Bbc Aktiengesellschaft Brown, Boveri & Cie

Bbc Aktiengesellschaft Brown, Boverie & Cie

Gerhard Koerner

Horst Plettner

Walter Hahn

Edelwald Lutz

Rudi Weingaertner

Egon Orth

A hydraulic drive includes a pressure housing having a blind axial recess formed therein with a wall and a bottom, an accumulator piston with first and second opposite ends disposed in the recess, an energy accumulator in the form of springs disposed symmetrical to the central axis of the accumulator piston for continuously engaging the accumulator piston braced against the springs, a working piston in the form of a differential piston guided in the recess having a piston rod passing through the accumulator piston and disposed centrally in the pressure housing, the piston rod, the pressure housing and the accumulator piston defining the wall of the recess, the piston rod, the pressure housing, the first end of the accumulator piston and the working piston defining an accumulator space in the form of a hydraulic accumulator providing pressure energy for the hydraulic drive without requiring an external energy supply, the second end of the accumulator piston and the wall and the bottom of the recess defining a plenum for receiving spent hydraulic fluid at low pressure, and the accumulator piston separating the accumulator space from the plenum.

Hydraulic drive

A switch drive assembly includes a switch having a contact and a control shaft for actuating the contact and switching substantially currentlessly, and a drive having a drive motor, a flywheel accumulator connected to the drive motor for receiving a change from the drive motor immediately prior to a switching process, the flywheel accumulator being coupled to the control shaft for discharging during a switching process and executing a previously initiated switching process, the drive motor acting as a generator for generation of a self-sufficient voltage supply during discharge of the flywheel accumulator.

Switch drive

Growing community of inventors

Schriesheim, Germany

Gerhard Koerner