Eaton Corporation

Christian Dragoni

Michel Hernandez

Pierre Rey

Emmanuel Hermet

Eric Buffet

Francois Rosaz

The invention concerns an electrovalve proportional to a field current supplying the field coil () axially enclosing a mobile core (), whereto is secured a push rod () sliding in a polar component () of the fixed magnetic circuit co-operating with the field coil, actuating a shutter () comprising at least a valve () co-operating with a seat () to open and close the shutter, return means () providing it with a stable neutral position relative to the seal when the field current is null, each valve being coaxial to the push rod and actuated thereby. The invention is characterized in that the mechanical linkage between the stem of each valve () and, either the stem of the adjacent valve, or the push rod, constitutes a punctual contact.

Proportional electrovalve for motor cooling liquid circuit

An electrical valve having three paths, of the type comprising a valve body which is in permanent communication with an apparatus, controlled by fluid, notably by pneumatic partial vacuum, and is in alternate communication with either a fluid source of energy or with an outlet region, the passage from source to such outlet region and back being controlled by the plunger of an electromagnet permanently subjected to the action of a return spring urging the plunger to close such source. The valve body forms a control chamber of small dimensions, located on the outside of the electromagnet parts, wherein which communicates with the three paths. An extension of the electromagnet plunger provided with a single stopper seal which controls alternatively the source of energy and the orifice of the outlet region extends into the control chamber.

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Alpes-Maritimes, France

Christian Dragoni