Doduco Kg. Dr. Eugen Durrwachter

Doduco Gmbh + Co. Dr. Eugen Durrwachter

Doduco Gmbh+co.

Other

Mercedes-Benz Aktiengesellschaft

Eltro Gaselischaft Fur Strahlungstechnik

Doduco Gmbh + Dr. Eugen Durrwachter

Mercedes-Benz Aktiengesellshaft

Roland Michal

Horst Behnke

Karl E Saeger

Klaus Bahm

Bruno Gengenbach

Jens Radbruch

Ursula Mayer

Volker Behrens

Thomas Honig

Franz Prein

Jurgen Wiegand

Ludwig Scheiner

Ferenc Remenyi

Wolfgang Bosch

Thomas Bregel

Carl L Meyer

Joachim Ganz

Carl-Ludwig Meyer

An RFI shielding hood with an integral RFI filter arrangement for a distributor cap, so constructed as to provide strong attenuation in a predetermined broadcast and radio-telephone frequency range.

Ignition distributor cap with a shielding hood and shielding hood,

Material for electric contacts of silver with carbon

Ignition distributor for internal combustion engines

Semifinished product for electric contacts made of a composite material

Electrode for pulsed gas lasers

The distributor comprises a rotatably mounted rotor, which has close to its axis of rotation a first electrode and has at its end that is remote from the axis of rotation a second electrode, which is connected by an electric line to the first electrode. The distributor also comprises a housing, which is closed by a cap, which is provided on its inside peripheral surface with a plurality of peripherally spaced apart fixed electrodes for cooperating with the second electrode of the roto. The cap is further provided on its inside surface with a center electrode, which terminates at a distance from the first electrode of the rotor to form a spark gap therewith. To form a positive joint with the cap the embedded portion of the center electrode has a non-cylindrical peripheral surface, which is rounded and free of any edge.

The material for electric contacts having arc-quenching properties comprises an irreversibly cured polymeric molding compound, which contains 5 to 20 volume percent of a metal powder and optionally contains up to 40 volume percent of an additional filler consisting of an electrically non-conducting inorganic powder. The selected thermosettable molding compound can be cured without forming a liquid phase.

Material for electric contacts having arc-quenching properties

The power circuit breaker particularly for use in medium-voltage switchgear comprises contacting parts consisting of a contact pin, which is displaceable in the direction of its longitudinal axis, and a contact socket, which is coaxial to said pin and comprises a forward portion adapted to contact the pin. That forward portion of the socket is formed with axial slots dividing that forward portion into axial segments. Each of said segments comprises at its tip a covex portion, which protrudes radially inwardly and resiliently bears on the pin when the breaker is closed. In such breaker the pin has a forward portion, which comprises a tip and which has a length that is smaller than the largest depth to which the pin can be inserted into the socket. That forward portion consists of a composite material, which contains a metal having a high electrical conductivity and a material which releases quenching gases under the action of an electric arc. At least when the breaker is closed the pin and the socket are preferably surrounded by a sleeve for directing the flow of the quenching gases.

Electric power circuit breaker

The load-isolating switch comprises two coaxial electrodes 1 and 2, which are mechanically connected by an interposed insulator 3. A cam 4 is provided on the insulator 3 and is spanned by at least one contact bridge 5, which is axially displaceable by an axially displaceable slider 10, which has coupling elements 13, 14 for engaging the or each contact bridge 5. In one position the or each contact bridge 5 is in contact with both electrodes 1 and 2. The or each contact bridge is adapted to slide up on an inclined surface 4a of the cam to disengage the contact bridge 5 from one of said electrodes and is movable to a second position in which said slider is disengaged from at least said one electrode.

Electrical switching element

Growing community of inventors

Pforzheim, Germany

Roland Michal