Abstract: An electric power meter collar with external electrical connection points enables expedited connection of distributed energy resources to the customer premises or the electric power grid. The meter collar is installed between an electric meter and the meter socket box that the meter would otherwise plug into at the site of a customer who receives two-phase service from an electrical utility company, and has electrical connection points that are electrically upstream and downstream of the meter. It enables “plug and play” connection of on-site power generation resources since the collar includes both a receptacle for a “plug” from on site power generation and overcurrent protection.
Abstract: A safety plug, comprising: a housing a first metal blade a second metal blade a conducting device a bimetallic strip an isolating-equipment an elastomer a cover and an isolator, wherein all of its apparatus are all well-located even after encountering overloading. Both the bimetallic strip and the conducting device are fixed together in the housing of the safety plug thus makes sure that their restoring back at the same exact location. It increases the safety and the practical utility of the safety plug in this way.
Abstract: A switch device includes a case with a switch member pivotally engaged with the open top of the case. Two terminals extend from a bottom of the case and a bimetallic plate has a first end fixed to one of the terminals. A distal end of the bimetallic plate is located above the other terminal. A hooking member has one end connected to the switch member and the other end has a hooking portion with which the distal end of the bimetallic plate is engaged. The distal end of the bimetallic plate is lifted when the switch member is pushed to “ON” position. The hook portion is defined between first and second boards and the second board located lower than the first board is shorter so that the bimetallic plate is allowed to be deformed without obstruction when the switch device is overloaded.
Abstract: A safety switch includes a base having two terminals connected thereto and each terminal has a first contact point and a bimetallic plate is movably received in the base and has two second contact points which are located above the two first contact points. The two ends of the bimetallic plate can be bent when overflow. A first spring is biased between an inside of the base and the bimetallic plate. A button assembly is connected to the base and a second spring is biased between the button assembly and the bimetallic plate. The two ends of the bimetallic plate bend upward to cut off the circuit when current overflows.
Abstract: A circuit breaker switch is disclosed, including a rocker, an actuator, and a dielectric separator element. The rocker is positionable between a first on position and a second off position. The actuator element is coupled to the rocker such that it causes a first electrically conductive contact portion to move into contact with a second electrically conductive contact portion when the rocker is in the on position. The dielectric separator element is urged between the first and second electrically conductive contact portions in the event of excess current being passed between the first and second electrically conductive contact portions.
Abstract: The present invention relates to an overload protector structure of an extension cord receptacle that mainly comprised a fire wire conducting plate of a switching unit (or a receptacle unit) connected with an overload protector in the extension cord receptacle to extend properly, the overload protector has a housing member, a power input plate exposed at the said housing member, a temperature sensing plate is fixedly connected to an inner end of the power input plate, the said overload protector further penetrates outward through a slot channel from a contact point, the fire wire conducting plate can fitly extend into the said slot channel and contacts with the contact point of the temperature sensing plate, thereby, the effectiveness of rapid connection and eliminating the soldering joint point is possessed between the overload protector and the switch unit (or the receptacle unit).
Abstract: A circuit breaker includes a housing having an open top and a closed bottom, with a button pivotally connected to the housing at the open top, and with a grounding prong, an output blade and an input blade extending out of the housing through the closed bottom. The output blade has an inner end provided with a first contact. The input blade has an inner end formed with a bimetal strip that is provided with a second contact normally engaged with the first contact. The button is further formed with a leg extending towards the strip, and a hook is pivotally connected to the leg and has an arm beneath the strip. A neon indicator has first and second terminals. The second terminal is electrically connected to the output blade, and a resistor is electrically connected between the grounding prong and the first terminal of the neon indicator.
Abstract: A switch device includes a switch case having a passage in a top thereof so as to receive a button therein. A non-conductive plate extends laterally from the button. A first terminal plate and a second terminal plate respectively extend from the casing. A first contact point extends from a side of the second terminal plate. A bimetal plate is connected to the first terminal plate and has two legs extending therefrom. A conductive member is connected between the two legs and connected to the second terminal plate when the button is pushed. The non-conductive plate is located between the conductive member and the second terminal plate when the button jumps up and the two legs are deformed away from the second terminal plate.
