A key switch includes a base, a key cap, a supporting mechanism, a link bar and a buffer member. The key cap is disposed above the base. The supporting mechanism is connected to the key cap and the base to allow the key cap to move relative to the base upwardly and downwardly. The link bar includes a lower linking end. The buffer member and the base are two independent components. The buffer member is disposed on the base and made of material softer than material of the base. A restraining structure is formed on the buffer member. The lower linking end movably passes through the restraining structure. When the key cap moves relative to the base upwardly and downwardly, the lower linking end is driven to move within the restraining structure correspondingly, so as to reduce noise during movement of the lower linking end relative to the base.

The present disclosure envisages a mechanism (100) for indirect access to an actuator (210) on an apparatus (200) disposed within a housing (300). The mechanism (100) comprises a bushing (10), a spring-loaded shaft (20), an arm (30), a first stopper (40) and a pedestal (50). The spring-loaded shaft (20) passes through the bushing (10) and is configured to reciprocate through the annular passage (12). An arm (30) is disposed within the housing (300), and is coupled to the shaft (20). The first stopper (40) is received on the shaft (20) operatively below the arm (30). The pedestal (50) is disposed between the arm (30) and the first stopper (40). The pedestal (50) is configured to facilitate abutment of the arm (30) with the actuator (210). The arm (30) is configured to press the actuator (210) when the shaft (20) is linearly displaced.

A force-controlled-switch comprises a diaphragm spring element and an absorber-plate. The absorber-plate is configured to absorb kinetic energy of the force-controlled-switch. In particular, the absorber-plate absorbs a part of the diaphragm-spring-element's kinetic energy.

A device for switching medium and/or high voltages has a spring-loaded drive for driving a kinematic chain. At least one energy storage spring and at least one damping element for generating a drive movement with specific drive characteristics are included. The at least one damping element is an active damping element. The damping is actively determined during switching or it is predetermined, in particular depending on environmental variables and/or the type of switching situation, by changing the settings of the at least one damping element.

An actuator for a high-speed switch is proposed. The actuator can include a frame having multiple mounting plates and columns. The mounting plates have parts installed thereon or movably supported thereby. The columns maintain the space between the mounting plates. A permanent magnet is installed on one of the mounting plates so as to face the second driving plate, and an elastic member is installed on the mounting plate that faces the mounting plate having the permanent magnet installed thereon, so as to provide force for the movement of the second driving plate.

Aspects of the present disclosure include a damper control system having a casing configured to detachably couple from a conventional air register having a damper assembly movably controllable by a manual lever, a motor assembly mounted to the casing, an actuating linkage assembly movably attached to the motor assembly and configured to detachably couple with the manual lever that controls the damper assembly, wherein one or more dampers of the damper assembly are in a closed position when the actuating linkage assembly is in a first position and in an open position when the actuating linkage assembly is in a second position, a memory mounted within the casing, and one or more processors communicatively coupled with the memory and mounted within the casing, the one or more processors being configured to cause the motor assembly to drive the actuating linkage assembly between the first position and the second position.

An on-load tap changer is provided having a plurality of modules, each of which is operable to change taps in a transformer winding. The tap changer includes a motor connected to rotate at least one shaft. The at least one shaft is connected to the tap change modules and is operable upon rotation to cause the tap change modules to each perform a sequence of operations that effectuate a tap change. A multi-turn absolute encoder is connected to the at least one shaft. A monitoring system is connected to the encoder and is operable to determine from the position of the at least one shaft where the tap change modules are in the sequence of operations.

An assembly for preloading a cable rotary-pendulum kinematic system is provided. The assembly includes a rotational body of a cable rotary-pendulum kinematic system. The rotational body is configured to rotate about the longitudinal axis thereof and is immovable in the direction of the longitudinal axis. The assembly further includes at least one gas spring surrounding the rotational body and which may be compressed in the direction of the longitudinal axis. The assembly further includes primary cables, which force-lockingly connect the rotational body to the gas spring in such a way that a rotational motion of the rotational body causes compression of the gas spring, whereby the assembly is preloaded.

An assembly for preloading a cable rotary-pendulum kinematic system is provided. The assembly includes a rotational body of a cable rotary-pendulum kinematic system. The rotational body is configured to rotate about the longitudinal axis thereof and is immovable in the direction of the longitudinal axis. The assembly further includes at least one gas spring surrounding the rotational body and which may be compressed in the direction of the longitudinal axis. The assembly further includes primary cables, which force-lockingly connect the rotational body to the gas spring in such a way that a rotational motion of the rotational body causes compression of the gas spring, whereby the assembly is preloaded.

A high speed switch comprises an interrupter unit connected to a main circuit and including a movable electrode and a driving electrode for opening or closing the main circuit; a driving unit including a repulsion coil for providing a driving force for moving the movable electrode of the interrupter unit, and a repulsion plate disposed opposite to the repulsion coil; a guide rod part connecting the movable electrode of the interrupter unit to the repulsion plate, having a latch groove formed therein, and reciprocating vertically according to movements of the repulsion plate; and a state-holding unit for regulating the movement of the guide rod part, wherein the state-holding unit comprises: a latch pin; a latch elastic member; and a latch coil.