Invention Grant
- Patent Title: Flareless-type pipe fitting, refrigerating device, and water-heating device
- Patent Title (中): 防爆型管件,制冷装置,加热装置
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Application No.: US12523153Application Date: 2008-02-28
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Publication No.: US07988206B2Publication Date: 2011-08-02
- Inventor: Haruo Nakata , Akira Hashimoto , Seiji Chazono , Yoshiki Murayama
- Applicant: Haruo Nakata , Akira Hashimoto , Seiji Chazono , Yoshiki Murayama
- Applicant Address: JP Osaka-shi
- Assignee: Daikin Industries, Ltd.
- Current Assignee: Daikin Industries, Ltd.
- Current Assignee Address: JP Osaka-shi
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2007-071056 20070319
- International Application: PCT/JP2008/053477 WO 20080228
- International Announcement: WO2008/114590 WO 20080925
- Main IPC: F16L19/08
- IPC: F16L19/08

Abstract:
In a flareless-type pipe joint, a pressing surface, which presses a rear end portion of a ferrule in the axial direction and toward the inner periphery of the ferrule, is formed in a joint body or a coupling member in which a cam surface is not formed. The ferrule has a groove that extends radially outward from the inner periphery. By pressing the rear end portion in the axial direction and toward the inner periphery by the pressing surface, the distal portion of the ferrule is pressed against the cam surface and an edge portion of the distal portion is deformed to bite into a pipe. An edge portion of a rear end portion of the inner peripheral surface of the ferrule is deformed to bite into the pipe.
Public/Granted literature
- US20100090457A1 FLARELESS-TYPE PIPE FITTING, REFRIGERATING DEVICE, AND WATER-HEATING DEVICE Public/Granted day:2010-04-15
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