Global Patent Index - EP 0870723 A3

EP 0870723 A3 2000-05-03 - Hydraulic gripper with pressure limiting valve

Title (en)

Hydraulic gripper with pressure limiting valve

Title (de)

Hydraulikgreifer mit Druckbegrenzungsventil

Title (fr)

Grappin hydraulique avec soupape de limitation de pression

Publication

EP 0870723 A3 (DE)

Application

EP 98106326 A

Priority

DE 19715010 A

Abstract (en)

[origin: EP0870723A2] A pressure control valve (1) is integrated in the hydraulic cylinder (26) and is inaccessible from outside. The valve has a conical piston (15) with seating co-operating with the spring (10). When a pre-set oil pressure (P) is exceeded for the hydraulic oil, the conical piston or the ball is pressed against the spring. The oil then passes it through a front opening (24) in the inner housing enclosing the conical piston or the ball into a chamber (25) in the pressure control valve and escapes from it to a hole for discharging the oil.

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

B66C 3/16; F16K 17/04

IPC 8 full level (invention and additional information)

B66C 3/16 (2006.01); F15B 15/14 (2006.01)

CPC (invention and additional information)

B66C 3/16 (2013.01); F15B 15/1433 (2013.01); F15B 15/149 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0870723 A2 19981014; EP 0870723 A3 20000503; DE 19715010 A1 19981015; DE 19715010 B4 20041209

INPADOC legal status


2002-01-02 [18D] DEEMED TO BE WITHDRAWN

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- Effective date: 20001104

2001-01-10 [AKX] PAYMENT OF DESIGNATION FEES

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2001-01-10 [AXX] PAYMENT OF EXTENSION FEES

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2000-05-03 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-05-03 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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1998-10-14 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): AT BE CH DE DK FI FR IT LI NL SE

1998-10-14 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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- Free Format Text: AL;LT;LV;MK;RO;SI PAYMENT 980408