Abstract: A wallbox dimmer switch includes an actuator mounting frame having a platform portion that is receivable in a rectangular wallplate opening having standard toggle-type dimensions. The dimmer switch includes a pushbutton actuator for a switch and an adjacently located dimmer actuator that extend substantially parallel to a first side of the platform portion. The pushbutton actuator includes a user-engageable portion having an outer surface of which at least the end portions are defined by a portion of a substantially prolate spheroid for minimization of undesirable coupling between the adjacent actuators during actuation by a user. The switch may also include an actuator for an airgap switch extending through the platform portion and an array of indicator lights that are displayed through openings extending to an actuator-presentation surface of the platform portion.

Abstract: A wallbox dimmer switch includes an actuator mounting frame having a platform portion that is receivable in a rectangular wallplate opening having standard toggle-type dimensions. The dimmer switch includes a pushbutton actuator for a switch and an adjacently located dimmer actuator that extend substantially parallel to a first side of the platform portion. The pushbutton actuator includes a user-engageable portion having an outer surface of which at least the end portions are defined by a portion of a substantially prolate spheroid for minimization of undesirable coupling between the adjacent actuators during actuation by a user. The switch may also include an actuator for an airgap switch extending through the platform portion and an array of indicator lights that are displayed through openings extending to an actuator-presentation surface of the platform portion.

Abstract: The vehicle-mounted device control unit is provided with an electrical appliance selection switch for selecting an electrical appliance whose function is to be regulated, a manual input device for regulating various functions of the electrical appliance selected with the switch, a loudspeaker, a display unit, and a controller. Signals from the electrical appliance selection switch and the manual input device are supplied to the controller, which controls the manual input device, the loudspeaker and the display unit. The manual input device is provided with knobs, actuators for loading external forces on the knobs, and detecting devices for detecting the manipulated states of the knobs. The controller drives the actuators, the loudspeaker and the display unit by supplying drive signals matching manipulated states of the knobs and carries out force feedback to a user.

Abstract: A grinding tool includes a handle with a grinding wheel connected thereto and driven by a driving device. An opening is defined in the handle and a switch device is received in the opening with which a cover is engaged. A recess is defined in an outer periphery of the cover and a hole is defined through the cover. A pushing member is slidably engaged with the recess and a stepped protrusion extending from an underside of a first end of the pushing member is engaged with an inner periphery of the hole. A gap is defined between a second end of the pushing member and a surface defining the recess. An activation member is connected to the sliding member via the hole and has a convex contacting the switch device. A spring is connected between the cover and the activation member. The activation member shuts off the switch device when the sliding member is pulled by the spring by pushing the second end of the pushing member.

Abstract: The present invention is to provide a safety switch in an electronic device comprising a seat having an opening and a trigger switch fitted in a cavity of the opening, wherein one end of a signal cable extended from the trigger switch is formed as a connector, and the signal cable sequentially run over two spaced apart cylinders disposed in the opening and passes through a gap on the bottom of the opening for exposing the connector outside the seat, such that, while a pulling force exerted on the signal cable, an additional support provided by the cylinders will prevent the pulling force from transmitting to the trigger switch along the signal cable to cause a disengagement of the trigger switch from the signal cable.

Abstract: In a switch, a pad bottom is provided on a rubber switch. The pad bottom has a first opening and a second opening. A pad top is operable to move the pad bottom so as to depress the rubber switch. The pad top includes a first leg portion which has a hook and a second leg portion which has a screw hole. The hook is engaged with the pad bottom through the first opening. A screw threads in the screw hole through the second opening to fix the pad bottom to the pad top.

Abstract: A wallbox dimmer switch includes an actuator mounting frame having a platform portion that is receivable in a rectangular wallplate opening having standard toggle-type dimensions. The dimmer switch includes a pushbutton actuator for a switch and an adjacently located dimmer actuator that extend substantially parallel to a first side of the platform portion. The pushbutton actuator includes a user-engageable portion having an outer surface of which at least the end portions are defined by a portion of a substantially prolate spheroid for minimization of undesirable coupling between the adjacent actuators during actuation by a user. The switch may also include an actuator for an airgap switch extending through the platform portion and an array of indicator lights that are displayed through openings extending to an actuator-presentation surface of the platform portion.

