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. 02, 2003
Filed:
Sep. 27, 2000
Takeya Sasa, Tokyo, JP;
Yoshikazu Ozaki, Tokyo, JP;
Nitto Kohki Co., Ltd., Tokyo, JP;
Abstract
This invention provides a pipe coupling used for changing oil in an engine oil pan with an oil drain port. A drain plug has a drain plug main body having one end to be attached to the oil drain port of the engine oil pan, a recess formed in its outer surface of the other end projecting outward from the oil pan, and an axial oil flow path extending in an axial direction, a valve holder to be arranged in the plug main body, and a valve body held by the valve holder and capable of closing the flow path. A socket connectable to the drain plug has a socket main body to be mounted on the drain plug, a seal member for engaging with the valve holder in a fluid tight manner when the socket main body is mounted on the other end of the drain plug, a plurality of locking members which can engage with the plug main body when one end of the socket main body is mounted on the other end of the drain plug, and a slide sleeve mounted on the outer surface of the socket main body and capable of holding the locking member in an engaging state. The valve body opens the oil flow path when one end of the socket main body is mounted on the other end of the drain plug.