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:
Dec. 20, 1994
Filed:
Jul. 14, 1993
Toru Takemura, Tokyo, JP;
Riso Kagaku Corporation, Tokyo, JP;
Abstract
In a container, which is required to prevent refilling for security and other reasons, and comprises a tubular container main body having one end thereof closed by an end wall, the end wall being provided with a content taking outlet, and a piston member slidably received in the container main body, defining a containing chamber between the piston member and the end wall, a cap member closing an opening provided in the piston member is detachably mounted on the piston member, and the container main body is provided with a cap engaging member which irreversibly engages with the cap member when the piston member has approached the end wall by more than a prescribed distance. As a result, when an attempt is made to refill the container, the content will escape from this opening, and such an attempt can be thereby effectively prevented. Alternatively, the container main body and the piston member may be provided with claws which engage with each other when the piston member has reached its stroke end so that any further movement of the piston member may be prohibited, and an attempt to refill the container may be prevented.