US 2006/0048824 A1 · Controllable solenoid valve

Abstract

Controllable solenoid valve in which, due to the interaction between a magnetic force caused by an electrical flow and a spring force acting against the magnetic force, at least one first sealing body in the interior of a valve housing is displaced in axial direction between two final positions whereby moving relative to its first sealing seat. The interior extends from one electromagnet to a connection. To enable, in a simple manner, a specific reproducible influencing of the sequence speed of cylinder controls in hydraulic drives and to prevent uncontrolled movements by these drives, the first sealing seat up to the first sealing body is provided with an axially extending cylindrical housing inside of which a slide is axially displaced according to the electrical flow. The cylindrical housing comprises radially oriented passages, whereby these passages are closed if the first sealing body is located in a final position in its first sealing seat or in the immediate vicinity of the first sealing seat, and the passages are opened if the first sealing body is located in the opposite final position.

Claims7

Dependent claims

-8. (canceled)

A controllable solenoid valve, comprising:

a valve housing;
a first sealing seat in the valve housing;
a slide which is displaceable in the valve housing in an axial direction of the housing between first and second rest positions;
a first sealing body which is seatable in the first sealing seat and is engageable by the slide to be displaceable in the axial direction with the slide;
a cylindrical housing which surrounds the first sealing body and the first sealing seat;
radial throughpassages in the cylindrical housing;
a spring acting upon the slide counter to the magnetic force to maintain the slide in one of the rest positions when the electromagnet is not sufficiently energized to drive the slide with force sufficient to completely overcome force of the spring;
and
a solenoid comprising an electromagnet, the solenoid being operatively connected to the slide so that sufficient electrical energization of the solenoid to produce a magnetic force sufficient to completely overcome force of the spring displaces the slide from one of the rest positions to the other of the rest positions;
wherein the radial throughpassages are open when the slide is in the first rest position and are closed when the slide is in the second rest position or in an immediate vicinity thereof.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/531,403Filed 15 Oct 2003

Priority

DE 102 48 501.115 Oct 2002

Published

9 Mar 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

F16K 31/0637
With fixed seats positioned between movable valve members: with ball shaped valve members
F15B 13/01
Details of servomotor systems ; Valves for servomotor systems: locking-valves or other detent i.e. load-holding devices
F15B 13/0402
Valve members; Fluid interconnections therefor: for linearly sliding valves, e.g. spool valves
F15B 13/0405
Valve members; Fluid interconnections therefor: for seat valves, i.e. poppet valves

Controllable solenoid valve

Life of this patent

Controllable solenoid valve

Life of this patent

Abstract

Claims7