EP 0872252 A1 19981021 - Peristaltic pump
Title (en)
Peristaltic pump
Title (de)
Peristaltische Pumpe
Title (fr)
Pompe péristaltique
Publication
Application
Priority
IL 12069797 A 19970418
Abstract (en)
A peristaltic pump for propelling liquid through a flexible tube segment. The pump has a cam shaft which carries a plurality of cams each having a driving surface. The driving surfaces of adjacent cams sre spaced at an angle to each other about the cam shaft. The pump also has a plurality of cam followers which are each reciprocal in a common direction perpendicular to the axis of the cam shaft. Each cam follower has a cam surface riding on the driving surface of a cam and a tube engaging surface for engaging the flexible tube segment. At least one of the cam followers is a restriction cam follower of which the tube engaging surface engages the flexible tube segment for a longer period than that of the other cam followers. The pump also has a motor for rotating the cam shaft whereby the cams cause the cam followers to each engage and occlude the flexible tube segment to form a propagating depression wave in the flexible tube segment for propelling liquid. The restriction cam followers prevent back flow of the liquid. <IMAGE>
IPC 1-7
IPC 8 full level
F04B 43/08 (2006.01); F04B 49/10 (2006.01)
CPC (source: EP)
F04B 43/088 (2013.01); F04B 49/106 (2013.01); F04B 2201/1201 (2013.01); F04B 2201/12041 (2013.01); F04B 2205/503 (2013.01); F04B 2207/01 (2013.01)
Citation (search report)
- [X] EP 0526962 A1 19930210 - IMED CORP [US]
- [X] GB 2071222 A 19810916 - ANDROS INC
- [A] US 4869646 A 19890926 - GORDON MARK G [US], et al
- [A] EP 0214443 A1 19870318 - NIKKISO CO LTD [JP]
- [A] US 3726613 A 19730410 - VON CASIMIR W
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
EP 0872252 A1 19981021; EP 0872252 B1 20031022; AR 012468 A1 20001018; AT E252396 T1 20031115; DE 69725698 D1 20031127; DE 69725698 T2 20040722; IL 120697 A0 19970814; IL 120697 A 20030312; ZA 983206 B 19991018
DOCDB simple family (application)
EP 97202451 A 19970807; AR P980101793 A 19980417; AT 97202451 T 19970807; DE 69725698 T 19970807; IL 12069797 A 19970418; ZA 983206 A 19980416