Global patent index - EP 1054155 A1

EP 1054155 A1 2000-11-22 - METHOD FOR PUMPING GAS-LIQUID MIXTURES AND PISTON PUMP

Title (en)

METHOD FOR PUMPING GAS-LIQUID MIXTURES AND PISTON PUMP

Title (de)

VERFAHREN ZUM PUMPEN VON FLÜSSIGKEITSMISCHUNGEN UND KOLBENPUMPE

Title (fr)

PROCEDE DE POMPAGE DE MELANGES DE GAZ ET DE LIQUIDES ET POMPE A PISTON

Publication

EP 1054155 A1 (EN)

Application

EP 99910888 A

Priority

  • RU 9900017 W
  • RU 98122022 A

Abstract (en)

Novelty in the invention is that during the intake stroke and the gas compression stroke a gas-liquid mixture is fed into the working chamber through a hydraulic channel from a zone at the outlet of the discharge valve of the working chamber. The hydraulic channel is made in a cut-off element of the discharge valve and is formed by means of a separator, filter, choke with adjustable hydraulic resistance and a bush with axial and radial holes. <IMAGE>

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

F04B 19/06

IPC 8 full level (invention and additional information)

F04B 19/06 (2006.01); F04B 23/06 (2006.01)

CPC (invention and additional information)

F04B 19/06 (2013.01)

Citation (search report)

See references of WO 0034654A1

Designated contracting state (EPC)

DE GB

EPO simple patent family

EP 1054155 A1 20001122; CN 1295651 A 20010516; RU 2155276 C1 20000827; WO 0034654 A1 20000615

INPADOC legal status

2003-03-05 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020801

2000-11-22 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000810

2000-11-22 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE GB