Hydraulic valve in particular cartridge valve

US10113566B2 · kind B2 · utility

Assignee

• Hilite Germany GmbH · DE

Inventors

• Juergen Goll · Collenberg, DE
• Andre Seidenschwann · Niederrodenbach, DE

Key dates

• Filing date: Jun 8, 2016
• Grant date: Oct 30, 2018
• Expiry date: Jul 18, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K31/0613
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydraulic valve, in particular a cartridge valve including a valve piston that is supported axially movable in a valve bushing and by which at least one operating connection, advantageously two operating connections are alternatively connectable with a supply connection and a tank drain, wherein the connections are configured with respect to a longitudinal axis of the valve bushing as slotted holes that extend over a limited distance in a circumferential direction and which are respectively protected by a screen element configured as a metal band which covers the slotted hole with a filter portion, wherein the screen element is arranged in a first groove enveloping the slotted hole and envelops the valve bushing in a second groove originating from the first groove on two sides, characterized in that the screen element includes a filter mask which includes a welding portion at a first end.