Abstract: The present invention comprises a reset mechanism for an overload relay. More particularly, the present invention comprises a mechanism that will reset a plurality of overload relay within a starter in a motor control unit. A single point-to-two point overload reset mechanism allows for the use of a single manual door reset button and extension arm to depress the single point-to-two point overload reset mechanism, which in turn depresses a plurality of overload relay reset buttons. Following contact with the overload relay reset buttons, the single point-to-two point overload reset mechanism returns to a non-contact position with respect to the overload relay reset buttons.

Abstract: A manual operator assembly is provided for an interlock assembly. The interlock assembly includes a motor assembly that is locked in one of two positions by a brake assembly. The brake assembly is electronically controlled, but also includes a brake release pedal. The manual operator assembly includes a lever which is coupled to a shaft which is further coupled to a cam. When the lever is rotated, the cam engages the brake release pedal so that the interlock assembly may be operated manually.

Abstract: An actuator mechanism, for a circuit breaker having an operating handle, which includes a slider assembly and a mounting plate assembly. The slider assembly has a rigid, generally planar member with at least one notch. The mounting plate assembly has at least two generally parallel, spaced flanges and is structured to mount on the circuit breaker housing. One of the at least two flanges is structured to cooperate with the notch to allow the slider assembly to be slidably coupled to the mounting plate between the at least two flanges.

Abstract: A push-pull switch includes an actuating mechanism whose actuating tappet is engaged in a thread in the handle. By this arrangement, a pulling movement on the handle is converted into a rotational movement of the actuating tappet. As such, balls mounted as latching elements in the actuating tappet can be released gently from a secure latching position in the ON state.

Abstract: A decorative frame that may be made of metal is arranged at the periphery of a manual operation button, and the manual operation button with decorative frame are designed so that they may be fixedly attached to the exterior cover of a camera body within an opening in the cover.

Abstract: Disclosed is a direct current switch which comprises, in a housing, a slidable actuator, one stationary contact and one pseudo stationary contact both fixed to the housing, a seesaw-like plate having one movable contact and one pseudo movable contact fixed to its opposite ends, and a swingable pusher operatively connected to the actuator to apply a pushing force to the seesaw-like plate all the time. The seesaw-like plate is supported by a fulcrum support to be balanced in the middle. The seesaw-like plate has an engagement piece fixed thereto in the vicinity of the movable contact, and the actuator has a resilient catch-and-hold piece fixed thereto on the movable contact's side.

Abstract: A removable latch assembly is provided to connect a contact block to an electrical switch operator in an industrial controller. The latch assembly comprises a housing having a spring disposed therein, to which a rotatable collar is mounted. A contact block may also be connected to the rear side of the housing. The collar, including a tab, is initially disposed in a first locked position to allow the latch assembly to be mounted onto a shaft of the operator. The collar may then be rotated to a second self-retained unlocked position that allows the user to pull the latch assembly away from the electrical switch. When this occurs, the spring automatically rotates the collar back to the locked position to permit the latch assembly to once again connect the contact block to the operator.

Abstract: A switch operating unit for a camera is assembled in the switch supporting frame of the front cover thereof and provided with an inner button, an outer button, and a dial for switch operation. Under the buttons and the dial, there is provided a metal supporting plate for supporting same. Under the supporting plate, there is provided a flexible printed circuit (FPC). Since the contact of the supporting plate is in contact with the ground pattern on the FPC, even when static electricity is generated with or applied to those buttons or the dial, such static electricity is directed to the ground through the supporting plate. Thus, the electronic circuit element mounted on the FPC is protected against static electricity.

