An electrical switch includes a fixed upper contact, a fixed lower contact, and a mobile contact blade. A fixed support bears the mobile contact blade, and the fixed support includes a front support branch and a rear support branch. Each branch includes a transversely-oriented horizontal notch, in the bottom of which is housed a transverse free edge of a respective front and rear section of the mobile contact blade. The fixed support includes two identical support plates spaced transversely apart.

A static and dynamic piece assembly for a key switch includes a static piece and a dynamic piece, an ejector rod being arranged in a middle section of the dynamic piece. The ejector rod being arranged on the dynamic piece of the static and dynamic piece assembly for the key switch increases contact sensitivity between the static piece and the dynamic piece; the ejector rod and the dynamic piece are formed in an integral structure by means of injection molding, such that connection strength between the ejector rod and the dynamic piece is improved; furthermore, installation ways of the dynamic piece are flexible and diversified. The static and dynamic piece assembly is simple in structure, convenient and practical, and increases the efficiency of contact and disconnection between the static piece and the dynamic piece, thus being suitable for large-scale promotion.

A valve assembly that provides reliable opening and closing valves at specified times despite changing performance characteristics of the valve is disclosed. The valve assembly includes a controllable valve selectively actuatable to control flow of a fluid therethrough, with the controllable valve having a variable valve open/close response time. The valve assembly also includes a plurality of sensors configured to measure current operational parameters of the controllable valve and/or the fluid and a valve controller programmed to process valve timing control instructions generated by an external source, process inputs from the plurality of sensors regarding the measured operational parameters of the controllable valve and/or the fluid, and provide an actuation signal to the controllable valve based on the valve timing control instructions and the inputs from the plurality of sensors, so as to control a timing of an actuation of the controllable valve.

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.

A switching contact is disclosed. The switching contact has an actuation section including a plurality of spring elements. The actuation section is less rigid in a first direction than an opposite second direction.

A relay includes an electromagnet, a plurality of springs having contacts which open and close in accordance with operation of the electromagnet and terminals, and a base which supports the springs, wherein at least one of the plurality of springs has a locked part which is locked on the base using resilience of the spring, and the base has a lock part which locks the locked part.

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.