The Sailor Pen Co., Ltd.

Isao Shimada

Ichiro Morimoto

Yasuhiro Masumoto

Kiyoto Shigematsu

Isao Inagaki

Eiji Hishinuma

A nozzle is formed on a distal end side of a cylinder The nozzle has an intermediate portion formed such that a tip is freely attachable thereto and detachable therefrom. The intermediate portion of the nozzle is formed with an annular projection for retaining the tip The tip has a thick portion provided in a root portion thereof and formed larger in diameter than a root portion of the nozzle to be abuttable against a tip releasing member Along an inner periphery of the root portion of the tip an annular projection is formed to contact with the annular projection of the nozzle thereby providing a seal with the nozzle Both the annular projections and of the nozzle and the tip are arranged to reach a position where a sound of abutment is produced between the root end surface of the tip and the shoulder of the nozzle at the completion of fitting of the tip onto the nozzle

Tip for pipette and pipette with the same

An inexpensive applicator in which the air within the inner barrel of a cap enters the fluid tank of the applicator to increase the internal pressure thereof in the process where the cap is engaged with the neck of the applicator, so that the fluid tank need not be pressed between the fingers for application of the fluid to be applied, the cap having in the inner barrel thereof a cylindrical valve member made of a highly flexible material and provided with a diaphragm or with a diaphragm having a ball-like portion formed thereon, and the application member being designed to be retracted and spaced from the caulked front edge of the tip when the application member is abutted against the diaphragm or the ball-like portion of the valve member in the process where the cap is engaged with the body of the applicator, whereas the elastically deformed diaphragm or the ball-like portion of the valve member is designed to close the front end opening of the tip when the cap is fully engaged with the neck.

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Tokyo, Japan

Isao Shimada