EP 0983123 A1 20000308 - ARTICULATED PISTON PUMP
Title (en)
ARTICULATED PISTON PUMP
Title (de)
PUMPE MIT ANGELENKTEM KOLBEN
Title (fr)
POMPE A PISTON ARTICULE
Publication
Application
Priority
- FR 9801062 W 19980528
- FR 9706586 A 19970529
Abstract (en)
[origin: US6196424B1] The invention concerns a pump comprising a substantially cylindrical body (1) defining internally a metering chamber (11) whereof the lower end (1a) is provided with an intake orifice (10) equipped with a valve (12) and the upper end is provided with an outlet (20a) and closed by a piston (2) capable of moving in said chamber (11) by cooperating with elastic return means (4) outside the chamber (11), between a support up stop and a limit down stop. Said piston (2) comprises a central core (21) integral with the bottom end (23a) of a hollow axial rod (23) whereof the top end (23b) projects outside the metering chamber (11) and a coaxial sleeve (22), connected to said rod (23) by an elastic articulation (24) ensuring a sealed contact with the chamber (11) internal wall and defining with said core (21) a ring-shaped evacuating conduit (20) capable of being opened by displacement of said sleeve (22) with respect to the core (21), and the pump body (1) upper part being closed by a flange (3) whereof the internal surface forms the piston (2) up stop and the external surface serves as bottom support for the elastic return means (4). Said flange (3) is provided with an axial bore (30) wherein moves the hollow rod (23) integral with the piston. The invention is characterized in that said sleeve comprises a top ring (22b) designed to be urged into sealed engagement in a peripheral groove (31) arranged in said flange (3) internal surface.
IPC 1-7
IPC 8 full level
B65D 47/34 (2006.01); B05B 11/00 (2006.01)
CPC (source: EP US)
B05B 11/1026 (2023.01 - EP US); B05B 11/1074 (2023.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6196424 B1 20010306; AT E233606 T1 20030315; AU 8023098 A 19981230; BR 9809488 A 20000725; CA 2291093 A1 19981203; CA 2291093 C 20081118; CN 1107553 C 20030507; CN 1258236 A 20000628; DE 69811882 D1 20030410; DE 69811882 T2 20040318; DK 0983123 T3 20030714; EP 0983123 A1 20000308; EP 0983123 B1 20030305; ES 2194325 T3 20031116; FR 2764005 A1 19981204; FR 2764005 B1 20041210; HK 1027519 A1 20010223; JP 2002500559 A 20020108; PT 983123 E 20030731; WO 9853917 A1 19981203
DOCDB simple family (application)
US 42365799 A 19991122; AT 98928370 T 19980528; AU 8023098 A 19980528; BR 9809488 A 19980528; CA 2291093 A 19980528; CN 98805596 A 19980528; DE 69811882 T 19980528; DK 98928370 T 19980528; EP 98928370 A 19980528; ES 98928370 T 19980528; FR 9706586 A 19970529; FR 9801062 W 19980528; HK 00106749 A 20001024; JP 50033199 A 19980528; PT 98928370 T 19980528