Abstract: A spring arrangement for operating a high and medium voltage circuit breaker comprising a cylindrical housing having a main axis, an actuation rod, a coil spring arranged in the cylindrical housing, coupled with the rod, and a coupling arrangement coupling an end of the spring with an end of the rod, wherein the coupling arrangement comprises an articulation for guiding an end of the rod in rotation with respect to the second end of the spring around a second axis perpendicular to said main axis and comprises sliding means for the translational guiding of the second end of the rod along said main axis.

Abstract: To provide an electromagnetic contactor that enables electrical connection work of connecting the electromagnetic contactor to another electrical component disposed in a current path to be performed easily and efficiently. An electromagnetic contactor includes a main contact portion; an auxiliary contact portion; a contact housing case that houses the main contact portion and the auxiliary contact portion; an electromagnet unit that drives a movable plunger coupled to a connecting shaft of the main contact portion; main contact electrodes project out of a case wall of the contact housing case to an outside; auxiliary contact electrodes that are connected to a pair of fixed contacts of the auxiliary contact portion and project out of the case wall to an outside; and an auxiliary contact external terminal portion that is connected to the auxiliary contact electrodes and is arranged on a portion of the case wall.

Abstract: An automotive vehicle has at least one access cover movable between first and second positions and a variable position ajar sensor that senses a position of the access cover. An electronic control unit has a normal mode and a learn mode. In the normal mode, the electronic control unit is responsive to a position of the access cover sensed by the variable position ajar sensor and determines that the access cover is closed when the sensed position matches a stored closed position stored in memory of the electronic control unit and that the access cover is ajar when the sensed position does not match the stored position. In the learn mode, the electronic control unit is responsive to a position of the access cover sensed by the variable position ajar sensor and stores that position in the memory of the electronic control unit as the stored closed position.

Abstract: A contact bridge arrangement for an electrical switch is disclosed that has a contact bridge holder and a contact bridge. The contact bridge holder is monolithically formed with a spring. The contact bridge is held on the contact bridge holder and movable along an actuating direction. The contact bridge is pressed against the contact bridge holder by the spring.

Abstract: Swivel actuating pressure switching devices and methods are described herein that include a shorting member that translates and rotates into contact with one or more terminals in response to the application of a specified pressure to a piston included in the switch. The rotation of the shorting member with respect to the one or more terminals can be controlled by a receptacle that can include flutes, which guide the rotational movement of the shorting member in response to fluid pressure that causes the translation of the piston.

Abstract: A circuit breaker including a trip unit having an internal support and a friction adjustment control system for knob control is provided. The internal support includes a first opening to receive a first rotary knob having one or more first smooth rings and a second opening to receive a second rotary knob having one or more second smooth rings. The trip unit includes a first knob control of the first rotary knob. The first knob control includes a first structural support, a first housing and a first spring installed in the first housing against the first structural support. The trip unit further includes a second knob control of the second rotary knob. The second knob control includes a second structural support, a second housing and a second spring installed in the second housing against the second structural support.

Abstract: The invention relates to an electrical switch for electrical coupling of an electrical conductor to a busbar, with the electrical switch having a contact element and an adjusting device, with the adjusting device moving the contact element during closing and opening of the switch, with the adjusting device rotating or pivoting the contact element, at least when the contact element is being lifted off the busbar.

Abstract: A signal generating module is provided. The signal generating module includes a processor, an arcuate elastomer, a first fixed contact, a second fixed contact, a first pin, and a second pin. The processor is disposed on the circuit board of an electronic apparatus. The arcuate elastomer is disposed in the electronic apparatus, and includes a first movable contact and a second movable contact. The arcuate elastomer has a portion exposed out from a housing of the electronic apparatus. The first fixed contact is fixed to the electronic apparatus corresponding to the first movable contact. The second fixed contact is fixed to the electronic apparatus corresponding to the second movable contact. The first pin is secured to the circuit board, coupled to the processor, and coupled to the first fixed contact. The second pin is secured to the circuit board, coupled to the processor, and coupled to the second fixed contact.

