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. 25, 2020
Filed:
Mar. 16, 2017
Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;
Yoshikazu Masuyama, Kobe, JP;
Hiroaki Nakano, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, Hyogo, JP;
Abstract
A gasket () is used for a medical syringe (), and includes a main body () made of an elastic material and an inert resin film () provided on a surface of the main body (). The gasket () has a cylindrical shape, and includes a plurality of annular ribs () provided on an outer circumferential surface () thereof and each having a sliding contact portion () to be kept in sliding contact with an inner peripheral surface of a syringe barrel. The plurality of annular ribs are axially arranged from a distal end to a rear end of the gasket (). The sliding contact portion () of a distal annular rib () has a width that is 1 to 25% of axial length of the cylindrical gasket.