Global Patent Index - EP 1319832 A2

EP 1319832 A2 2003-06-18 - Electromagnetically operated pump

Title (en)

Electromagnetically operated pump

Title (de)

Elektromagnetische Pumpe

Title (fr)

Pompe électromagnétique

Publication

EP 1319832 A2 (EN)

Application

EP 02102744 A

Priority

IT MI20012647 A

Abstract (en)

An electromagnetically operated pump to feed two-stroke internal-combustion engines with precise and controlled amounts of oil comprises, in a casing (1): a cylinder (2); a piston element (3) with a through pipe (4), axially movable in said cylinder (2); an electromagnetic coil (11) coaxial to the cylinder (2), to control the movements of the piston element (3) against the action of spring means (15, 16, 17, 18); a pumping chamber (8) for the oil to be fed, coaxial to the cylinder (2) and close to a first base (7) thereof; and valve means (19, 20) housed in said casing (1) and in said chamber (8), one of said means (19) cooperating with said piston element (3). According to the invention, said electromagnetic coil (11) is an annular coil which surrounds the piston element (3) and acts frontwards onto a keeper (14) of ferromagnetic material, close and parallel to the second base (9) of the cylinder (2) and connected to the second end (12) of the piston element (3), said annular coil (11) projecting from said second base (9) of the cylinder (2). <IMAGE>

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

F01M 1/02; F04B 17/04

IPC 8 full level (invention and additional information)

F04B 17/04 (2006.01)

CPC (invention and additional information)

F04B 17/046 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR

EPO simple patent family

EP 1319832 A2 20030618; EP 1319832 A3 20040121; EP 1319832 B1 20080409; AT 391837 T 20080415; DE 60225996 D1 20080521; IT MI20012647 A1 20030613

INPADOC legal status


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