Abstract: An improved lockable fastener that can be employed in a circuit breaker application includes a first member and a second member that are threadably cooperable with one another and a locking member that extends between the first and second members to resist loosening of the first and second members. The second member includes a threaded shank that is threadably received in a first threaded portion of a cavity formed in the first member. The locking member includes a threaded body and a taper, with the threaded body being threadably receivable in a second threaded portion of the first member, and with the taper being at least partially receivable in a receptacle formed in the shank of the second member. The receptacle defines a seat on the shank, and the taper engages the seat to deform at least a portion of the shank into engagement with a ledge that is interposed between the first and second threaded portions of the cavity.

Abstract: A thermally compensated circuit breaker has a movable contact assembly (24) which mounts a movable electrical contact (24m) for movement between open and closed contacts positions with a stationary electrical contact (26). The contacts are maintained in the closed circuits position by a latching mechanism (24b, 28g) which prevents opening of the contacts through an opening contacts force provided by a spring (24e). A current carrying trip arm (40a, 44a) deflects upon sufficient I2R heating to transfer motion to the latch to separate the latch (24b) from the latch receiving catch (28g) to trip the circuit breaker. The trip arm (40a, 44a) is part of a pivotably mounted actuator assembly (40, 44) having a movable end portion spaced from the pivot disposed adjacent a motion transfer member (28c). A calibration screw (42a) is located so that the longitudinal axis is in line with a movable end portion of the actuator assembly and the motion transfer member.

Abstract: A circuit breaker includes an upper rail mounting device defined by a line terminal having a pair of spaced-apart jaws. A bimetal is adjusted by means of a calibration screw. An aperture is provided in an upper sidewall portion of a base of the circuit breaker for access to the calibration screw by a calibration device. The aperture is positioned so that the calibration device must pass through the jaws of the upper rail mounting device. This ensures that the calibration screw can only be operated when the circuit breaker is disconnected from an electrical supply.

Abstract: In an exemplary embodiment of the invention, a calibration arrangement and process for use in a circuit protective device are presented. An exemplary calibration assembly for use in the calibration process of the present invention includes a split clamp arm having a first opening for receiving and holding a calibration pin and a second opening for receiving an actuator key. A portion of the split clamp arm is divided into a first arm and a second arm by a channel which extends from a first end of the split clamp arm through the first opening and communicates with the second opening. The split clamp arm is opened by inserting the actuator key through the second opening and because of the preferred oblong or rectangular shape of the second opening of the split clamp arm, rotation of the actuator key therein forces the members forming the first opening of the split clamp arm apart from one another.

Abstract: A door-ajar switch assembly for a door movable between open and closed positions relative to an opening in a vehicle body. The switch includes a housing supported adjacent to the opening in a position of inward and outward adjustment. An actuator projects outwardly from the housing and is retractable inwardly to a switch-actuating position. A switch operator is mounted on the door and moves the switch-actuator to the switch-actuating position when the door is closed. The switch operator has an actuator-engaging front face. An adjustment member is secured to the front face of the operator to engage the actuator when the door is initially closed to retract the actuator beyond the switch-actuating position and push the housing inwardly to an adjusted position.

Abstract: A coin chute trigger assembly having separate coin paths for nickels, dimes, and quarters. A microswitch is positioned adjacent to each coin path. A trigger included in each coin path is operated in response to deposit of the appropriate coin through the coin chute to cause operation of the included or adjacent microswitch.

Abstract: There is a pair of cantilevered switch blades having cooperating electrical contacts mounted on their distal ends. The first blade follows a cam and the second is lifted by a pivotable ramp member to vary the distance between its contact and the cam, thereby varying the time the switch is closed. The switch controls a solenoid which controls the water flow to the icemaker tray, thus the size of the ice "cubes" is determined by the distance the second blade is lifted. The blade slides on the ramp as it is lifted so that the range of motion of the pivotable member is greater than the range of motion of the blade. The ramp is shaped so that equal amounts of movements of the pivotable member corresponds to equal increments of ice volume. A spring finger integrally formed with the ramp member cooperates with a notched member to provide a set of predetermined ice "cube" increments. The switch is one of a gang of blade switches that control icemaker functions.

