专利名称：Plastic make syringe 发明人：伊東 茂
申请号：JP特願平5-146875
申请日：19930525
公开号：JP第2814339号B2
公开日：
19981022
专利内容由知识产权出版社提供
摘要：PURPOSE:To improve liquid tightness and to eliminate the need for asmbly by forming a syringe in such a manner that the outer peripheral edge of a liquid-tight plate comes into sliding contact with the inside surface of an outside cylinder made of plastic while making elastic deformation to liquid-tightly shield the inside and outside of this outside cylinder when an inside cylinder made of plastic is fitted into the outside cylinder. CONSTITUTION:The inside cylinder 2 made of the plastic, such as polypropylene, is fitted into the outside cylinder 1 which is similarly made of the plastic and has a nozzle N at its front end, by which the inside and the outside of the outside cylinder 1 are partitioned. The inside cylinder 2 is provided with a plunger 3 at its rear end as a means for sliding the inside cylinder 2 within the outside cylinder 1. A substrate 5 which makes sliding contact with the inside surface of the outside cylinder 1 without entailing plastic deformation and the liquid-tight plate 4 which makes sliding contact liquid-tightly therewith without elastic deformation of the outer peripheral part are mounted at the inside cylinder 2. The liquid-tightness to the outside cylinder 1 is imparted to the inside cylinder 2 by the liquid-tight plate 4 and the liquid-tightness is also assured even at the time of sliding of the inside cylinder 2 by the plunger 3.
申请人：株式会社石川製作所，株式会社オプテック，日ケミ商事株式会社，八木 隆康
地址：栃木県佐野市大橋町1647番地，埼玉県入間郡三芳町大字藤久保37-16，東京都中央区京橋3丁
目2番4号，三重県四日市市大字羽津乙129
国籍：JP,JP,JP,JP
代理人：羽村 行弘
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