EP 0112404 B1 19860604 - TWO CYLINDER VISCOUS LIQUID PUMP, ESPECIALLY A CONCRETE PUMP
Title (en)
TWO CYLINDER VISCOUS LIQUID PUMP, ESPECIALLY A CONCRETE PUMP
Publication
Application
Priority
EP 82111988 A 19821224
Abstract (en)
[origin: ES8501493A1] A twin cylinder pump for viscous materials such as concrete, having a guide for a cutting ring producing a sealing effect on the cylinder and a seat for supporting a loaded spring ring of elastic material of rubber or the like, is so designed that the ring is acted upon by the pressure of the feed taking effect in the ring-like gap, open as far as supporting face or seat of the spring, between the cutting ring and the valve member. Furthermore there is a guiding and constraining means for the ring taking effect thereon between the radial faces against which it is rested.
IPC 1-7
IPC 8 full level
F04B 53/16 (2006.01); F04B 15/02 (2006.01)
CPC (source: EP KR US)
B67D 7/645 (2013.01 - EP); F04B 15/02 (2013.01 - EP KR US); Y10S 417/90 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0112404 A1 19840704; EP 0112404 B1 19860604; AT E20270 T1 19860615; AU 2120083 A 19840628; AU 559378 B2 19870305; BR 8307113 A 19840807; CA 1215578 A 19861223; CS 259866 B2 19881115; CS 981083 A2 19880415; DD 220096 A5 19850320; DE 3271599 D1 19860710; ES 527623 A0 19841116; ES 8501493 A1 19841116; GR 78944 B 19841002; HU 186813 B 19850930; IL 70038 A 19880930; JP S59131778 A 19840728; KR 840007145 A 19841205; KR 900004615 B1 19900630; MX 159733 A 19890811; PL 142428 B1 19871031; PL 245306 A1 19840813; SG 23088 G 19880930; SU 1336952 A3 19870907; US 4556370 A 19851203; ZA 837967 B 19840627
DOCDB simple family (application)
EP 82111988 A 19821224; AT 82111988 T 19821224; AU 2120083 A 19831114; BR 8307113 A 19831223; CA 443100 A 19831212; CS 981083 A 19831222; DD 25835183 A 19831221; DE 3271599 T 19821224; ES 527623 A 19831129; GR 830172833 A 19831031; HU 382983 A 19831108; IL 7003883 A 19831024; JP 24313483 A 19831224; KR 830005930 A 19831214; MX 19979283 A 19831215; PL 24530683 A 19831223; SG 23088 A 19880405; SU 3679910 A 19831222; US 54898783 A 19831107; ZA 837967 A 19831026