Abstract: Process for making an at least partially coated electrode active material wherein said process comprises the following steps: (a) Providing an electrode active material according to general formula Li1+xTM1?xO2, wherein TM is a combination of Ni and Co or Ni and Al and, optionally, Mn, and, optionally, at least one metal selected from Ga, Nb, Ta, Mg, Mo, B, Sn, V, W, Ti and Zr, and x is in the range of from zero to 0.2, (b) treating said electrode active material with at least one carbonyl compound of Co, and (c) treating the material obtained in step (b) with an oxidant.

Abstract: An insulating switching rod is used to initiate a drive movement into a moving contact of an electrical contact system of a switching device and to produce a contact force when the contact system is in the closed state. A tensioning apparatus is arranged in a cavity for a drive element of the switching rod in order to maintain the contact force, which has a greater contact force with a compact design, and ensures constant spring characteristics as well as low wear over the entire useful life. The tensioning apparatus is formed by a helical compression spring configuration or by two oppositely wound helical springs.

Abstract: A coupling device for electrically connecting a first conductor to a second conductor has a first connecting piece to connect the first conductor and a second connecting piece to connect the second conductor. The first connecting piece is joined to the second connecting piece via flexible connecting means or sliding or rolling connecting means such that a relative movement can be performed between the first conductor and the second conductor. In order to create a coupling device that features improved constant current stability while heating remains at the same level, a cooling unit is provided for cooling the coupling device.

Abstract: The invention relates to switchgear with switching devices that can be controlled by magnetic drive devices, especially vacuum circuit breakers, wherein the switching devices are arranged by blocks in a housing in correspondence with the number of phases to be switched, said housing enclosing the switching devices on three sides and said devices being releasably fixed by screws in the housing by a top and a bottom contact connection piece. The switching devices (VS) have separate housings that are formed by pole shells (PS) arranged as a mirror image of each other and the top and bottom contact connecting piece (KAo, KAu) form a top and a bottom cooling body (KKo, KKu) which are releasably fixed between separately arranged vacuum circuit breaker fixing webs (VB . . . ) of the pole shells (PS), wherein the top cooling body (KKo) is fitted in the peripheral area of the switching devices (VS) with ventilation slots (LS . . .

Abstract: The invention relates to switchgear assemblies having switching devices arranged in housings whose contact bolts can be deflected in a straight line and can be controlled by a magnetic drive device and are guided axially and radially by means of concentrically arranged slotted guides. The housings are formed by mutually opposite pole shells, and the slotted guides are each provided by rotating guides mounted at one end. The rotating guides each have a trapezoidal lever contour and are equipped with guide pins which extend outward and are mounted such that they can rotate in guide recesses in the mutually opposite pole shells. The rotating guides are each provided with a U-shaped bolt bearing in which a guide bolt is mounted. Switchgear assemblies such as this are used in the field of electrical power supply and distribution.