Abstract: An improved structure of a depress-type safety switch comprising a main body, press button, actuating block, the top section of the main body being opened to accommodate the press button and the actuating block, and the bottom panel being provided with a left, center and a right terminal for connection to a socket and a power source wire, the interior of the actuating block being provided with a main spring, characterized in that the right side of the actuating block is a top section with a positioning slot having a V-shaped engaging block, and the right terminal is connected upward to a bi-metallic engaging plate made from two metals of different properties, the top end of the engaging plate is a fastening peg extended to the positioning slot of the actuating block, thereby the depression of the press button allows the fastening of a fastening peg at the bi-metallic engaging plate with the engaging block to form a closed circuit, and if the current is overload or a short circuit is formed as a insult of high
Abstract: A safety switch includes a casing having a first terminal plate having a first contact point and a second terminal plate to which an end of a bimetal plate is connected. A second contact point is connected to a tongue of the bimetal plate. A switch member is connected to the casing and a connection member is connected to an end of the switch member. An end of the connection member has a recess and an end of the bimetal plate is movably located in the recess.
Abstract: The present invention relates to an overload protection device of a press type switch in which the switch main body has slide grooves within the bouncing range of the free end of the conductive strip. The shape of the slide grooves is formed by a plurality of slide rails. A push-pull element is pivotably connected to the inside of the press button. A cross bar is fitted to the bottom of the push-pull element while both ends of the cross bar are disposed in the slide grooves. Accordingly, the push-pull element is able to change path and locating position in the slide grooves. Moreover, the conductive strip can be controlled in on/off-state by means of the force in different directions. Beside, the free end of the conductive strip is kept in an independent state so that the conductive strip is transformed into the off-state in case of overload. Consequently, the safety of the user can be ensured.
Abstract: An overload-protection push-button switch with retractable mechanism is disclosed. The switch is characterized in that a retractable rocker actuator is used to actuate or release a conducting leaf. The rocker actuator comprises a main body and a sub-body. The sub-body is retractable with respect to the main body under a rotation action or a sliding action. When the bimetallic blade is in an overload position, the sub-body will be pushed and make the rocker actuator became disabled. As a result, the conducting leaf goes into a broken position. By means of the above structure, the trip action of the switch is assured and the space occupied by the rocker actuator is as small as possible under a condition without increasing the complication and loading of the bimetallic blade.
Abstract: An overload-protection push-button switch with automatic resetting mechanism of pull-push type is disclosed. The switch is characterized in that a pull-push rod and a floating rocker are used to transmit a force on a pressing stem to a conducting leaf. Moreover, a guiding mechanism including a guider and a guided-member on the floating rocker is used to guide the moving direction of the floating rocker under the action of the pull-push rod. Thus, the direction force on the pressing stem can be different from the moving direction of the nose of the floating rocker by which the conducting leaf is actuated. Moreover, in case of overload, a positioning unit for positioning the pressing stem will be unlocked and thus the pressing stem can automatically return to its reset position. In view of the above, a push-button switch that has simple and easily-assembled structure as well as an operation of exactly tripping is available.
Abstract: An improved structure of a depress-type safety switch comprising a main body, press button, actuating block, the top section of the main body being opened to accommodate the press button and the actuating block, and the bottom panel being provided with a left, center and a right terminal for connection to a socket and a power source wire, the interior of the actuating block being provided with a main spring, characterized in that the right side of the actuating block is a top section with a positioning slot having a V-shaped engaging block, and the end terminal of the right terminal is connected upward to a bimetallic engaging plate made from two metals of different properties, the top end of the engaging plate is a fastening peg extended to the positioning slot of the actuating block, thereby the depression of the press button allows the fastening of a fastening peg at the bimetallic engaging plate with the engaging block to form a closed circuit, and if the current is overload or a short circuit is formed a
Abstract: The present invention relates to a safety switch for protecting circuit having a change-over push-pull rod between a button shade and a conductive strip. The top end of the push-pull rod is pivotally connected to the button shade while the bottom end thereof includes a pushing part and a pulling part which are not the same length. The push-pull rod and the external end of the conductive strip are not coupled, but situated in a pushing and pulling change-over relationship. In cooperation with the inner and outer spring elements and a play groove, the conductive strip will be collapsed in a manner of reverse deformation for a disconnection when the current is overloaded, without restricted by the pushing part and the pulling part. Besides, the safety switch includes the ON-OFF change-over function under ordinary state. The configuration is therefore simplified and the user safety is much more ensured.
