EP 2249994 B1 20120627 - HYDRAULIC PRESSURE SUPPLY UNIT FOR A POWER SCREWDRIVER
Title (en)
HYDRAULIC PRESSURE SUPPLY UNIT FOR A POWER SCREWDRIVER
Title (de)
HYDRAULISCHE DRUCKLIEFEREINHEIT FÜR EINEN KRAFTSCHRAUBER
Title (fr)
UNITÉ DE PRODUCTION DE PRESSION HYDRAULIQUE POUR UNE VISSEUSE MÉCANIQUE
Publication
Application
Priority
- EP 2009052850 W 20090311
- DE 202008003500 U 20080312
Abstract (en)
[origin: WO2009112517A1] The pressure supply unit has a pressure generating assembly (10), which generates a supply pressure (PL) for the intermittent operation of a power screwdriver (11). So as to allow a tensioning cylinder unit (33) to be operated alternatively to the power screwdriver (11), which requires higher pressure, a pressure intensifier (30) is provided which is included in a separate module (31) and generates high pressure (PH) from the supply pressure (PL). The reversal of the pressure intensifier (30) for carrying out strokes is achieved by the same stroke switch valve (20) which otherwise performs the reversal of the power screwdriver (11).
IPC 8 full level
F15B 11/032 (2006.01); B25B 21/00 (2006.01); B25B 29/02 (2006.01); F15B 3/00 (2006.01)
CPC (source: EP US)
B25B 21/005 (2013.01 - EP US); B25B 29/02 (2013.01 - EP US); F15B 11/032 (2013.01 - EP US); F15B 2211/21 (2013.01 - EP US); F15B 2211/251 (2013.01 - EP US); F15B 2211/3052 (2013.01 - EP US); F15B 2211/30525 (2013.01 - EP US); F15B 2211/30565 (2013.01 - EP US); F15B 2211/3138 (2013.01 - EP US); F15B 2211/3157 (2013.01 - EP US); F15B 2211/7053 (2013.01 - EP US); F15B 2211/76 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 202008003500 U1 20090730; DK 2249994 T3 20120827; EP 2249994 A1 20101117; EP 2249994 B1 20120627; ES 2388991 T3 20121022; PL 2249994 T3 20121231; US 2011005221 A1 20110113; US 8667789 B2 20140311; WO 2009112517 A1 20090917
DOCDB simple family (application)
DE 202008003500 U 20080312; DK 09719703 T 20090311; EP 09719703 A 20090311; EP 2009052850 W 20090311; ES 09719703 T 20090311; PL 09719703 T 20090311; US 92230909 A 20090311