Patent · US Active

Control valve for a hydraulic apparatus with locking facility

US9611763B2 · kind B2 · utility

1Cited by

4References

5Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Thomas Fritsch · Lincoln, US
Josef Groschel · Gößweinstein, DE
Christoph Ross · Bamberg, DE
Barbara Pluta · Eggolsheim, DE
Alexander Fichtner · Herzogenaurach, DE
Hubert Burkard · Hirschaid, DE

Key dates

Filing date	Sep 3, 2013
Grant date	Apr 4, 2017
Priority date	—
Expiry date	Oct 16, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2001/0475
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A control valve for a hydraulic device, in particular a central valve of a camshaft adjuster for a reciprocating-piston internal combustion engine, having a holding component (1) in which a valve housing (3), a control sleeve (2) and a control piston (4) are arranged, wherein the control piston (4) is mounted so as to be loaded on one side by a spring and, on the other side, is mounted with limited axial displaceability in the control sleeve (2) by means of a locking ring (6), wherein the locking ring (6) can be fastened in the axial direction in an inner holder (14) on the holding component (1) and can be connected by a fixing device to a component of the control valve, and wherein the fixing device has fastening elements attached to the locking ring (6) and has matching recesses (10) in the valve housing (3) and/or in the control sleeve (2).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.