Abstract: An overload-protection push-button switch with automatic resetting mechanism of pull-push type is disclosed. The switch is characterized in that a pull-push rod and a floating rocker are used to transmit a force on a pressing stem to a conducting leaf. Moreover, a guiding mechanism including a guider and a guided member on the floating rocker is used to guide the moving direction of the floating rocker under the action of the pull-push rod. Thus, the direction force on the pressing stem can be different from the moving direction of the nose of the floating rocker by which the conducting leaf is actuated. Moreover, in case of overload, a positioning unit for positioning the pressing stem will be unlocked and thus the pressing stem can automatically return to its reset position. In view of the above, a push-button switch that has simple and easily-assembled structure as well as an operation of exactly tripping is available.
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 titterboard type switch with security structure, wherein a relay unit is disposed between two terminal legs connected with power wires and an electrothermal conductor is connected between the relay unit and one of the terminal legs, whereby when powered on, the electrothermal conductor is slightly heated and in the case of overload, the electrothermal conductor creates high temperature. The relay unit is disposed with a resilient movable contact pushable by a sliding member for controlling whether the movable contact contacts with the other terminal leg or not. The sliding plate is pushed by a swinging plate which is shifted by a push button via a linking unit.
Abstract: A push button switch with override interruption structure, including a push button, a switch box, a front cover, a base, a support rod, an electric contact and an override interruption structure. The support rod is disposed under the bottom of the push button and the electric contact is fitted with the support rod, whereby by means of depressing the push button, the electric contact is moved downward to close a circuit. The override interruption structure includes a shaft seat disposed with an L-shaped resilient restricting cantilever having a projection. The override interruption structure further includes a power cutting member formed with a chamber at lower end facing the restricting cantilever. In the case of override, the bimetal blade is thermally deformed to act on the restricting cantilever, making the projection thereof disengaged from the chamber of the power cutting member, whereby the power cutting member is moved upward along with the push button by the restoring force into a power cut state.
Abstract: A plug with security device, including a housing, several conductive insertion plates adapted to be inserted into a power socket, conductive wires connected to an electric appliance and a security device. The insertion plates are connected with the conductive wires in the housing. The security device is disposed between at least one insertion plate and one conductive wire and includes a casing, a disconnector seat disposed therein, a thermal bimetal blade disposed on the disconnector seat, a movable contact disposed on the bimetal blade, a fixed contact disposed in the casing and connected with the conductive wire to naturally contact with the movable contact, and an insulative separating structure. When an excessively large current passes through the electric appliance, the bimetal plate is bent to separate the movable contact from the fixed contact and open the circuit.
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: A switchable circuit breaker having a housing, stationary and moveable contacts, a switching member for actuating the contacts to assume a first condition in which the contacts are open and a second condition in which the contacts are closed, and a breaker is disposed within the housing to interrupt current flow through the contacts in response to the current flow exceeding a predetermined level. The switching member includes a pusher moveable between an advanced position in which the pusher acts on the contacts to assume a contact opening condition and a retracted position in which the pusher releases the contacts to assume a contact closing position. The pusher is guided within the housing so as to convert a linear motion of its drive end into a steplike motion of its active end in order to provide a snapping transition between the closing and opening conditions of the contacts, thus assuring "non-teaseability" in the switching operation.
April 28, 1994
Date of Patent:
April 21, 1998
Siemens Electromechanical Components, Inc.
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 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 receptacle including a casing to hold a positive contact metal plate, a negative contact metal plate, which is connected to the negative terminal of power supply, and a ground plate, a T-shaped copper plate mounted inside the casing and connected to the positive terminal of power supply, a bimetal strip connected to the positive contact metal plate and disposed in contact with the T-shaped copper plate, an insulative member turned about a post inside the casing and supported on a spring, and a press button mounted on the outside of the casing, wherein when the press button is depressed, the bimetal strip is forced away from the T-shaped copper plate by the insulative member to cut off power supply; when the receptacle is electrically overloaded, the bimetal strip is heated to deform and to disconnect from the T-shaped copper plate to cut off power supply.
Abstract: A combined electrical plug and circuit breaker that interrupts current when excessive current flows. A housing receives a body portion with extending blades. A bi-metallic strip opens silver contacts when an overload occurs. A rod member can reset the contacts when the overload problem is solved.
