EP 1600642 B1 20081015 - HYDRAULIC DEVICE
Title (en)
HYDRAULIC DEVICE
Title (de)
HYDRAULIKVORRICHTUNG
Title (fr)
DISPOSITIF HYDRAULIQUE
Publication
Application
Priority
- JP 2004002660 W 20040303
- JP 2003056258 A 20030303
Abstract (en)
[origin: US2005175467A1] A fluid pressure apparatus is obtained whose installation position is not restricted. The fluid pressure apparatus is provided with a fluid pressure pump ( 1 ) driven by an electric motor ( 6 ) and rotatable in both directions. Both ports of the fluid pressure cylinder are respectively connected to both ports of a fluid pressure pump ( 1 ) through a pair of pipe lines. A sliding cavity ( 38 ) is formed between an outer cylinder ( 32 ) and the inner cylinder ( 34 ), and is divided into a preload chamber ( 50 ) and a tank chamber ( 18 ) by the piston ( 44 ) slidably inserted in the sliding cavity ( 38 ). The tank chamber ( 18 ) and the pair of pipe lines are connected through check valves respectively provided in directions so as to allow discharge from the tank chamber ( 18 ). The tank chamber ( 18 ) is preloaded with air pressure introduced into the preload chamber ( 60 ). In addition, a fluid pressure pump ( 1 ) is disposed in the inner cylinder ( 34 ). The fluid pressure pump ( 1 ) is a swash plate piston pump. The outer cylinder ( 32 ) and the inner cylinder ( 34 ) are arranged coaxially with the rotating shaft 42 of the electric motor ( 6 ). The outer cylinder ( 32 ) and the inner cylinder ( 34 ) are mounted on the electric motor ( 6 ).
IPC 8 full level
F04B 23/02 (2006.01); F15B 7/10 (2006.01); F15B 11/08 (2006.01); F15B 15/18 (2006.01)
CPC (source: EP KR US)
F04B 23/021 (2013.01 - EP US); F04B 23/026 (2013.01 - EP US); F15B 7/10 (2013.01 - EP US); F15B 11/08 (2013.01 - KR); F15B 15/18 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
US 2005175467 A1 20050811; DE 602004017135 D1 20081127; EP 1600642 A1 20051130; EP 1600642 A4 20070704; EP 1600642 B1 20081015; JP 2004263806 A 20040924; KR 20050105971 A 20051108; WO 2004079205 A1 20040916
DOCDB simple family (application)
US 52097105 A 20050111; DE 602004017135 T 20040303; EP 04716722 A 20040303; JP 2003056258 A 20030303; JP 2004002660 W 20040303; KR 20057001346 A 20050125