Title:
FLUID DISCHARGING UNIT
Document Type and Number:
Japanese Patent JP3933434
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a fluid discharging unit having a discharging valve capable of surely discharging fluid contained in a sealingly-closed space formed by a guide shaft, valve plunger, cylinder and piston irrespective of type of fluid to be discharged and further having a simple structure of which machining can be easily carried out.
SOLUTION: A one-finger push type pump 1 comprises a valve plunger 130 for use in sucking fluid into a cylinder 120, hollow guide 140 slidably held, slidable piston 150 and discharging valve for use in discharging fluid. This discharging valve has a groove 131 extending along an axial direction of the valve plunger 130 at an outer circumference 130f of the valve plunger 130 near the lower-most point when the hollow guide 140 slides. Fluid kept in a sealingly- closed space R1 is discharged out of a clearance ΔCa generated under a state in which the inner circumference of the hollow guide 140 bridges the groove 131.
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Inventors:
Kazuhito Kuwahara
Toru Toma
Takayuki Goto
Toru Toma
Takayuki Goto
Application Number:
JP2001319465A
Publication Date:
June 20, 2007
Filing Date:
October 17, 2001
Export Citation:
Assignee:
Yoshino Industry Co., Ltd.
International Classes:
B65D83/76; B05B11/00; B65D47/34; F04B9/14; F04B53/10; (IPC1-7): B65D83/76; B05B11/00; B65D47/34; F04B9/14; F04B53/10
Domestic Patent References:
| JP9173921A | ||||
| JP53140111U | ||||
| JP9210234A | ||||
| JP2001179140A |
Attorney, Agent or Firm:
Kenji Sugimura
Tatsuya Sawada
Kosaku Sugimura
Tatsuya Sawada
Kosaku Sugimura