indicator utilizing an illuminating device such as a light-emitting diode for indicating whether either a thermal electrical or magnetic circuit breaker has been tripped. The indicating device is provided in a circuit parallel to the main switch of the circuit breaker and includes a reactive element such as a capacitor. The value of the capacitor is less than or equal to 11,000 picofarads.

Abstract: An indicator circuit used primarily, but not exclusively, within a conventional circuit breaker. The indicator circuit consists of a light-emitting diode and a capacitor connected in series and provided on the neutral line of the circuit breaker. The circuit is connected in series with the main breaker switch and the light-emitting diode is energized when the circuit breaker is in the ON position. Alternatively, this indicator circuit can be used to determine the operational status of various load devices.

Abstract: A multi-pole circuit interrupter comprising first and second pole units separated by a partition wall in a housing, each of the pole units having a pair of separable contacts. The contacts of the first and the second pole units are connected by a cross bar for simultaneous movement. An operating mechanism is disposed in the first pole unit for separating the contacts in response to an overcurrent flowing through the interrupter. An alarm switch is disposed in the second pole unit for indicating the tripping of the operating mechanism, and an actuator is disposed between the operating mechanism and the alarm switch for detecting the tripping of the operating mechanism and actuating the alarm switch.

Abstract: A thermal-type overload relay which uses a bimetallic element for sensing overload currents includes a shifter controlled by the bimetallic element to shift a release lever to which is attached a spring. The spring controls a movable board which has two reversible stable positions corresponding respectively to turn off or on a pair of normally open contacts and a pair of normally closed contacts.The movable board is a molding of insulated material carrying a pair of spaced insulated contacts and also includes a segment which is externally visible to display an indication of which pair of contacts is open and which is closed.

Abstract: A blown circuit breaker indicator utilizing an illuminating device such as a light-emitting diode for indicating whether either a thermal electrical or magnetic circuit breaker has been tripped. The indicating device is provided in a circuit parallel to the main switch of the circuit breaker and includes a reactive element such as a capacitor.

Abstract: An automatic overload tripper which uses a push button to press a bent bimetal strip down against a spring which assures that a hook at an end of the bimetal strip can keep good electrical contact with a contact plate, and the hook can trip automatically at overload. The spring also pushes against the bimetal strip so that it will not restore its original position by itself after cooling, for safety purposes.

Abstract: A circuit breaker having a manually-resettable handle which extends when the breaker is tripped by a circuit overload. An indicator lamp housed within the handle is lit when an overload condition occurs. The handle also has a lens for allowing light from the lamp to be visible. The far end of the handle has a wedge-shaped member for breaking the main circuit between two main contacts in the circuit breaker when an overload occurs. The wedge-shaped member also has two conductive sheets on its upper and lower surfaces for completing the circuit for the indicator lamp when the overload condition occurs. When the handle moves as a result of a circuit overload, the wedge-shaped member of the handle moves in between the main contacts in the circuit breaker and separates them thereby breaking the main circuits.

Abstract: A split case circuit breaker is fitted with a bracket assembly which defines a rectangular boss to cover the smaller circuit breaker boss on the front face of the breaker housing. An actuator link operates the otherwise conventional breaker mechanism inside the housing, and has a free end portion coupled to a rocker pivotably provided in a rectangular recess defined for it in the rectangular boss of the bracket assembly.

Abstract: A single pole or multi-pole, manually or thermally operable overload protective circuit breaker contains in its main switching chamber an elbow lever which consists of an actuating arm and a main contact arm, and functions as active connection between an actuating element and a contact bridge member. The ends of the actuating arm and the main contact arm, which face away from the elbow joint, are articulatedly connected with a pressure button or the like actuating element and the contact bridge member, respectively. In any positions of swivelling from a folded, i.e. the circuit-breaking, to a stretched, i.e., an arrested circuit making position, of the elbow lever, the centers of the swivel joints are located on the central longitudinal axis of the circuit breaker, which axis extends toward the depth of an insulating housing of the latter.

Abstract: An automatic switch wherein a pivotal switch lever is trippable by means of either a solenoid, a thermal element or a hand lever. The grip member of said hand lever extends out through an opening in the forward side of the switch housing which is configured to communicate the actual state of the switch contacts to an external observer, regardless of the position of the hand lever. This is achieved through the use of a window mounted in the forward section of the switch housing near the hand lever opening and in the region of the forward end of the pivotal switch lever, which bears a pivotal detent lever and an indicator strip. This strip has one section which is disposed directly behind the window when the switch lever is in a certain position, but when the switch lever is in its other position that section is displaced from the window, effectively making it invisible to an outside observer.

Abstract: An indicator is provided for each of a number of preselected conditions and is actuated in response to the occurrence of the corresponding condition. The indicator remains actuated until manually reset even if the triggering condition no longer exists.