A gas circuit breaker includes a sealed tank, a movable side main electrode and a fixed side main electrode in the sealed tank facing each other, a movable side arc electrode and a fixed side arc electrode in the sealed tank facing each other, a cylinder at a circumference of the movable side arc electrode, a piston in the cylinder in a slidable manner and forming a puffer chamber together with the cylinder, an insulation nozzle in the sealed tank, an exhaust pipe at a circumference of the fixed side arc electrode and exhausting heat gas, which is sprayed on an arc generated in the insulation nozzle in the opening electrode operation, to an outside, and a closing plate in the exhaust pipe. One or more vent holes leading the heat gas from an inside of the exhaust pipe to the outside is on a surface of the closing plate.

A rocker switching control element for electrical sliding roofs on a vehicle overhead panel has an actuation rocker formed as a switch with switching positions and is arranged on a substantially planar control panel. The actuation rocker is recessed such that it does not project beyond the panel edge region. The transition between the panel edge region and the actuation rocker is formed with the panel edge region forming over a first width a goblet-like edge set back by a first depth, and an adjoining edge, separated by a gap of width, of the actuation rocker, which edge is recessed by more than the first depth in the non-actuated state and set further back continuously over a second width by a second depth. The recess is shaped overall such that inadvertent actuation of the actuation rocker by an object significantly larger than a human finger is prevented.

A gas circuit breaker includes a driving side electrode having a driving side main contact and a driving side arc contact, and a driven side electrode having a driven side main contact and a driven side arc contact in a sealed tank. The driving side electrode is connected to an operation device. The driven side electrode is coupled to a bidirectional driving mechanism unit. A sliding guide, on which the driven side main contact slides, is provided on an inner periphery side of the driven side main contact. The driven side main contact is energized by a coil spring in a direction of the sliding guide and has two contact surfaces. Only during normal conduction, one of the contact surfaces contacts a projected portion of the sliding guide and the other of the contact surfaces contacts the driving side main contact.

The computer keyboard operable in motion includes keys and control circuitry, and communication means to connect the keyboard to an in-motion operable mobile computer. The keyboard has one key column for the thumb; one key column for the index finger; and one key column for the middle finger; one key column for the ring finger; one key column for the little finger. The keys on which the tips of the fingers rest at the same time do not form a straight row of keys. The keyboard enables not only touch typing but also voice/key interface mode operation of the smartphone to which the keyboard is connected. In the voice/key interface mode, the computer uses voice and the user uses key inputs to interact each other.

A gas circuit breaker includes a driving side electrode having a driving side main contact and a driving side arc contact, and a driven side electrode having a driven side main contact and a driven side arc contact in a sealed tank. The driving side electrode is connected to an operation device. The driven side electrode is coupled to a bidirectional driving mechanism unit. A sliding guide, on which the driven side main contact slides, is provided on an inner periphery side of the driven side main contact. The driven side main contact is energized by a coil spring in a direction of the sliding guide and has two contact surfaces. Only during normal conduction, one of the contact surfaces contacts a projected portion of the sliding guide and the other of the contact surfaces contacts the driving side main contact.