IP Library Granted Patent US 8,051,658
Granted Patent B2
US 8,051,658 · App. 12/727,946 · Granted Nov 8, 2011

Hydraulic element

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Quick Facts
Patent No.
US 8,051,658
App. No.
12/727,946
Granted
Nov 8, 2011
Kind
B2
Abstract

A hydraulic element, in particular for arranging in a pressure line between a master cylinder and a slave cylinder of a hydraulic clutch actuating arrangement, having a housing which has a master-cylinder-side hydraulic connection and a slave-cylinder-side hydraulic connection and which holds a valve arrangement, a simpler design is obtained in that the valve arrangement has two valve bodies which are mounted in a floating fashion in the housing and which can be moved relative to one another counter to the force of a spring.

Claims (10)

1. A hydraulic element comprising: a housing having a master-cylinder-side hydraulic connection and a slave-cylinder-side hydraulic connection; accommodated in the housing, a valve arrangement, the valve arrangement having a first valve body and a second valve body, the first and second valve bodies being supported in a floating manner inside the housing and displaceable relative to one another against a force of a spring,

wherein the first valve body is an external valve and the second valve body is an internal valve, the external valve body comprising a cup-shaped valve cup supporting in a sliding manner a tube-shaped section of the internal valve body, whereby the valve cup and the tube-shaped section respectively have connection holes that can coincide with one another depending on a relative position of the external and internal valve bodies.

2. The hydraulic element as recited in claim 1 wherein the external valve body comprises a valve head having an axial hole and a radial hole connected with the axial hole.

3. The hydraulic element as recited in claim 1 wherein the external valve body and the internal valve body each comprise a component that prevents rotation of the external valve body and the internal valve body relative to one another.

4. The hydraulic element as recited in claim 3 wherein the component of the internal valve body is a finger and the component of the external valve body is an axial groove, the finger being guided in the axial groove.

5. The hydraulic element as recited in claim 1 wherein the internal valve body comprises a valve head which forms a valve seat with the housing in an axial end position of the valve body.

6. The hydraulic element as recited in claim 5 wherein the valve head of the internal valve body leaves a gap relative to a hollow-cylindrical section of the housing.

7. The hydraulic element as recited in claim 1 wherein the housing comprises a clutch assembly on one side.

8. A hydraulic clutch operation system with a master cylinder, a slave cylinder and a pressure line connecting the master cylinder and the slave cylinder, wherein the hydraulic element as recited in claim 1 is disposed in the pressure line.

9. The hydraulic element as recited in claim 1 wherein the hydraulic element is for the arrangement in a pressure line between a master cylinder and a slave cylinder of a hydraulic clutch operation system.

Assignments (7)
CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED ON REEL 037732 FRAME 0347. ASSIGNOR(S) HEREBY CONFIRMS THE APP. NO. 14/553248 SHOULD BE APP. NO. 14/553258. Recorded Oct 11, 2016
From: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
To: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Reel/Frame 040404/0530 →
MERGER AND CHANGE OF NAME Recorded Feb 5, 2016
From: SCHAEFFLER TECHNOLOGIES AG & CO. KG; SCHAEFFLER VERWALTUNGS 5 GMBH
To: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Reel/Frame 037732/0228 →
CHANGE OF NAME Recorded Feb 5, 2016
From: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
To: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Reel/Frame 037732/0347 →
CHANGE OF NAME Recorded Mar 23, 2012
From: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
To: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Reel/Frame 027921/0346 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 1, 2011
From: LUK VERMOEGENSVERWALTUNGS MBH
To: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Reel/Frame 027155/0927 →
MERGER Recorded Sep 19, 2011
From: LUK LAMELLEN UND KUPPLUNGSBAU BETEILIGUNGS KG
To: LUK VERMOEGENSVERWALTUNGSGESELLSCHAFT MBH
Reel/Frame 026930/0314 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 16, 2010
From: RAMMHOFER, THOMAS; GRABENSTAETTER, JAN
To: LUK LAMELLEN UND KUPPLUNGSBAU BETEILIGUNGS KG
Reel/Frame 024545/0592 →