Abstract: A switch mechanism module for a switch including a first housing member, a second housing member, and an operating mechanism between the first and second housing members. The first housing member has first and second integral stops depending therefrom, and the second housing member has first and second integral legs depending therefrom. The operating mechanism rotates upon rotation of the handle of the switch causing rotation of the rotor of the switch. Movement of the operating mechanism ceases upon engagement of the operator cam with the stop of the first housing member. The integral legs of the second housing member provide reinforcement for the stops to prevent movement of the stops in the direction of the rotating cam.

Abstract: An operator is prevented from slipping out when it is pulled, and an operating apparatus equipped with such an operator can be realized at lower production cost. A hole is formed in the operator. A member to be operated is formed with a pawl such that when the operator is pushed down onto the member, the pawl is engaged with the hole. The operator is thereby firmly coupled with the member. Under this arrangement, if the operator is pulled, the member is also moved integrally with the operator. Moreover, the operating apparatus further includes a case comprising a hole. Thus, the pawl is further prevented from slipping out of the hole because any outward bending of the pawl caused by the pulling is restricted due to a peripheral part of the hole of the case.

Abstract: In one aspect, the invention provides a semiconductor sensor which includes a first single crystal silicon wafer layer. A single crystal silicon structure is formed in the first wafer layer. The structure includes two oppositely disposed substantially vertical major surfaces and two oppositely disposed generally horizontal minor surfaces. The aspect ratio of major surface to minor surface is at least 5:1. A carrier which includes a recessed region is secured to the first wafer layer such that said structure is suspended opposite the recessed region.

Abstract: An electronic system may include a mounting structure that allows a switch to be firmly attached to the electronic system. The switch may have one or more snap lock mechanisms attached to a body of the switch. The mounting structure may have an opening sized to allow the switch and the snap lock mechanisms to be inserted into the mounting structure. The mounting structure may include an undercut portion in a wall of the mounting structure. The mounting panel may also include a channel configured to accept a width of the snap lock mechanism. The undercut portion of the wall may be located in a channel wall. When the switch is inserted into the mounting structure, the snap lock mechanism may engage the undercut portion of the mounting structure to securely hold the switch to the mounting structure.

Abstract: A circuit interrupter handle mechanism is disposed on the face of a molded case circuit breaker. The handle mechanism has a rotary handle, which may be rotated through approximately 90° of rotation from a disposition of circuit interrupter conduction to a disposition of circuit interrupter non-conduction. The handle is not centered over the linear handle of the circuit interrupter per say, but rather is disposed in the upper left hand corner, so that a larger lever arm can be utilized. Furthermore, the larger lever has a handle opening into which the hasp of a lock may be placed to lock the circuit breaker in the open state for servicing and the like. Because of the length of the handle more hasps can be disposed therein than if the handle was disposed exactly in the center of the circuit breaker case. Lastly, the disposition of the circuit breaker rotary handle provides an indication of the conduction status of the molded case circuit breaker. If the handle is in a generally horizontal position, i.e.

Abstract: Disclosed is an improved switch structure having forcedly opening-and-locking mechanism installed therein. It is responsive to the sticking of the movable and stationary contact elements for forcedly breaking an associated heavy-current carrying circuit which otherwise, would remain closed through the stuck contact elements. The forcedly opening-and-locking mechanism comprises an auxiliary contact section spring-biased to retain the stationary contact element in conductive condition to the associated circuit. It is responsive to the sticking-and-rising of the movable and stationary contact elements for allowing the stationary contact element to be apart from the conductive position to the associated circuit by yielding the rising force of the stuck contact elements until the locking position is reached, in which position the stationary contact element is kept in non-conductive position.

Abstract: The invention relates to an actuator for a safety switch provided with at least one insertion slot with inclined insertion guides for the actuator, having a holder which can be fastened to a part whose open and closed positions are to be monitored, and which is fitted with the key mounted on it such that the said key can be moved, the key comprising a foot, and the holder being provided with a recess for the key on the side facing the key and with a bearing for the foot, the said bearing extending around the recess and allowing the foot to be displaced and rotated.

