Global Patent Index - EP 1044329 A1

EP 1044329 A1 2000-10-18 - PUMP ACTUATED BY AN ELECTRODYNAMIC TRANSDUCER AND METHOD FOR MAKING SUCH A PUMP

Title (en)

PUMP ACTUATED BY AN ELECTRODYNAMIC TRANSDUCER AND METHOD FOR MAKING SUCH A PUMP

Title (de)

MITTELSELEKTRODYNAMISCHEM WANDLER ERREGTE PUMPE SOWIE VERFAHREN ZU IHRER HERSTELLUNG

Title (fr)

POMPE ACTIONNEE PAR UN TRANSDUCTEUR ELECTRODYNAMIQUE ET PROCEDE DE FABRICATION D'UNE TELLE POMPE

Publication

EP 1044329 A1 (FR)

Application

EP 98958292 A

Priority

  • FR 9802583 W
  • FR 9715445 A

Abstract (en)

[origin: FR2771782A1] The invention concerns a vacuum pump element with liquid discharge rate and pressure comprising means (21, 22) for forced circulation of the liquid by an electrodynamic transducer mobile in translation (40) consisting of a piston (41) engaged in an axial bore (13) of a fixed body (10), the latter comprising a magnetic circuit (30) with reduced air gap (34) and the mobile element comprising in particular an electric coil (43) fixed to at least a second part (41) to be controlled in reciprocating rectilinear displacement and engaged in the air gap so as to cause the mobile element to move in a reciprocating translation motion. The invention is characterised in that the mobile element (40) comprises a linking part (45) hydrodynamic in shape making the second part (41) integral with the coil (43).

IPC 1-7 (main, further and additional classification)

F04B 17/04; F02M 37/08; F02M 51/04; F02M 69/04; H02K 33/18

IPC 8 full level (invention and additional information)

F02M 37/08 (2006.01); F02M 51/04 (2006.01); F02M 69/04 (2006.01); F04B 17/04 (2006.01); F04B 53/14 (2006.01); H04R 31/00 (2006.01)

CPC (invention and additional information)

F04B 53/14 (2013.01); F02M 37/08 (2013.01); F02M 51/04 (2013.01); F02M 69/045 (2013.01); F04B 17/042 (2013.01); F04B 17/046 (2013.01); F05C 2225/00 (2013.01)

Citation (search report)

See references of WO 9928626A1

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

FR 2771782 A1 19990604; FR 2771782 B1 20000107; EP 1044329 A1 20001018; WO 9928626 A1 19990610

INPADOC legal status


2003-07-30 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030108

2002-03-27 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020212

2000-10-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000531

2000-10-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES FR GB IT