Abstract: A first fixed terminal includes a first support portion and a first extending portion. The first support portion is located in a closing direction with respect to a movable contact piece. The first support portion supports a first fixed contact. The first support portion extends from the first fixed contact in a first lateral direction. The first lateral direction is one direction in a longitudinal direction of the movable contact piece. The first extending portion is connected to the first support portion. The first extending portion extends in the closing direction from the first support portion. The first extending portion is disposed apart from the movable contact piece in the first lateral direction.

Abstract: An electrostatic clamp for use in a lithographic apparatus includes a layer of material provided with burls, wherein an electrode surrounded by an insulator and or a dielectric material is provided in between the burls. The electrostatic clamp may be used to clamp an object to an object support in a lithographic apparatus.

Abstract: An integrated microspring switch may be provided for relatively high frequency switching applications. A spring arm may be formed over a microspring dimple, which may be hemispherical and hollow in one embodiment. When the spring arm contacts the dimple, the spring dimple may resiliently deflect away or collapse, increasing the contact area between the spring arm and the dimple.

Abstract: An actuator for remote operation of a switch, such as a recloser-type circuit breaker in a power distribution network, comprises an electric mechanism including an electric motor and electro-magnetic clutch mechanism, which is energisable to connect the motor drive to mechanically operate the switch on command and which is otherwise mechanically disengaged from the switch such that the switch may operate freely, and a receiver arranged to receive remotely transmitted command signals for the electric mechanism.

Abstract: Planar magnetic motor (100), characterized by the fact that it comprises a plurality of magnetic poles (111, 121) made of a ferromagnetic material placed at the center of planar coils (110, 120) constituted by at least one layer of turns produced on the surface of a substrate (150) made of a ferromagnetic material, the turns being wound and connected to each other so as to combine the magnetic fluxes generated by the magnetic poles (111, 121). The invention can be used to produced magnetic motors and microactuators.

Abstract: A circuit breaker contact closing solenoid assembly within an air circuit breaker includes an upper drive link connecting between a lower drive link and the circuit breaker closing prop driver to release the closing prop driver post from the charging ratchet retainer post. Actuation of the circuit breaker closing solenoid rotates the upper and lower links to allow the charging ratchet to rotate and release the charged closing springs and drive the circuit breaker contacts to the CLOSED condition.

Abstract: A remotely controllable circuit breaker device for interrupting current in a circuit path between a source and a load includes local and remote monitoring capabilities and a gear mechanism for reliable remote control of the interruption mechanism. The device includes a first contact and a second contact cooperatively arranged in the circuit path so as to provide current from the source to the load. At least one of the contacts is disposed on a contact carrier which is movable for interrupting the current provided to the load. The gear mechanism includes a motor with a rotatable shaft which responds to open and closed control signals generated from a remote location, and a gear, rotatably responsive to the rotatable shaft, for controlling the contact carrier so that the circuit path is interrupted and established, respectively. The gear mechanism controls the contact carrier using a coupling arrangement, which has a first part coupled to the contact carrier and a second part coupled to the gear.

Abstract: The gearing for motor driven timing relays comprises an appropriate number of gear pairs which are in continuous engagement with each other and are rotatably mounted on a turntable which is driven by a setting shaft.

Abstract: An electric motor-driven timer comprises a contact actuator having an arm which is rotatably fixed in the intermediate position thereof and is provided with an actuating portion at each end thereof for driving movable contacts. The actuator is provided with a cam follower which engages a cam surface member being integral with a driven-gear. The driven-gear is set in a predetermined position by a time setting means.

Abstract: A timing device is provided with a synchronous motor for rotating a driven gear containing a cam member through a predetermined angle corresponding to a selected time period, a clutch mechanism including an arm supporting a pair of gears on a common shaft for coupling the synchronous motor to the driven gear and further including a means for keeping a first gear of the pair in continuous engagement with the driven gear, a plurality of leaf switches for selectively energizing or de-energizing the synchronous motor, an actuator cooperating with the cam member for controlling the leaf switches, an electromagnetic device coupled to the clutch arm and actuator for controlling their movements to couple the synchronous motor to a second gear of the pair and to control the starting of the timing interval, and a means for initially providing an angular rotation to the driven gear to set the selected time period.

Abstract: An electrical motor-driven timer has a frame, which has a substantially rectangular section and which is comprised of a main plate, a substantially L-shaped frame member and a switch mechanism support member. A switch mechanism is mounted on one side of the support member. An electromagnetic device is received in the substantially lower half part of the frame for operating the switch mechanism. A timing mechanism is received in the substantially upper half part of the frame for actuation and timing operation of the switch mechanism.

Abstract: An automatic reset timer includes two separate switches having operators held in timed-out position by individual latches. A clutch is released by one operator when the timer is timed out. A solenoid also controls the latches for the two switches and also controls the clutch directly. A clutch mode selector is accessible outside the case and may be set for on delay, off delay, or neutral. In neutral the clutch is not controlled by the solenoid and is released only when the timer is timed out. Other mode selectors outside the enclosure control solenoid operation of the switches. They may be caused to transfer from timed out to timing position by either solenoid energization of deenergization. A third position provides for instantaneous operation of one switch by the solenoid. Selection of clutch and switch modes of operation makes a single unit field adjustable in many different combinations, simplifying application to a given problem and reducing models required to be stocked.

Abstract: In a timing relay including an indexing gear wheel driven by a clutched gear wheel which is driven by an electric motor and in which an actuating element is controlled by means of a cam coupled to the indexing gear wheel with the actuating element being used to operate contact elements on displacement thereof, the actuating element is disposed parallel to the indexing gear wheel and is also arranged to control engagement and disengagement of the clutched gear wheel with the indexing gear wheel.

Abstract: A motor timer comprises a prefabricated timing mechanism block including a drive motor, a reduction gear, a clutch and a timing gear; a prefabricated contact mechanism block including a leaf-spring contact assembly and an actuating member for actuating the leaf spring contact interconnecting; and means for assemblying the blocks at a final stage of assembly.

Abstract: An automatic reset timer having a motor and a separate solenoid operated clutch. The solenoid also actuates a switch to timing position, through a first latch, the switch being held there by a second latch. Both latches are released by the timing mechanism. The double latch allows the switch to remain in timing position regardless of the solenoid position. A solenoid lever is mounted behind a mechanism plate and carries mode selectors for setting the type of control of the switch and clutch by the solenoid. These mode selectors are accessible through openings in the plate normally covered by the timer motor.