Abstract: In one aspect, the invention provides semiconductor sensor which includes a first single crystal silicon wafer layer. A single crystal silicon structure is formed in the first wafer layer. The structure includes two oppositely disposed substantially vertical major surfaces and two oppositely disposed generally horizontal minor surfaces. The aspect ratio of major surface to minor surface is at least 5:1. A carrier which includes a recessed region is secured to the first wafer layer such that said structure is suspended opposite the recessed region.

Abstract: One or two runner wires are added to a sliding-type switch to facilitate movement of the slider with respect to the glide plate and frame. A first set of runner wires is placed in slots in the side walls of the glide plate and are engaged by the slider to provide smooth movement of the slider along the runner wires. A further runner wire engages slots the top of the slider and the inner wall of a frame member about the glide plate and provides additional low friction rails for the slider to move along.

Abstract: This invention relates to the area of microelectromechanical systems in which electronic circuits and mechanical devices are integrated on the same silicon chip. The method taught herein allows the fabrication of thin film structures in excess of 150 microns in height using thin film deposition processes. Wafers may be employed as reusable molds for efficient production of such structures.

Abstract: A retrofit switch actuator for a circuit breaker control switch in a power distribution network provides for remote control and automation of the control switch. A solenoid of the switch actuator is energized to move the output shaft of the solenoid. The movement of the solenoid output shaft is transferred by a connector mounted at one end to the solenoid output shaft and mounted at the other end to the control shaft of the circuit breaker to rotational movement of the control shaft. The motion of the control shaft mechanically engages the existing circuit breaker control switch.

Abstract: A keypad is disclosed having a rigid plate with openings. A flexible sheet of the keypad has keys which protrude through the openings of the rigid plate. The keypad further includes a rigid insertion plate and a flexible contact sheet with dome-shaped contacts configured to contact the keys. The rigid plate and the rigid insertion plate have a curved shape, where the flexible sheet and the flexible contact sheet are located between the rigid plate and the rigid insertion plate to conform to the curved shape. The curved shape is concave along a longitudinal axis of the keypad and convex along the keypad transversal axis. Further, the top surfaces of the keys protruding from the openings are contoured to conform to the curved shape.

Abstract: A radius actuator including an actuating member having a shaft which projects into the holder and carries the ball on that end. The ball is fixedly clamped into a clamping part which consists of two halves connected with one another by screws and which is situated in a hollow chamber of the holder. A spring is between the clamping part and the holder in the hollow chamber. The holder is provided with two mounting bores which lead into the hollow chamber and are alignable with the screws of the clamping part.

Abstract: A protective cover for a hand operated computer control device. The device includes a cover having a cavity shaped to receive a control device such that the control device is releasably held within the cavity. The cover further includes weakened sections creating a push button member oriented to be adjacent a button on the control device when the control device is positioned within the cover. The push button member is moveable into the cavity to engage and actuate a button on the control device when a user presses down on the push button member.

Abstract: A system for actuating electrical equipment, in particular a high-voltage section switch or a high-voltage grounding section switch includes, in a control box, a rotary drive unit for driving the contacts of the equipment. A control circuit includes "end-of-stroke" contacts associated with the contacts of the equipment. The system includes a portable electric motor having a self-contained power supply. The motor is equipped with a mechanical coupling for mechanically coupling the motor to the rotary drive unit, and is provided with an electrical connector for connecting the motor to the control circuit.

Abstract: Switches incorporate a material layer which becomes fluent upon reaching a predetermined temperature such that the switch body moves to correspond to the individual position and shape of a user's hand. The material layer is made to become fluent, and the layer then flows to correspond to the individual user's hand orientation and shape. In one embodiment, the layer of material is a foam which is fluent at human body temperature. The foam thus automatically corresponds to the shape of the user's hand when the user grips the switch body. In the second embodiment, the layer of material is actuated at a relatively higher temperature and a heating coil is provided to move the layer to that higher temperature.

