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:
Feb. 25, 2003
Filed:
Aug. 10, 2001
Kazutami Ishiwata, Tokyo, JP;
Nitto Kohki Co., Ltd., Tokyo, JP;
Abstract
Provided is a coupling for fluid pipes, comprising a plug and a socket. The socket includes a socket body, a sleeve slidably fitted on the outer peripheral surface of the socket body and urged toward the distal end thereof, and a plurality of locking members provided on the socket body and capable of being engaged with and disengaged from an outer peripheral groove by means of the sleeve. The pipe coupling further comprises a pair of end faces provided individually on the plug and the socket and adapted to abut against each other when the plug and the socket are joined, and a shaped packing provided on one of the coupling end faces and adapted to prevent admission of external air when the coupling end faces abut against each other and to prevent the fluid from leaking out when the coupling end faces are separated from each other.