A resetting element for transmitting resetting force to a thermal switch. The resetting element includes a first end and an elastic element configured to transmit a force received at the first end to the reset switch of the thermal switch, wherein the elastic element is prevents damage to the thermal switch by decreasing the force transmitted to the reset switch from the first end.

An on-load tap-changer has a transmission, a motor with an output shaft, and a diverter switch with a drive shaft. The transmission has a cam disk; a drive gear wheel; and a roller coupled to the drive gear wheel. The cam disk is connected the output shaft, which lies on a rotation axis of the cam disk. The drive gear wheel is connected to the drive shaft. The cam disk has an inner and outer contour, which are followed by the roller, and which each have a first region with a constant radius of curvature and a second region in which a distance of a respective contour from the rotation axis of the cam disk changes. During a rotational movement of the cam disk, the roller follows the first region of the outer contour, the second region of the outer contour, and then the first region of the inner contour.

An on-load tap-changer has a transmission, a motor with an output shaft, and a diverter switch with a drive shaft. The transmission has a cam disk; a drive gear wheel; and a roller coupled to the drive gear wheel. The cam disk is connected the output shaft, which lies on a rotation axis of the cam disk. The drive gear wheel is connected to the drive shaft. The cam disk has an inner and outer contour, which are followed by the roller, and which each have a first region with a constant radius of curvature and a second region in which a distance of a respective contour from the rotation axis of the cam disk changes. During a rotational movement of the cam disk, the roller follows the first region of the outer contour, the second region of the outer contour, and then the first region of the inner contour.

Provided is a spring drive cam for a spring drive of a circuit breaker including a disc-like shape configured for rotating around a rotation axis in the spring drive, whereby the disc-like shape comprises a radius (R) that changes depending on an angle (α) of the radius (R) relative to a base angle (α0), and whereby a rate (dR/dα) defined by a change of the radius (R) per change of the angle (α) is ≤0.3 mm/°.

A control device with limit switches is provided. The device has a container housing an electric circuit provided with one or more limit switches, and a driving assembly configured to control operation of a valve or an actuator through the limit switches of the electric circuit. The driving assembly has a shaft configured to be rotatably coupled to a valve or an actuator and one or more cams keyed on the shaft and is configured for driving the limit switches of the electric circuit. The shaft has a gripping surface and each cam has a radial clamping mechanism whose gripping members are arranged in correspondence of a through hole configured to allow to fit the cam onto the shaft.

A push switch includes: a hollow housing having an inner circumferential surface formed with a guide part; an operation button formed with a first ratchet tooth; a cam follower including a cam part, and a second ratchet tooth, and being movable up and down in an axial direction and rotatable in a circumferential direction; a first spring; an engagement piece engaged with the cam follower; a movable contact; a metallic contact member rotatable integrally with the cam follower; a fixed terminal including contacts to be switched by rotating the contact member; and a base on which the fixed terminal is fixed. The contact member defines a through hole at a rotation center of the contact member. The base includes a rotation axis part inserted in the through hole and serving as the rotation center of the contact member.

A push switch includes: a hollow housing having an inner circumferential surface formed with a guide part; an operation button formed with a first ratchet tooth; a cam follower including a cam part, and a second ratchet tooth, and being movable up and down in an axial direction and rotatable in a circumferential direction; a first spring; an engagement piece engaged with the cam follower; a movable contact; a metallic contact member rotatable integrally with the cam follower; a fixed terminal including contacts to be switched by rotating the contact member; and a base on which the fixed terminal is fixed. The contact member defines a through hole at a rotation center of the contact member. The base includes a rotation axis part inserted in the through hole and serving as the rotation center of the contact member.

A branded fleet server system includes a pre-assembled third-party computer system integrated into a chassis of the branded fleet server system. The pre-assembled third-party computer system is configured to execute proprietary software that is only licensed for use on branded hardware. A baseboard management controller (BMC) included in the server chassis couples with the pre-assembled computer system via one or more cables coupled to ports of the pre-assembled computer system. The BMC enables remote control of the pre-assembled computer system, such as remote power on and power off. An electro-mechanical device, such as a solenoid, presses a power button of the pre-assembled computer system based on control signals from the BMC to change a power state of the pre-assembled computer system.

The present invention relates to an actuating method and device which allows mechanically converting rotational movement into helicoidal movement, said helicoidal movement including considerable travel in the axial direction. To that end, the device comprises a rotating rod (1) inside a fixed outer body (2). The rod (1) comprises an emerging lug (4) sliding between two parallel surfaces (3) of the outer body (2), said parallel surfaces (3) being inclined with respect to the axial axis (5) of the rod (1).

A keyswitch uses a combination of springs connected in serial for providing a return force to a keycap of the keyswitch. When the keycap moves toward a base of the keyswitch beyond a transition position, one of the springs stops continuously deforming. It leads to an increment of the elastic coefficient of the combination of springs and an increment of the elastic stored energy by the combination of springs. Therefore, during a pressing on the keycap, the keycap can provide a light force feedback and then a heavy force feedback to a user. Further, the keyswitch can use a switch with a lateral motion, which can reduce influence of a resilient force produced by the switch on the up and down movement of the keycap. The keyswitch also can use an elastic piece disposed beside the keycap, which can provide a tactile feedback to the user.