Abstract: The present invention provides a handle for controlling a switch mechanism of an interior assembly of an electrical distribution device having a plurality of modules. The electrical distribution device has an enclosure for housing the interior assembly. The handle includes a first piece having an elongated shape with two ends. The first end is adapted to be manually controlled by an operator and has a mating surface. The opposite end is secures the handle to the switch mechanism. A second piece has a complimentary shape for abutting the mating surface of the first piece at least near the first end. The first and second pieces are fastened without discrete fasteners.

Abstract: A selector switch includes a knob, a bezel and a retaining clip. The retaining clip is mounted on the knob and secures the knob to the bezel. The retaining clip is C-shaped and has a tab centrally disposed on the retaining clip. When the tab is pressed by a tool, the retaining clip contracts and the knob may be detached from the bezel. The tab can be accessed through a slot between the bezel and the knob by a screwdriver. The knob, bezel and retaining clip can be made of plastic.

Abstract: A radius actuator for a safety switch includes a mounting, a spring-loaded operating key secured in the mounting and moveable between a slanted initiation position and a switch-actuating position. The operating key has a head assembly which is spring-mounted in a slider that is received in a recess of a locking wheel for to and fro movement. The locking wheel is rotatably supported in a mounting and has a cam so that a turning of the locking wheel causes the cam to move the slider in a direction of movement. The head assembly is supported outside the slide for tilting about a pivot axis in order to effect a slanted position of the operating key relative to the safety switch when turning the locking wheel.

Abstract: A radius actuator for a safety switch of the type mounted to a hinged member, such as a flap, lid or the like, having a cover, a holder and a key. The key is pivotally mounted upon the holder such that the key may be rotated about an axis perpendicular to the plane of the pivoting circle of the radius actuator as the hinged member is opened or closed. The key being spring-biased into an insertion position and the pivot angle of the key being adjustable by means of a setscrew received by the holder. The holder being pivotally mounted relative to the cover such that the holder may be rotated about an axis within to a plane of the pivoting circle of the radius actuator as the hinged member is opened or closed. The holder being spring-biased into an insertion position and the pivot angle of the holder being adjustable by means of a setscrew received by the holder.

Abstract: A mechanism (10) for actuating an electric circuit is shown including a switch box (11) fastened to a housing (26) to which a cover (60) is movably mounted. The threaded stems (54) of four de-energizing momentary switches (52) extend through and are held to the front wall (32) of the housing (26). The cover (60) includes a sleeve extending rearwardly of its broad surface front wall (62) and slideably received in a tubular extension (46) of the housing (26). A flange (72) on the sleeve abuts with ledges (50) formed in the tubular extension (46) to prevent movement therebeyond. The cover (60) can be pushed against the bias of coil springs (74) arranged concentrically around the stems (54) such that any point of the broad surface front wall (62) can be moved in an actuation direction to slide the actuating pins (58) slideable in the stems (54) of one or more of the de-energizing switches (52) to de-energize the electric circuit.

Abstract: A rectangular cavity is provided in an actuator lever intersecting with an upper edge of a shaft-receiving hole in the lever and receives a linearly slidable hard metal rectangular key having a cam on one edge for clamping the lever to the shaft. A screw engages threads on the key and is slidable with the key to a position where a distal end of the key is flush with or projects from a side surface of the lever, at which position the cam is free of the shaft-receiving opening, the key providing visual indication that the lever assembly may be positioned over the shaft without interference.

