US2023313919A1PendingUtilityA1

Fitting device for making connection tube

65
Individually held — no corporate assignee on recordPriority: Apr 6, 2018Filed: Jun 8, 2023Published: Oct 5, 2023
Est. expiryApr 6, 2038(~11.7 yrs left)· nominal 20-yr term from priority
Inventors:Jae Gon KimByong Hwan Shin
F16L 15/008F16L 19/00F16L 15/007F16L 15/08F16L 19/086F16L 33/24F16L 19/10F16L 19/08F16L 19/12F16L 33/32F16L 19/061F16L 19/07F16L 37/08
65
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Claims

Abstract

A pipe-fitting device according to the present invention includes a fitting body and a flare packing. The fitting body has a first end portion with an inner threaded portion, a second end portion, and a narrowest portion between the first end portion of the fitting body and the second end portion of the fitting body. The flare packing has a double plane surface having different inclination angles and is provided inside a cavity of the first end portion of the fitting body.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A pipe-fitting device comprising:
 a fitting body comprising a first end portion comprising an inner threaded portion, a second end portion, and a narrowest portion between the first end portion of the fitting body and the second end portion of the fitting body; and   a flare packing provided inside a cavity of the first end portion of the fitting body and comprising a double plane surface having different inclination angles.   
     
     
         2 . The pipe-fitting device of  claim 1 , wherein the second end portion of the fitting body comprises an outer threaded portion, the pipe-fitting device further comprising a fixing nut comprising a first end portion configured to rotatably couple to the outer threaded portion of the second end portion of the fitting body, and a second end portion of the fixing nut comprising an inner circumference that is narrower than an inner circumference of the first end portion of the fixing nut. 
     
     
         3 . The pipe-fitting device of  claim 2 , further comprising a fixing nut packing placed inside the fixing nut, the fixing nut packing for preventing movement of the fixing nut, when a pipe has been inserted into the fitting body through the second end of the fixing nut, by pressing against the pipe. 
     
     
         4 . The pipe-fitting device of  claim 3 , further comprising a collet provided inside the fixing nut abutting the fixing nut packing, wherein the second end portion of the fitting body further comprises an inner inclined surface that narrows from the second end of the fitting body such that the collet presses inward against the pipe when the fixing nut is rotated and tightened. 
     
     
         5 . The pipe-fitting device of  claim 4 , wherein an adhesive tape is taped over outer circumferential surfaces of the fitting body and the fixing nut to prevent rotation of the fixing nut and to maintain a predetermined distance between the fitting body and the fixing nut. 
     
     
         6 . The pipe-fitting device of  claim 1 , further comprising a fitting body packing provided at a depth inside the second end portion of the fitting body.

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