Abstract: An overcurrent breaker switch includes an upper housing including a lever block with a push rod and a lower housing engaged with the upper housing. First and second blades are mounted to the lower housing, the second blade having a dual metal plate mounted thereon. A lever plate base is mounted in the lower housing and has a first end for releasable electrical connection with the dual metal plate and a second end. A conductive lever plate is pivotally mounted to the second end of the lever plate base and actuatable by the push rod under operation of the lever block. The conductive lever plate has a first end for releasable electrical connection with the first blade and a second end on which a pressing piece is formed. An insulating plate is mounted between the lever plate base and the dual metal plate and has an insulating piece below the pressing piece of the conductive lever plate. A spring is mounted under the insulating piece to provide an upward force.
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: A circuit protecting device somprises mainly a housing, an insulation piece, a bimetallic blade, a spring and a press button. The housing has a cover and a main body provided with two partition blocks forming a spring slot and a press button slot communicating with the spring slot. The bimetallic blade has an end fastened to one of two terminals and has another end provided with a contact piece in contact with another one of the two terminals. The spring embracing the outer end of the insulation piece is received in the spring slot of the main body of the housing while the press button is received in the press button slot of the main body of the housing. The inner end of the press button is provided with an insertion hole for receiving therein the outer end of the insulation piece.
Abstract: A thermally and manually operable circuit breaker switch has a housing and first and second conductive plates mounted in the housing. This first plate has a first contact. A cantilevered bimetallic blade is mounted on the second plate and has a free end and a second contact. This second contact is mounted on the free end opposite the first contact. The switch also has a push button with a lateral isolating tab slidably mounted together in the housing. A spring is mounted in the housing for outwardly urging the push button and causing the tab to keep apart the first and second contacts. Also, included is a push rod slidably mounted in the housing transverse to the length of the bimetallic blade and aligned with its free end. Thus, depression of the push rod flexes the blade and separates the first and second contacts to allow the tab to keep the contacts apart.
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: A low voltage high-amp circuit breaker having a substantially rectangular bimetallic bistable element and a pair of terminals extending from the side thereof. The bistable element is attached to have one end move from a first normal electrically conductive position to a second non-electrically conductive position. The manual reset circuit breaker includes a manual reset lever and a non-conductive heat resistant extension blade connected to the reset lever via a rotatable shaft. The extension blade being positioned adjacent the moveable end of the bistable element and when the element is moved to its second position, the blade is moved to prevent the element from returning to its first conductive position until the circuit breaker is manually reset.
Abstract: A low voltage high-amp circuit breaker (20) having a substantially reactangular bimetallic bistable element (41). The bistable element is attached to have one end move from a first normal electrically conductive position to a second non-electrically conductive position. The manual reset circuit breaker includes a manual reset lever (29) and a non-conductive heat resistant extension blade (64) connected to the reset lever via a rotatable shaft (56). The extension blade being positioned adjacent the moveable end of the bistable element and when the element is moved to its second position, the blade is moved to prevent the element from returning to its first conductive position until the circuit breaker is manually reset. A push-to-trip button (80) pushes plate (88) downward causing fingers (84) to move upward lifting bracket (92) to deform bistable element (41) placing the breaker in an open circuit condition.
Abstract: This invention relates to a circuit breaker switch having a cover, a housing, two copper plates, a bimetallic blade, a push button and a push rod, wherein the bimetallic blade acts as a bridging contact between the two copper plates at a rated current to conduct electricity. When there is a current overload, the bimetallic blade, because of its character, will bend and depart from the two copper plates to cut off current. The circuit may be open even if the current is not at an overload value by a user pushing the push rod inwardly to separate the bimetallic blade from the two copper plates when necessary. The contact points of the two copper plates are caused to stay in a switch-disengaging position by action of an insulating plate.
Abstract: A contactor device for a circuit breaker includes a stationary contactor having a stationary contact, and a stationary conductor secured with the stationary contact and constituting an electricity path extending from an external terminal to the stationary contact, and a movable contactor having a movable contact movable to detachably touch the stationary contact, and a movable conductor secured with the movable contact and constituting an electricity path extending from the movable contact to another external terminal.
Abstract: The invention relates to a contact breaker of the type that includes a slider (22, FIG. 1) that slides longitudinally within a housing to allow a moving contact 50 (FIG. 3) on a sudden actin bimetal strip (44) to pass through a slider opening (62) against a fixed contact (40), or to keep the contacts apart after they have briefly moved apart. The state of the contact breaker is indicated by a signalling electrical circuit which includes a moving contact (80, FIG. 1) mounted on the slider and having a pair of clips that connect coplanar signalling contacts (68, 70). The slider has a lower extension (92, FIG. 4) that prevents arcing between power contacts. The housing includes two half-casings (16, 18, FIG. 7) joined at a longitudinal joint 19, one carrying power terminals (32, 34) and the other carrying signalling terminals (74, 76). The slider keeps the contacts (50, 40, FIG. 3) separate even if the front housing surface is blocked.
