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:
Jun. 17, 2003
Filed:
Dec. 11, 2000
Takahiro Wakayama, Ibaraki-ken, JP;
Takeshi Hirohira, Ibaraki-ken, JP;
Riso Kagaku Corporation, Tokyo, JP;
Abstract
A variable volume container includes a cylindrical main body having an end wall at an end thereof; an outlet projecting from an outer surface of said end wall for allowing a content to be supplied; a piston member fitted into said main body sealingly and slidably in an axial direction of said main body for defining a variable volume storage chamber between itself and said end wall; a plug member detachably mounted to said outlet; and an impact resisting reinforcement disposed at said end wall. The reinforcement may be a part of said end wall having a thickness gradually increased toward said outlet, or may be a rib shaped projection. Such a variable volume container placed upside down in packaging or transport is reinforced at the end wall of the main body where the outlet is disposed. Thus, impact is not concentrated at the root portion of the outlet but distributed, so that the outlet is prevented from being damaged, and the container is placed more stably.