Abstract: An actuating mechanism for a plunger-type switch having alternative open and closed conditions and having a plunger movable between an extended position and a retracted position whereby said switch condition is changed by the movement of said plunger comprises a flat spring, having a first spring end, a second spring end and a middle portion, and a housing having an upper surface wherein the plunger-type switch and spring are positioned within the housing such that the first spring end is positioned in closely spaced relation to the plunger in the extended position and the middle portion of the spring bows above the housing upper surface such that application of a force to the middle portion of the spring and directed towards the housing upper surface compresses the spring advancing the spring first end toward the switch a distance sufficient to move the plunger to the retracted position and upon removal of the force the first spring end advances away from the switch a distance sufficient to allow the plunger

Abstract: In a limit switch, its rotational operation section B includes a rotary shaft 9 which is rotatably supported on a head housing 5, and an actuator 10 for turning the rotary shaft 9, and its switch section C comprises a detector 29 which is built in a switch housing 3, to detect particular detection parts 27a and 27b in a non-contact mode which are provided on the outer cylindrical surface of a cam 25 mounted fixedly on the rotary shaft 9, thereby to provide a detection signal. The head housing 5 and the switch housing 3 are formed as one unit. A limit switch which is simple in construction, has a small number of components in comparison with the conventional limit switch, can be miniaturized, has a long service life, and is reliable in operation, is provided.

Abstract: A switching mechanism interfaces a flexible shaft to a handle of a circuit interrupter which is rotatable in an arcuate path between an on position and an off position. The switching mechanism includes a handle attachment attached to the handle for rotating the handle between the on position and the off position, and a bracket pivotally mounted to the handle attachment and attached to the flexible shaft for movement thereby. The handle attachment may also extend a length of the handle. The switching mechanism may further include a baseplate for securing the flexible shaft thereto and attached to the circuit interrupter. The bracket may have a generally U-shape, two arms pivotally mounted to the handle attachment, and a base which is attached to the flexible shaft. The handle attachment may be generally U-shaped and have a base and two arms which each are pivotally mounted to one of the two arms of the bracket.

Abstract: A handle actuator is provided for a circuit interrupter that has a handle or toggle pivotally movable between operative positions. The handle actuator has a pair of pins that fit tightly on the handle, a pair of retainers coupling the pins in a rigidly spaced parallel relationship, and a pair of flanges fixed to the circuit interrupter via a base. The flanges are disposed on opposite sides of the handle and have arcuate slots that guide the pins coaxially with the pivot axis of the handle. The ends of the pins extend through the arcuate openings of the flanges and are received in the retainers. Connecting links pivotally couple the pins with a drive input for selectively driving the pins against the handle to move the handle between the operative positions. The relative position of the pins on both sides of the handle is constant, preventing wear on the handle due to rolling of the pins against the handle, impacts with the handle permitted by lost motion, or bending and twisting forces.

Abstract: The present invention relates to a wall switch plate adaptor for use by children or the disabled to turn off and on wall switches which are located above the reach of the potential user. The wall switch plate adaptor comprises a switch plate cover that includes raised areas to the left and right of the middle opening. These raised areas of the switch plate cover are used as guides for the flared edges wing-like projections at the end of an elongated member which projects a distance below the bottom edge of the switch plate cover. The wing-like projections fit in between the raised areas to the left and right of the opening in the switch plate cover. The top of the elongated member has a box channel shaped cross-section with flared edges forming wing-like projection has an opening in the center so the toggle switch can be put through when assembled.

Abstract: A device for actuating conventional toggle-type and rocker-type electrical wall switches such as light switches, particularly adapted for facilitating switch operation by children and handicapped persons who cannot reach the normal elevation at which such switches are installed, utilizes an elongated operating arm with a portion at one end for operating engagement with the switch, e.g.

Abstract: A housing to accommodate an alarm conducting clip is made of electrically insulating material having a small aperture at one end for an electric cord passing therethrough, a large aperture at opposite end having a passage formed in-between the apertures adapted to receive a pair of copper plates at inner top and bottom portions, respectively, and a pair of slanting slots at respective walls adapted to receive an actuated rod which is adapted to press a clip to close or to open at its free ends. The clip is formed in a V-shaped profile having the closed end inserted into the housing through the large aperture with the opposite free ends protruding therefrom. The constantly open free ends engage the two copper plates, respectively, that forms a closed circuit of the alarm. The free ends will be forced to close by the activating rod and thus disengage from the two copper plates and forming an open circuit of the alarm, thereafter.

