EP 0276665 B1 19910306 - PRESSURE-ACTIVATED DISPENSER FOR OPERAING TWIN CARTRIDGES
Title (en)
PRESSURE-ACTIVATED DISPENSER FOR OPERAING TWIN CARTRIDGES
Publication
Application
Priority
CH 25287 A 19870126
Abstract (en)
[origin: EP0276665A2] The conventional dispenser, designed in "pistol form", for twin cartridges (40) with a feed piston (42) has a pressure-activated cylinder/piston unit (1) with plungers (7) extending from the piston (5, 6) and intended for the advance of the feed piston. The problem is that, during the piston advance, the reaction forces acting on the two plungers (7) from the feed pistons (42) can differ greatly (different viscosities of the substances contained in the two cartridge cylinders 41 and/or different cross-sections of the cartridge cylinders 41). To prevent the piston (5, 6) from "tilting" or jamming, according to the invention there is in the cylinder space (14, 15) a rigid longitudinal guide (10) between the two cylinder bottoms (2, 4), on which the piston is supported slidably by means of an elongate guide bore (9). The longitudinal guide (10) can at the same time stiffen the cylinder (2, 3, 4) and, furthermore, guide the pressure medium into the pressure space (15) behind the piston (5, 6) via a longitudinal channel (20). In connection with this, a rapid venting (21 - 24) for the pressure space (15) and control means (31, 32) for the return of the piston unit (5, 6) together with plungers (7) to the initial position are described. Moreover, restoring means (38, 39) for the piston to relieve the plungers after each advance step and indicator members (60, 61) for the cartridge filling level are disclosed. <IMAGE>
IPC 1-7
IPC 8 full level
F15B 15/08 (2006.01); B01F 15/02 (2006.01); B05C 17/005 (2006.01); B05C 17/015 (2006.01); F15B 15/14 (2006.01); F15B 15/28 (2006.01)
CPC (source: EP US)
B05C 17/00553 (2013.01 - EP US); B05C 17/015 (2013.01 - EP US); B05C 17/014 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0276665 A2 19880803; EP 0276665 A3 19890830; EP 0276665 B1 19910306; CA 1338148 C 19960312; DE 3861858 D1 19910411; ES 2020583 B3 19910816; JP H0730762 B2 19950410; JP S63186014 A 19880801; US 4911328 A 19900327; US 5123568 A 19920623
DOCDB simple family (application)
EP 88100224 A 19880111; CA 557229 A 19880125; DE 3861858 T 19880111; ES 88100224 T 19880111; JP 1374188 A 19880126; US 14779888 A 19880125; US 43934889 A 19891120