Global Patent Index - EP 0902194 B1

EP 0902194 B1 2002-11-13 - Load-holding valve

Title (en)

Load-holding valve

Title (de)

Lasthalteventil

Title (fr)

Soupape à maintien de charge

Publication

EP 0902194 B1 (DE)

Application

EP 98109115 A

Priority

DE 29716577 U

Abstract (en)

[origin: US5996466A] In a load holding valve L, comprising a check valve R and a pressure limiting valve D in a housing chamber which is common to said two valves, a seat insert 13 has provided therein a valve seat 19 for a closure member 4 of the pressure-limiting valve D and a sealing surface 15 for a check-valve closure member 16, and an opening piston 9, which is coupled to the closure member 4, is provided in a pilot chamber 10, an effective area of said closure member 4 being, in a direction opposite to the direction of spring loading, adapted to be acted upon by the pressure to be limited, the opening piston 9 is formed integrally with the closure member 4 and is provided with a pressure surface in the pilot chamber 10 which is slightly smaller than the cross-sectional area of the valve seat 19, and the valve seat 19 defines in combination with control passages K formed in the closure member 4 a stroke-dependent quantity control device M.

IPC 1-7 (main, further and additional classification)

F15B 13/01

IPC 8 full level (invention and additional information)

F15B 13/01 (2006.01); F15B 13/00 (2006.01)

CPC (invention and additional information)

F15B 11/003 (2013.01); F15B 13/01 (2013.01); F15B 2013/008 (2013.01); F15B 2211/50545 (2013.01); Y10T 137/2562 (2015.04); Y10T 137/778 (2015.04)

Designated contracting state (EPC)

DE ES FR GB IT NL SE

EPO simple patent family

DE 29716577 U1 19971113; EP 0902194 A1 19990317; EP 0902194 B1 20021113; ES 2186046 T3 20030501; US 5996466 A 19991207

INPADOC legal status


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- Owner name: HAWE HYDRAULIK GMBH & CO. KG

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