US 11,719,368 B2
Coupling assembly for pipe connection and method of manufacturing the same
Sang Heon Lee, Seoul (KR); and Dong Il Han, Yeoju-si (KR)
Assigned to NEW ASIAJOINT CO., LTD, Yeoju-si (KR)
Filed by NEW ASIAJOINT CO., LTD., Yeoju-si (KR)
Filed on Apr. 16, 2020, as Appl. No. 16/850,815.
Prior Publication US 2021/0324981 A1, Oct. 21, 2021
Int. Cl. F16L 23/08 (2006.01)
CPC F16L 23/08 (2013.01) 6 Claims
OG exemplary drawing
 
1. A coupling assembly for pipe connection, which is configured so that two or more couplers are disposed to face each other to connect pipes consecutively disposed in an axial direction and the pipes are connected while a fastening member is preassembled to the plurality of couplers, the coupling assembly comprising a locking part formed in the coupler and inserted into a fastening groove formed in the pipe,
wherein a portion of the locking part is inserted into the fastening groove, and a remaining portion of the locking part is disposed outside the fastening groove,
wherein fastening parts to which a plurality of fastening members are connected by passing through the fastening parts are formed on both sides of the coupler, and
an angle between the fastening parts in pairs before fastening of the couplers may be maintained to be the same as that after fastening of the couplers,
wherein an arch-shaped surface that faces an outer circumferential surface of the fastening groove is formed in the locking part,
a portion of the arch-shaped surface is seated and supported on the outer circumferential surface of the fastening groove, and
a remaining portion of the arch-shaped surface is disposed to be spaced apart from the outer circumferential surface of the fastening groove,
wherein minimum locking points are formed on both sides of the locking part such that an insertion depth of the locking part is equal to half of a depth of the fastening groove, and
wherein the minimum locking points are formed in a range of 0° to 41° along both sides of the arch-shaped surface.