EP 1580437 A1 20050928 - Hydraulic cylinder for use in a hydraulic tool
Title (en)
Hydraulic cylinder for use in a hydraulic tool
Title (de)
Hydraulikzylinder zur Verwendung in einem hydraulischen Werkzeug
Title (fr)
Vérin hydraulique pour outil hydraulique
Publication
Application
Priority
NL 1025806 A 20040325
Abstract (en)
The invention relates to a hydraulic cylinder, for use in a hydraulic tool, comprising a hollow cylinder body (8) accommodating a first piston, which first piston is composed of a hollow first piston rod (14), which extends from the cylinder body, and a first piston body (20) connected thereto, said cylinder body and said first piston body defining a first cylinder chamber (21) and said cylinder body, said first piston body and said first piston rod defining a second cylinder chamber (22), as well as a second piston accommodated in the hollow first piston rod, which second piston is composed of a second piston rod (26), which extends through the first piston body and which is connected to the cylinder body, and a second piston body (25) connected thereto, said first piston rod and said second piston body defining a third cylinder chamber (23) and said first piston rod, said second piston rod and said second piston body defining a fourth cylinder chamber (24), wherein the second piston rod is at least provided with a bore that terminates in the third cylinder chamber, and wherein the cylinder chambers can be connected to a first (P1) and a second supply line (P2), respectively, for extending and retracting the first piston rod.
IPC 1-7
IPC 8 full level
E02F 3/96 (2006.01); E02F 9/22 (2006.01); F15B 11/02 (2006.01); F15B 11/036 (2006.01); F15B 15/14 (2006.01)
CPC (source: EP)
E02F 3/965 (2013.01); E02F 9/2217 (2013.01); F15B 11/022 (2013.01); F15B 11/036 (2013.01); F15B 15/1466 (2013.01); F15B 15/149 (2013.01); F15B 2211/3052 (2013.01); F15B 2211/30525 (2013.01); F15B 2211/3116 (2013.01); F15B 2211/31576 (2013.01); F15B 2211/329 (2013.01); F15B 2211/625 (2013.01); F15B 2211/6355 (2013.01); F15B 2211/7055 (2013.01)
Citation (applicant)
DE 1021612 B 19571227 - RODI & WIENERBERGER AG
Citation (search report)
- [YD] DE 10121612 A1 20021107 - POHL BERT [DE], et al
- [YA] US 4833971 A 19890530 - KUBIK PHILIP A [US]
- [A] GB 893592 A 19620411 - ELECTRO HYDRAULICS LTD
- [A] US 5199658 A 19930406 - BARTELS ROBERT-JAN [US], et al
- [AD] EP 0641618 A1 19950308 - METHOLDS HERTOGENBOSCH BV [NL]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1580437 A1 20050928; EP 1580437 B1 20071212; AT E380940 T1 20071215; DE 602005003696 D1 20080124; DE 602005003696 T2 20081204; DK 1580437 T3 20080407; ES 2296060 T3 20080416; NL 1025806 C2 20050927; PL 1580437 T3 20080530
DOCDB simple family (application)
EP 05075591 A 20050310; AT 05075591 T 20050310; DE 602005003696 T 20050310; DK 05075591 T 20050310; ES 05075591 T 20050310; NL 1025806 A 20040325; PL 05075591 T 20050310