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:
May. 29, 2012
Filed:
Oct. 28, 2010
Kazunori Aoki, Tokyo, JP;
Kazunori Aoki, Tokyo, JP;
Nitto Kohki Co., Ltd., Tokyo, JP;
Abstract
A pipe coupling capable of being safely connected and disconnected. The pipe coupling has a tubular housing (), a first locking member (), a pressing member (), a valve member (), and a second locking member () provided between the valve member () and the pressing member (). When the housing is communicated with a fluid source with the pressing member () placed in a standby position (FIGS.to), the second locking member is displaced by the valve member, which is displaced toward an open position by fluid pressure. In this process, the second locking member engages with the pressing member () before the valve member reaches the open position (FIG.), thereby preventing the valve member from reaching the open position and, at the same time, preventing the pressing member from being displaced to a pressing position. When the housing is communicated with the fluid source with the pressing member () placed in the pressing position (FIG.), the second locking member does not engage with the pressing member and allows the valve member to be displaced to the open position.