EP 0757592 A1 19970212 - IMPROVED PRECOMPRESSION PUMP
Title (en)
IMPROVED PRECOMPRESSION PUMP
Title (de)
PUMPE MIT VORDRUCKAUFBAU
Title (fr)
POMPE A PRECOMPRESSION PERFECTIONNEE
Publication
Application
Priority
- FR 9500496 W 19950414
- FR 9405112 A 19940427
Abstract (en)
[origin: US5803318A] PCT No. PCT/FR95/00496 Sec. 371 Date Oct. 28, 1996 Sec. 102(e) Date Oct. 28, 1996 PCT Filed Apr. 14, 1995 PCT Pub. No. WO95/29016 PCT Pub. Date Nov. 2, 1995A precompression pump has a hollow cylindrical pump body 1 extending axially between a first end 1a and a second end 1c, an annular piston 3 sliding axially in the pump body, the piston and the pump body defining a pump chamber 6, and a push rod 40 for controlling the piston and sliding axially inside it. The push rod includes an outlet channel 41a, 42a which opens out inside the pump body via a lateral opening 42b, and the piston is displaceable relative to the push rod to close the lateral opening or to put it into communication with the pump chamber. A resilient precompression spring 47 urges the piston towards the pump chamber and towards a rest position in which it closes the lateral opening of the outlet channel, and a central section of the piston is isolated from the pump chamber, at least while the piston is in the rest position.
IPC 1-7
IPC 8 full level
B05B 11/00 (2006.01)
CPC (source: EP US)
B05B 11/0008 (2013.01 - EP US); B05B 11/1025 (2023.01 - EP US); B05B 11/1047 (2023.01 - EP US)
Citation (search report)
See references of WO 9529016A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
US 5803318 A 19980908; DE 69503369 D1 19980813; DE 69503369 T2 19990408; EP 0757592 A1 19970212; EP 0757592 B1 19980708; ES 2120747 T3 19981101; FR 2719242 A1 19951103; FR 2719242 B1 19960712; JP 3661062 B2 20050615; JP H09512208 A 19971209; WO 9529016 A1 19951102
DOCDB simple family (application)
US 73233096 A 19961028; DE 69503369 T 19950414; EP 95917405 A 19950414; ES 95917405 T 19950414; FR 9405112 A 19940427; FR 9500496 W 19950414; JP 52739395 A 19950414