Abstract: A unitary switch and circuit breaker (10) includes a switch circuit (14, 16, 22, 24, 26, 56, 57, 58) with first and second contacts (28, 30), the switch circuit (14, 16, 22, 24, 26, 56, 57, 58) being actuable to assume a first condition (FIG. 4) in which the contacts (28, 30) are open and a second condition (FIG. 5) in which the contacts (28, 30) are closed, and a circuit breaker (24, 26, 32, 42, 56, 57) integrally formed with the switch circuit (14, 16, 22, 24, 26, 56, 57, 58) for actuating the contacts (28, 30) to interrupt current flow through the contacts (28, 30) in response to the current flow exceeding a predetermined level and for subsequently preventing the resumption of current flow through the contacts (28, 30) until reset.
Abstract: The insulating housing of the device supports two spaced-apart stationary terminal/contact assemblies. A resilient, thermally-responsive, snap-acting, movable contact support member, which has a movable contact and a cam-follower thereon, is connected at one end to one assembly and is movable to three positions relative to a stationary contact on the other assembly, namely: a contact-closed position wherein the movable contact engages the stationary contact, a contact-open position and a contact-tripped position. An outwardly projecting rod-like actuator slidable on the housing, and which has a cam on its inner end, is axially movable inwardly and outwardly between an "on" switch-closed/breaker-reset position and an "off" switch-open/breaker-tripped position (wherein it is biased by a spring), respectively. In actuator "off" position, the cam blocks the contact support member and prevents the movable contact from closing.
Abstract: A circuit breaker having a thermally operated snap acting bimetallic actuator is miniaturized for replacing or retrofitting in place of a conventional blade or clip type fuse heretofore used for limiting current overload in a given current carrying circuit and is standardized to permit manufacture of the circuit breaker for operation in either the cycling or non-cycling mode, by providing a sized and shaped housing in which the interacting elements are so mounted and aligned that the terminals are parallel to each other and to the longitudinal line of the housing, and the bimetallic actuator is so mounted, nested, and longitudinally aligned in assembled position between the interengaging elements to provide substantial amplitude of movement of the bimetallic element and the contact thereon for coacting relation with a generally fixed contact in the cycling mode.
Abstract: Disclosed is a bi-metallic strip connected to one electrical contact tab and holding a contact which works together with a fixed contact carried by another electrical contact tab. The mobile contact and the connection of the other tab with the bi-metallic actuator are diametrically opposed along a diameter that is inclined with respect to the median plane where the plane passes through the center of the bi-metallic actuator and between the coplanar connecting tabs.
Abstract: A push button actuated overload protection switch includes a bimetal member which holds a contact bridge in a latched ON position. The contact bridge is configured as an approximately rectangular angle lever and is mounted on a switch rod so as to be freely pivotal and displaceable in the axial direction. The contact bridge is under the pressure of a switch spring which is supported at the switch rod. During turn-off the contact bridge is released by the bimetal member and pressed against an oblique abutment at the housing and pivoted into an oblique engagement position, whereby a projection on the switch rod engages the contact bridge. Subsequent actuation of the push button causes the contact bridge to be transferred into its ON position in which the pressure of the switch spring presses it into engagement behind a contact piece of the bimetal member and into contact with a contact terminal.
Abstract: In an overload protective circuit breaker, a fixed contact element and a bimetal contact element are arranged in parallel beside each other. When a current overload occurs and the bimetal junction is heated, a movable contact post on a snap disc mounted on the bimetal contact element moves away from a fixed contact post on the fixed contact element, thereby breaking circuit, and an insulating wall piece of a slider body will be moved automatically into the gap between the two contact posts so as to break circuit and cut off an arc forming between the two moving-apart posts and accelerating cooling of the bimetal junction. Returning the circuit breaker to circuit-making position requires depression of a push button which is preferably a leg of an L-shaped switch member, the other L-leg being constituted by the slider body.
