EP 0346167 A1 19891213 - Spray pump, which produces pressure before spraying.
Title (en)
Spray pump, which produces pressure before spraying.
Title (de)
Zerstäubungspumpe, die einen Vordruck vor der Zerstäubung erzeugt.
Title (fr)
Pompe à précompression pour la diffusion d'un liquide.
Publication
Application
Priority
FR 8806287 A 19880510
Abstract (en)
The present invention relates to a precompression pump for spraying a liquid, comprising a first inner compression chamber (35) arranged inside a pump body between a valve (21) for closing an orifice (20) for drawing off the liquid in a reservoir bottle, and an orifice (16) for expelling the drawn-off liquid towards a spraying head (11); this chamber being of a volume which can vary by virtue of the fact that it is limited by a working piston (31) carried by a member which can move axially in the said pump body, characterised in that it comprises a second intermediate chamber (37) between the said first chamber (35) and the said expulsion orifice (16), and a precompression system comprising a needle piston (24) mounted inside the said moveable member but outside the said first chamber (35), and elastic means for stressing the said needle piston (24) towards a position blocking the expulsion orifice (16) from which the said needle piston (24) is freed when the liquid is pressurised in the said intermediate chamber (37), and in that the said second chamber (37) has communicating channels arranged longitudinally and distributed annularly in the said moveable member and opening out laterally around the said needle piston (24) in the vicinity of the said expulsion orifice (16). <IMAGE>
IPC 1-7
IPC 8 full level
B05B 11/00 (2006.01)
CPC (source: EP)
B05B 11/0044 (2018.07); B05B 11/1088 (2023.01)
Citation (search report)
- [X] EP 0127449 B1 19870826
- [A] FR 2133259 A5 19721124 - STEP
Designated contracting state (EPC)
AT BE CH DE ES GB IT LI NL SE
DOCDB simple family (publication)
EP 0346167 A1 19891213; EP 0346167 B1 19940817; AT E110010 T1 19940915; DE 68917531 D1 19940922; DE 68917531 T2 19950323; FR 2631393 A1 19891117; FR 2631393 B1 19930917
DOCDB simple family (application)
EP 89401284 A 19890509; AT 89401284 T 19890509; DE 68917531 T 19890509; FR 8806287 A 19880510