Title:
改良型予圧縮ポンプ
Document Type and Number:
Japanese Patent JP3661062
Kind Code:
B2
Abstract:
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.
Inventors:
Lina Jean-Pierre
Application Number:
JP52739395A
Publication Date:
June 15, 2005
Filing Date:
April 14, 1995
Export Citation:
Assignee:
Barois Society Anonymous
International Classes:
B05B11/00; (IPC1-7): B05B11/00
Domestic Patent References:
| JP58124565A | ||||
| JP50113803A | ||||
| JP50146919A | ||||
| JP4916366B1 |
Foreign References:
| WO1993013873A1 |
Attorney, Agent or Firm:
Katsuzo Asakura
Katsuzo Asakura
Katsuzo Asakura