EP 0766010 A3 19990506 - Hydraulic operated hand tool
Title (en)
Hydraulic operated hand tool
Title (de)
Hydraulisch angetriebenens Handwerkzeug
Title (fr)
Outil à main à commande hydraulique
Publication
Application
Priority
DE 19535691 A 19950926
Abstract (en)
[origin: DE19535691C1] A piston (21) is arranged in a piston chamber (19), and is returnable by spring force and a piston connecting rod (22). A hydraulic control block (9) is fitted to the piston chamber. In the control block is a control valve (30) for connection of the piston chamber with the tank chamber (24). The control valve, by activation of its pressure side (47), is hydraulically controllable in its opening position, and by a thruster (49) extending into the piston chamber is controllable by the piston mechanically in its closed position. A sensor valve (32), responding to a limit pressure, is provided for the hydraulic control of the control valve and a securing piston (11), with a thruster (12) provided for the securing device.
IPC 1-7
IPC 8 full level
B25F 5/00 (2006.01)
CPC (source: EP)
B25F 5/005 (2013.01)
Citation (search report)
- [A] US 4583388 A 19860422 - HOGENHOUT FRANCISCUS [US]
- [A] US 4594030 A 19860610 - WEIGEL JR MATTHEW J [US]
- [A] EP 0451543 A1 19911016 - ASEA BROWN BOVERI [CH]
- [A] US 5125324 A 19920630 - ARAKI MASAHARU [JP], et al
- [A] US 2729994 A 19560110 - HEWITT ELLIS E, et al
- [A] DE 2614796 A1 19761021 - SECRETARY INDUSTRY BRIT
- [A] GB 2171948 A 19860910 - COAL IND
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL
DOCDB simple family (publication)
DE 19535691 C1 19970123; EP 0766010 A2 19970402; EP 0766010 A3 19990506
DOCDB simple family (application)
DE 19535691 A 19950926; EP 96114779 A 19960916