Abstract: First and second contact bars are spaced apart in fixed positions. A pressure responsive ram has first and second positions of penetration into a casing which contains the bars and other elements. A bolt is disposed between the ram and a first element which is pivotable about the second bar between a first position and a second position. A second elemtn is coupled to the first element. When the ram is in its first position, the bolt places the first element in the first position causing the second element to establish a current carrying path between the bars. When the ram is in its second position, the bolt places the first element in the second position, causing the second element to break the current path. A device disposed between the belt and the ram exerts a biasing pressure on one end of the ram which maintains the ram in its first position. When a larger pressure is exerted on the other end of the ram, the ram is moved into the second position.

Abstract: A security device for installation adjacent a sliding door or window to detect movement thereof. A pair of telescopically constructed tubes include a plurality of batteries connected together to an audio alarm and visual alarm. A pair of movable contacts are disposed between the source of electrical power and the alarms and are movable together to complete the circuit by a depressible switch activated by the sliding door or window. The switch includes a rigid member slidably mounted to the tube with a threaded member fixed to the rigid member and extending towards the movable contacts. An adjustable nut threaded to the end of the threaded member allows for presetting of the space between the switch and the contacts thereby adjusting the sensitivity of the switch and security device to the movement of the sliding door or window.

Abstract: A key module for a membrane switch keyboard has a flat spring running diagonally to the key housing on the bottom side which, with the aid of a plunger, is bent for the operation of membrane contacts. The flat spring with one free end is inserted into a slot which is open toward the top and permits an adjustment of the flat spring by pressure loading on the free end or on the bottom side against the lower section of the flat spring, which is adjacent to the bent free end. The free end of the flat spring is rigidly retained in a slot at the key housing. For the adjustment of the operating force a compression spring is arranged inside the plunger and is supported against a cross-piece running over the flat spring.

Abstract: Disclosed is a printed circuit board assembly including an integral metal stamping having a plurality of conductive circuit paths received in complementarily-shaped recesses of a dielectric substrate. The integral metallic stamping includes an improved snap action switch having an improved actuator mechanism, an improved rotary switch of the type making on/off contact during rotation thereof, and an upstanding plug-like connector member receivable in a mating female connector. Each of the switches mentioned above as well as the plug-like connector can be formed separately in different printed circuit board assemblies.

Abstract: A miniature switch has an actuator block operated by a toggle lever and formed to include a recess in one side face thereof, the recess being open at its bottom and on one side and having a retaining portion. The upper part of a movable contactor is provided with an engagement portion loosely fitted into the retaining portion of the actuator block to mount the contactor in the actuator block. The arrangement is such that when the actuator block is covered by a switch housing, the inner wall surface of the housing is situated at the side of the movable contactor to prevent the movable contactor from becoming detached from the actuator block.

Abstract: A bulb-and-capillary type temperature sensor move a fulcrummed lever arm for effecting tripping of a snap-acting switch. The lever arm has a resilient bimetal strip cantilevered thereon which is biased at its free end away from the lever by an adjustment screw threaded through the lever arm. The lever arm contacts the temperature sensor and the bimetal strip contacts the switch for transmitting lever amplified sensor movement for switch actuation. The bimetal strip serves the dual function of ambient temperature compensation of switch calibration and absorbs sensor over-travel after switch tripping.

Abstract: A switch assembly controls a plurality of circuits through contact carrying walls of a switch housing disposed in angular relation to each other about a guide post slidably mounting actuator elements that are displaceable to pivot contactors into engagement with the contact carrying walls. The housing depends from a support panel through which the actuator elements are manually manipulated.

Abstract: A touch signal probe comprises a probe casing fixed to a shank body through a shank anchor, the probe casing containing a stylus shaft held for inclining relative to the probe casing, a fixed contact on the inner bottom of the probe casing, a contact receiving portion carrying a movable contact which is fixed to the stylus shaft and defines a set of contacts together with the fixed contact, and a spring operably located between the shank anchor and the contact receiving portion to urge the movable contact toward the fixed contact, whereby the displacement of the stylus shaft can be detected on the separation of the contacts.

