EP 0953764 B1 20040929 - Volumetric pump
Title (en)
Volumetric pump
Title (de)
Volumetrische Pumpe
Title (fr)
Pompe volumétrique
Publication
Application
Priority
IT BO980263 A 19980427
Abstract (en)
[origin: EP0953764A1] Volumetric pump (1) in which a piston (6) is located to slide axially within a seat (3) formed in a valve body (2); the piston (6) defining within the seat (3) a variable volume pumping chamber (8), and the axial ends of the said seat (3) being connected to atmosphere by means of a supply duct (4) and an intake duct (5); the volumetric pump (1) comprises also an intake valve (13) and a discharge valve (14) to regulate respectively the incoming fluid supply and the outgoing fluid supply for the said pumping chamber (8), and an opposing retaining spring (10) to keep the piston (6) in the resting position whereby the pumping chamber volume (8) is minimised, and finally when an electrical current passes through it, a coil able to produce a magnetic field able to induce an axial movement of the piston (6) within the seat (3) to achieve an increase in volume of the said pumping chamber (8); the intake valve (13) being accommodated inside the pumping chamber (8). <IMAGE>
IPC 1-7
IPC 8 full level
F04B 17/04 (2006.01)
CPC (source: EP)
F04B 17/046 (2013.01); F01M 2001/0223 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0953764 A1 19991103; EP 0953764 B1 20040929; DE 69920566 D1 20041104; DE 69920566 T2 20051208; ES 2229574 T3 20050416; IT 1299987 B1 20000404; IT BO980263 A0 19980427; IT BO980263 A1 19991027
DOCDB simple family (application)
EP 99107763 A 19990419; DE 69920566 T 19990419; ES 99107763 T 19990419; IT BO980263 A 19980427