Global Patent Index - EP 0674105 A1

EP 0674105 A1 19950927 - Rotary vane pump.

Title (en)

Rotary vane pump.

Title (de)

Flügelzellenpumpe.

Title (fr)

Pompe rotative à palettes.

Publication

EP 0674105 A1 19950927 (EN)

Application

EP 95200457 A 19950223

Priority

GB 9405471 A 19940319

Abstract (en)

A rotary vane pump comprising a stator (10) having a cylindrical surface; a rotor (2) which is positioned relative to the stator to define a fluid chamber between the rotor and the stator, the rotor being rotatable about a longitudinal axis (L) and having a number of radially extending slots therein; a vane (11) slidably mounted in each slot and biased towards the fluid chamber and into engagement with the surface of the stator, the vanes reciprocating in their respective slots as the rotor rotates about the stator; a first fluid passage (36) providing fluid at a first pressure from a fluid inlet to the fluid chamber; a second fluid passage taking fluid at a second pressure higher than the first pressure from the fluid chamber to a fluid outlet; and a electrically operated valve (15) positioned adjacent the fluid chamber and fluidly connecting the first and second fluid passages on detection of a predetermined condition. Energy saving design. <IMAGE>

IPC 1-7

F04C 15/04; F04C 2/34

IPC 8 full level

F04C 2/34 (2006.01); F04C 2/356 (2006.01); F04C 14/06 (2006.01)

CPC (source: EP)

F04C 14/06 (2013.01); F04C 2270/054 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE ES FR IT

DOCDB simple family (publication)

EP 0674105 A1 19950927; EP 0674105 B1 19980520; DE 69502529 D1 19980625; DE 69502529 T2 19980910; ES 2116671 T3 19980716; GB 2287756 A 19950927; GB 2287756 B 19980408; GB 9405471 D0 19940504

DOCDB simple family (application)

EP 95200457 A 19950223; DE 69502529 T 19950223; ES 95200457 T 19950223; GB 9405471 A 19940319