Abstract: A low-voltage circuit breaker has a fixed contact and a movable contact which is attached to a pivoted contact carrier. Between the contact carrier and the movable contact, a contact pressure spring is arranged, which is designed as a coil compression spring. The contact carrier has an arm which extends to the vicinity of the contact-making end of the movable contact. The arm carries a setscrew which is positioned to act centrally with respect to a contact overlay of the movable contact. The setscrew limits the lifting of the movable contact or the contact overlay to the desired small extent, when a large current flows through the circuit breaker and exerts electrodynamic force on the movable contact.

Abstract: PCT No. PCT/US79/00927 Sec. 371 Date Nov. 1, 1979 Sec. 102(e) Date Nov. 1, 1979 PCT Filed Nov. 1, 1979An earthmoving scraper has a pivoting floor which pivots from a closed position to an open position to dump and spread material previously loaded into the bowl of the scraper. Various types of earth being loaded and spread require different dump openings of the pivoting floor and varying heights of the strikeoff blade which spreads the dumped earth. Heretofore, it has been difficult for the operator of the earthmoving scraper to selectively position the pivoting floor and strikeoff blade to insure a specific dump opening and a specific height of the earth material as it is spread.

Abstract: A control unit having a condition selector, an electrical switch having an actuator unit provided with an adjustable movement differential, a condition responsive device for actuating the switch when the condition responsive device senses certain conditions selected by the selector, and a lever arrangement carried by the unit and being operatively associated with the actuator unit of the switch and the device whereby the device can actuate the switch by the lever arrangement, the lever arrangement having a first adjustable lever operatively interconnected to the selector and acting as a main range lever. The first lever is operatively interconnected to the condition responsive device and to the actuator unit of the switch. The lever arrangement has a second adjustable lever operatively interconnected to the selector and to the actuator unit of the switch for adjusting the movement differential of the actuator unit of the switch.

Abstract: An electrical snap action switch for use in a temperature regulator has a movable contact assembly consisting of a conductive contact carrying arm movable between fixed stops and cantilevered within the switch housing, the contact arm being parallel to and cooperating with a Q-shaped snap-action spring, so that the arm carries the working current while the snap spring acts on the arm to make the switch monostable in operation between the stops.

Abstract: A circuit interrupter characterized by an insulating housing containing a circuit interrupter mechanism, calibration means operatively connected to the mechanism for adjusting operation of the contacts, the housing having a hole aligned with the calibration means, and a plastic plug in the hole, whereby a tamper-proof circuit interrupter is provided.

Abstract: A double throw electrical switch construction having a housing carrying a movable actuator unit for moving a snap switch blade of the housing over center to snap a contact portion of the blade between a pair of spaced contact stops carried by the housing with a contact force being sustained at the "trip point" of the switch construction by an actuator spring of the actuator unit being moved over center before the blade is moved over center by the snap movement of the actuator spring. The actuator unit includes an actuator plunger having lost motion means directly acting against the actuator spring whereby the actuator spring can move relative to the actuator plunger through the lost motion means thereof when the actuator plunger moves the actuator spring over center in either direction thereof.

Abstract: An ignition distributor for use in an internal combustion engine, the distributor having in known manner a fixed contact and a movable contact wherein there is provided a support for the fixed contact having a housing which contains a nut threadably engaged with an adjustment screw whereby angular divergence is permitted between the screw and said support for the fixed contact when the screw is rotated.

Abstract: A stab assembly for a circuit interrupter for use in drawout switchgear characterized by a circuit breaker movable into and out of contact with bus bars and having spaced terminals in substantial alignment with the bus bars, each terminal comprising a base and a pair of flexible contacts disposed on opposite sides of an axis and engageable with opposite sides of a bus bar, the base comprising lateral portions extending from the sides of the axis corresponding to the flexible contacts, a dielectric housing in which the base is pivotally mounted to affect rotation laterally of said axis, and the housing having a projection spaced from each lateral portion for limiting rotation therein.

Abstract: A distributor assembly of a type having a rotor, a cyclically operated moving contact carried on a spring-loaded arm within the distributor cap includes an adjustable stationary contact point which is directly advanced and retracted by rotation thereof under the action of an elongate rotatable rod extending to a position exteriorly of the distributor cap. Means are provided for simultaneously moving and continuously locking the adjustable point as it is moved so as to retain the spacing between the points of the distributor.