EP 0064695 B1 19850619 - SPRAY PISTOL
Title (en)
SPRAY PISTOL
Publication
Application
Priority
DE 3118207 A 19810508
Abstract (en)
[origin: US4403738A] This invention relates to an improved sprayer means wherein the improvement comprises (a) a pressurized water feed, having a minimum pressure valve unit and leading to the mixing chamber of the nozzle spray head, which water feed is fed first to a water motor provided with a drive piston driven by the pressure of the inflowing water and then to a double-action metering pump having a metering piston coupled with said drive piston of the water motor, the cross-sectional area of the metering piston and the cross-sectional area of the drive piston being in a predetermined ratio; (b) a flexible container for chemicals residing in a detachable rigid vessel connected to a metering outlet line of the metering pump, said flexible container being connected by the mixing chamber of the nozzle spray head by a container outlet valve and a container line, the chemicals being displaced from the flexible container by water metered through the metering outlet line into the vessel; and (c) a feedback line leading from the cylinder of the metering pump to a pressure water connection valve that is capable of closing in the event of overpressure in the metering pump to shut off inflowing pressurized water.
IPC 1-7
IPC 8 full level
B05B 7/02 (2006.01); B05B 7/04 (2006.01); B05B 7/12 (2006.01); B05B 7/24 (2006.01); B05B 7/32 (2006.01); B05B 9/043 (2006.01)
CPC (source: EP US)
B05B 7/2445 (2013.01 - EP US); B05B 7/2478 (2013.01 - EP US); B05B 7/2481 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0064695 A2 19821117; EP 0064695 A3 19830427; EP 0064695 B1 19850619; AT E13820 T1 19850715; DE 3118207 A1 19821125; DE 3264254 D1 19850725; JP S5834059 A 19830228; US 4403738 A 19830913
DOCDB simple family (application)
EP 82103703 A 19820430; AT 82103703 T 19820430; DE 3118207 A 19810508; DE 3264254 T 19820430; JP 7553482 A 19820507; US 37329682 A 19820429