EP 0045928 A1 19820217 - Power transmission.
Title (en)
Power transmission.
Title (de)
Kraftübertragung.
Title (fr)
Transmission de puissance.
Publication
Application
Priority
US 17736980 A 19800811
Abstract (en)
A hydraulic system comprising a fixed displacement pump (10) driven by a prime mover operable at variable speeds and a flow control valve (18) operable to return a portion of the hydraulic fluid from the outlet of the pump (10) to the inle (17) of the pump (10) and draw fluid from a reservoir (14) to replenish the fluid at the inlet (17) when the pump (10) is operated at higher speeds. An auxiliary passage (26, 27) extends from the reservoir (14) and communicates with the inlet (17) of the pump (10) upstream from the system flow drawn from the reservoir (14) by the opening of the flow control valve (18) and normally isolated during low speed operation from the bypass flow (25) by the flow control valve (18, 21) thereby providing auxiliary flow to the inlet (17) at lower speeds.
IPC 1-7
IPC 8 full level
F04B 11/00 (2006.01); B62D 5/07 (2006.01); B62D 5/08 (2006.01); F04B 49/00 (2006.01); F04B 49/10 (2006.01); F04C 14/26 (2006.01); F15B 7/00 (2006.01); F15B 13/042 (2006.01)
CPC (source: EP)
F04C 14/26 (2013.01)
Citation (search report)
- US 3644065 A 19720222 - LETTENMAYER ROLF-DIETER, et al
- GB 2019940 A 19791107 - FORD MOTOR CO
- US 3253607 A 19660531 - DRUTCHAS GILBERT H
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0045928 A1 19820217; EP 0045928 B1 19851121; AU 545989 B2 19850808; AU 7185081 A 19820218; CA 1160538 A 19840117; DE 3172983 D1 19860102; IN 153744 B 19840818; JP H0138708 B2 19890816; JP S5752686 A 19820329
DOCDB simple family (application)
EP 81106075 A 19810804; AU 7185081 A 19810615; CA 379723 A 19810615; DE 3172983 T 19810804; IN 625CA1981 A 19810610; JP 10992381 A 19810714