F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
285/53
F16L 19/08 (2006.01) F16J 15/08 (2006.01) F16L 19/02 (2006.01)
Patent
CA 2029311
A union joint capable of perfectly hermetically connecing pipes so that a gas passing the pipes never leaks from the junction of the pipes even if the pressure of the gas is as high as 150 kg/cm2. The union joint comprises a first sleeve (10) hermetically joined to a pipe (1), a second sleeve (20) hermetically joined to another pipe (2) to be connected to the pipe joined to the first sleeve (10), one or a plurality of metallic gaskets (30) placed between the respective sealing surfaces (15; 25) of the first and second sleeves (10; 20) so as to be compressed between the sealing surfaces (15; 25) of the first and second sleeves (10; 20) when the first and second sleeves (10; 20) are drawn axially toward each other, a coupling nut (5) for drawing the first and second sleeves (10; 20) axially toward each other, and a thrust bearing (8) interposed between the first sleeve (10) and the coupling nut (5) to allow the coupling nut (5) to be rotated relative to the first sleeve (10). One of a plurality of annular grooves are formed at least in either the sealing surface (15) of the first sleeve (10) or the sealing surface (25) of the second sleeve (20) to receive the coresponding metallic gaskets (30). When compressed between the sealing surfaces (15; 25), the metallic gasket (30) is deformed in an elliptic cross section so that the metallic gasket (30) and the bottom surface of the corresponding annular groove are in close contact with each other in a large contact area.
Marks & Clerk
Sanko Kogyo Kabushiki Kaisha
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