The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2017
Filed:
Jul. 31, 2006
Shigeki Tanaka, Osaka, JP;
Masanobu Iwasa, Osaka, JP;
Ryohei Namba, Hachi oji, JP;
Hidero Kato, Osaka, JP;
Teruhisa Hirobe, Osaka, JP;
Shigeki Tanaka, Osaka, JP;
Masanobu Iwasa, Osaka, JP;
Ryohei Namba, Hachi oji, JP;
Hidero Kato, Osaka, JP;
Teruhisa Hirobe, Osaka, JP;
NIPRO CORPORATION, Osaka, JP;
Abstract
A plunger for a syringe, in which a plunger rod can be prevented by a simple structure from unavoidably falling out of place. The plunger for a syringe includes the plunger rod and a gasket. The gasket is closed at its upper end and has an inner space, and an opening having a diameter smaller than the diameter of the inner space is provided in the lower end of the gasket. The plunger rod has a collar installed at the tip of the plunger rod. When the collar is positioned in the inner space of the gasket, the plunger rod and the gasket are freely movably fitted together without intimate contact between them.