EP 0421020 B1 19930908 - GEAR MACHINE FOR USE AS A PUMP OR MOTOR
Title (en)
GEAR MACHINE FOR USE AS A PUMP OR MOTOR
Publication
Application
Priority
EP 89118620 A 19891006
Abstract (en)
[origin: EP0421020A1] A gear machine (1) is described comprising a machine casing (2) closed by two covers (3 and 4) and within which two gear wheels (6) provided on respective shafts (7) supported by bushes (8) are in mutual engagement. The main characteristic of the present invention is that a compensation area for the axial thrusts to which a bush (8) is subjected is defined between an elastic diaphragm (5) installed between the bush (8) and a cover (3), so that because of the clearance between the gear wheels (6) and bushes (8) rapid starting is possible even under load, whereas as pressure increases a corresponding flexure of the diaphragm (5) towards the bushes (8) occurs, so as to gradually compensate said clearance while at the same time partially balancing said axial thrusts.
IPC 1-7
IPC 8 full level
F04C 15/00 (2006.01)
CPC (source: EP)
F04C 15/0026 (2013.01)
Designated contracting state (EPC)
DE ES FR GB
DOCDB simple family (publication)
EP 0421020 A1 19910410; EP 0421020 B1 19930908; DE 68909046 D1 19931014; DE 68909046 T2 19940331; ES 2061870 T3 19941216
DOCDB simple family (application)
EP 89118620 A 19891006; DE 68909046 T 19891006; ES 89118620 T 19891006