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. 30, 2014
Filed:
Jan. 15, 2010
Haruo Nakata, Sakai, JP;
Takashi Shimamura, Sakai, JP;
Haruo Nakata, Sakai, JP;
Takashi Shimamura, Sakai, JP;
Daikin Industries, Ltd., Osaka-shi, JP;
Abstract
A bite-in type pipe connection structure is provided, the pipe connection structure being capable of, even if piping connection work is performed with a length of piping inserted insufficiently, minimizing deterioration of air-tightness at the joint portion, at which the piping is connected, due to an offset load acting on the piping. Also provided are a valve, a bite-in type pipe joint, and a refrigeration device using the bite-in type pipe connection structure. A ferrule is provided with: a low-strength portion which, when a coupling member becomes fastened to a joint body by manually rotating the coupling member, allows the distal end portion of the ferrule to deform so that the distal end portion restrains a length of piping which is to be connected; a level changing portion which connects a front tapered surface, which corresponds to the low-strength portion, and a rear tapered surface; and a rearward portion which is adjacent to the low-strength section. The level changing portion is formed so that the wall thickness of the rearward portion has a value which can airtightly retain the piping to be connected.