EP 0255791 B1 19891213 - DEVICE FOR INJECTING AN ADDITIONAL PRODUCT INTO A PRINCIPAL FLUID
Title (en)
DEVICE FOR INJECTING AN ADDITIONAL PRODUCT INTO A PRINCIPAL FLUID
Publication
Application
Priority
FR 8611122 A 19860731
Abstract (en)
[origin: US4756329A] The invention relates to a device for injecting a metered product into a main circulation of liquid, comprising a metering piston (28) coupled to a stepped piston (11) whose motion results from the pressure of the main fluid in a known manner. The piston (28) interacts with a metering cylinder (10) which is in permanent communication with the lower part of the liquid outlet chamber (8). The mixture of the products is thus confined to the outlet of the device, while no leakproof sliding of a component on contact with either of the liquid and product is necessary, and this eliminates the risks of abrasion of the seals due to deposits on the sliding component. In addition, since the inlet chamber (6) for the main liquid is annular, it permits a filter (33) to be easily installed.
IPC 1-7
IPC 8 full level
B01J 4/02 (2006.01); B01F 15/04 (2006.01); F04B 9/10 (2006.01); F04B 13/02 (2006.01); G05D 11/00 (2006.01)
CPC (source: EP US)
F04B 13/02 (2013.01 - EP US); Y10T 137/2516 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0255791 A1 19880210; EP 0255791 B1 19891213; AT E48678 T1 19891215; BR 8703931 A 19880405; CN 87105287 A 19880210; DE 3761161 D1 19900118; ES 2011814 B3 19900216; FR 2602282 A1 19880205; FR 2602282 B1 19880923; IL 83393 A0 19871231; JP S63100925 A 19880506; OA 08644 A 19881130; US 4756329 A 19880712
DOCDB simple family (application)
EP 87401716 A 19870723; AT 87401716 T 19870723; BR 8703931 A 19870730; CN 87105287 A 19870730; DE 3761161 T 19870723; ES 87401716 T 19870723; FR 8611122 A 19860731; IL 8339387 A 19870730; JP 18240987 A 19870723; OA 59174 A 19870728; US 8039087 A 19870728