US2002023893A1PendingUtilityA1

Closure for vial

45
Priority: Aug 25, 2000Filed: Aug 17, 2001Published: Feb 28, 2002
Est. expiryAug 25, 2020(expired)· nominal 20-yr term from priority
Inventors:Morihiro SudoKouichi Asai
B65D 39/16B65D 39/0023B01L 3/50825
45
PatentIndex Score
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Cited by
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Claims

Abstract

A closure for a vial includes a head portion, and a stem portion which projects from a lower surface of the head portion, the stem portion being inserted in an opening of a vial; wherein the stem portion is provided with a small diameter portion and a seal portion, in that order from the lower surface the head portion, the diameter of the small diameter portion being smaller than the diameter of the seal portion. The entirety of the small diameter portion and the seal portion are substantially uniformly fitted in the opening of the vial.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A closure for a vial comprising: 
 a head portion; and    a stem portion which projects from a lower surface of the head portion, said stem portion being inserted in an opening of a vial;    wherein said stem portion is provided with a small diameter portion and a seal portion, in that order from said lower surface the head portion, the diameter of said small diameter portion being smaller than the diameter of the seal portion;    and wherein the entirety of said small diameter portion and said seal portion are substantially uniformly fitted in the opening of the vial.    
     
     
         2 . The closure for a vial according to  claim 1 , wherein the following condition is satisfied:  
       0.80D≦d≦0.98D;  wherein    d designates the diameter of the small diameter portion; and    D designates the diameter of the seal portion.    
     
     
         3 . The closure for a vial according to  claim 1 , wherein the stem portion is further provided with a leg portion connected to the seal portion, said leg portion being provided with at least one radial opening and a plurality of half-insertion projections formed on the outer peripheral surface of the seal portion, the diameter of the seal portion being smaller than the diameter of a circumscribed circle of the half-insertion projections.  
     
     
         4 . The closure for a vial according to  claim 1 , wherein the following condition is satisfied:  
       S/5≧j≧S/20;  wherein    j designates the axial length of the small diameter portion; and    S designates the axial length of the seal portion.

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