Abstract: A hand-held orbital polisher includes a housing, an electric motor and hand-operated motor control device mounted in the housing, and a pair of handles closely coupled to a housing to position an operator's thumbs adjacent the control device. The control device includes an electrical switch having a slidable actuator and a pair of thumb-actuated levers to selectively move the actuator into either of two on positions or into an off position. The levers are pivotably mounted to the housing, have a collar drivingly connected to the actuator, and a thumb pad at one end. The pivots can be defined at the other end of the levers and the collar at the center, or at the center of the lever and the collar at the other end of the lever. One or both of the user's thumbs can be used to apply a force with a force on one lever being transmitted simultaneously to the actuator and thereby against the other beam whereby to force the two levers in one or the other position, the operator's hand never having to leave the handles.

Abstract: A switch actuating assembly supports and actuates a limit switch of the ball and roller type. The assembly includes a housing, a plunger movably positioned within the housing, and an end cap which closes off one end of the housing. The assembly is adapted to be mounted to a vehicle control panel utilizing conventional mounting hardware. Various ball and roller type limit switches are interchangeable with the housing body. The plunger is movable between a first detent position with the limit switch activated and a second spring loaded position with the limit switch deactivated.

Abstract: This is two embodiments of a sealed switch, one embodiment of which utilizes a plastic film which abuts the upper surface of the support portion and covers the upper edges of the walls defining the base and which is trapped between the upper edges of the walls defining the base and the cover portion forming a seal.The second embodiment utilizes a start button which comprises a disk like support which is formed of an elastomeric material that on assembly is trapped and squeezed between the upper edges of the walls defining the base and the cover portion forming a seal.

Abstract: A known switch is mounted on a base of a switch actuator assembly. When the switch is to be actuated, an input shaft and switch actuator member are rotated together relative to the base. A helical return spring urges the input shaft back toward the initial position. When the input shaft and switch actuator member have been rotated together to an actuated position, the switch is actuated and the switch actuator member engages a stop surface. During continued rotation of the input shaft from the actuated position to an overtravel position, a pin connected with the input shaft moves away from one end of a slot in the switch actuator member. A helical overtravel spring is deflected along with the return spring. Deflection of the overtravel spring urges the switch actuator member and input shaft back toward their initial position relative to each other.

Abstract: A molded case circuit breaker having an operating mechanism including a collapsible toggle linkage, an operating handle and a movable frame. The collapsible toggle linkage includes a rectangular cross section knee pin non-rotatably held within an open rectangular slot in an upper link of the linkage. The operating handle pivots about a first pivot point when moving between ON, OFF and TRIPPED positions. The operating handle pivots about a second pivot point when moving to a RESET position thereby reducing the lateral force component of the operating springs of the operating mechanism for reliable return of the handle to the OFF position. Also, bifurcated movable contact fingers are provided for pivotal movement about a fixed pin to break contact welds and a trapezoidal cross section shaft interconnects the movable contact fingers.

Abstract: A remotely positioned rotary operator handle for cooperating with a circuit breaker with a linearly movable handle. A housing is mounted over the circuit breaker handle. Within the housing a slide carrying a rack engages the circuit breaker handle which further engages a pinion gear sector mounted on a rotatable shaft. The rotatable shaft extends from the housing and has positioned thereon a motion translating device which translates between rotational motion and linear motion. The rotary handle extends from a housing which is flange mounted on a cabinet in which the circuit breaker is disposed. A corresponding motion translating device is attached to the flange mounted rotary handle which is in turn connected to the motion translating device attached to the rotatable shaft. The connection between the motion translators comprises a linearly moving link. The rotary handle has an extendable hasp which comprises part of the connection between the rotatory handle and the motion translating device.