Abstract: A preferably push button-actuated overload protective circuit breaker with bimetal cut-out is devised for being plugged into a flat female plug socket. The circuit breaker comprises a bimetal contact element and a fixed contact element besides each other and consisting each of an elongated punched-out part of substantially flat right parallelepiped shape. They have outer ends protruding out of a circuit breaker housing and lying with their flat longitudinal sections in the same plane, while their inner free ends inside the housing have their flat longitudinal sections lying in two different planes which are parallel with, but spaced from each other. A bimetal snap element is fastened at one end thereof, on the inner free end of the bimetal contact element and overlaps with its opposite slewable end, which bears a bimetal contact post, the inner free end of the fixed contact element and a fixed contact post thereon.
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 push button-actuated overload protective circuit breaker with bimetal cutout comprises a housing between the sidewalls of which two contact segments are held in position, and a push button and a pressure spring associated therewith are guided for longitudinal displacement therebetween. The ends of the contact elements which protrude from the housing are devised as plug-in prongs arranged in parallel with each other. In order to provide a circuit breaker of such small size that it can be plugged into a flat-shape fuse female plug socket, the contact elements are provided in a middle zone thereof, each with a step-like bend the height of which corresponds to about half the height of the interior space in the housing. The bent contact ends then come to rest against the opposite internal surfaces of the housing sidewalls.At one of the contact ends of a first contact element there is fastened a bimetal snap spring with one side thereof and extends transverse to the direction in which the contact elements extend.
Abstract: A bimetallic circuit breaker with a first or main set of movable and stationary contacts. The circuit breaker includes an electrical insulating slide restrained in one position by the movable contact and interposed between the contacts when these contacts are in the open position. The slide is carried by an insulator frame received within a housing of electrical insulating material. The frame is provided with a second or auxiliary set of movable and stationary contacts. The slide is positioned relative to the auxiliary contacts so that it keeps the auxiliary movable contact separated from the corresponding stationary auxiliary contact. When the bimetal flexes sufficiently, the slide is released and the main contacts open, and at such times the slide moves away from the auxiliary movable contact, permitting the auxiliary contacts to close for signalling, at a remote location, the opening of the main contacts. The circuit breaker includes a case having an end wall.
Abstract: A miniaturized plug-in cutout/switch is controlled by a push-button (1) and comprises a connection and disconnection mechanism using a captive ball (4d) circulating in a track cage (4a), having two positions selected by successive applications of pressure to the push-button (1) corresponding to the switch connected and switch disconnected states. The cutout/switch includes an independent locking mechanism for a movable contacts (11) which is operated by a bimetallic strip (8) which triggers the opening of the contacts when a current overload occurs in the protected circuit. The simple design of the apparatus permits a miniaturized construction which is particularly advantageous for its use on panels where small dimensions and the rationalization of its shapes make it suitable, for example on aircraft panels.
May 2, 1983
Date of Patent:
April 23, 1985
L'Equipement et la Construction Electrique en abrege E.C.E.
Abstract: A miniature circuit breaker comprises a housing having a bimetallic element forming a movable contact and connected to one terminal of the circuit breaker and a fixed contact juxtaposed with the movable contact. A slide carries a conductive element adapted to interconnect the two contacts and is shiftable between a position in which an insulating tongue of the slide is interposed between the contacts and a position in which the conductor no longer electrically interconnects the two. A spring biases the slide into the first-mentioned position upon displacement of the bi-metallic element as a result of a current overload.
Abstract: A bimetallic circuit breaker with an electrical insulating slide interposed between the contacts thereof in the contacts open position in which the terminals, the bimetallic element, the insulator slide, the button (connected to the slide) and the spring biasing the button and the slide to the contacts open position of the circuit breaker are all carried by one of the terminals so that they may all be preassembled together and inserted into the housing for the circuit as one sub-assembly.
Abstract: A circuit breaker which has an adjustable setting includes a first pair of bars for connecting the circuit breaker to a current supply, and a second pair of bars for connecting it to a load. The circuit-breaker current-supply connecting bars are normally in contact with the circuit-breaker load-connecting bars, and one of the pairs of bars is adapted to be released from contact with the other pair of bars at a predetermined release point upon the application of a predetermined amount of heat to the pairs of bars. An adjustment device is provided for varying the release point of the one pair of bars from the other pair of bars, so that upon a predetermined current passing through the pair of bars, the one pair of bars is heated to the predetermined amount of heat and released from contact with the other pair of bars.