EP 0361260 A3 19900801 - PISTON PUMP FOR DOSING FLOWABLE SUBSTANCES
Title (en)
PISTON PUMP FOR DOSING FLOWABLE SUBSTANCES
Publication
Application
Priority
DE 8811811 U 19880917
Abstract (en)
[origin: EP0361260A2] A piston pump for dosing flowable substances, for example disinfectant, liquid soaps or creams, has a permanently spring-loaded piston (1) which has a radial groove (2) in which an axially displaceable annular valve element (3) is arranged. In the rest position of the piston (1), the annular valve element (3) is pressed with the aid of the return spring (15) against a circumferential stop ring (6) arranged in the cylinder. By virtue of this arrangement, fluid-tight sealing of the pump is achieved, thus preventing afterdribble in an effective way. <IMAGE>
IPC 1-7
IPC 8 full level
A47K 5/12 (2006.01); B05B 11/00 (2006.01); B65D 47/34 (2006.01); B67D 5/02 (2006.01); B67D 7/02 (2010.01); F04B 9/14 (2006.01); F04B 13/00 (2006.01)
CPC (source: EP)
B05B 11/1023 (2023.01); B67D 7/0205 (2013.01)
Citation (search report)
- [X] US 3500760 A 19700317 - SCHLENKER ROY F
- [X] US 3257961 A 19660628 - SCHLENKER ROY F
- [X] US 3187960 A 19650608 - GORMAN WILLIAM G
- [A] GB 1527224 A 19781004 - METAL BOX CO LTD
- [Y] FR 2606643 A1 19880520 - CONGIO GERARD [FR], et al
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0361260 A2 19900404; EP 0361260 A3 19900801; EP 0361260 B1 19940427; AT E104837 T1 19940515; DE 58907565 D1 19940601; DE 8811811 U1 19881027
DOCDB simple family (application)
EP 89117225 A 19890918; AT 89117225 T 19890918; DE 58907565 T 19890918; DE 8811811 U 19880917