Patent ID: 7490867
Filing Date: 2009-02-17
Classification: B21D,B21J,F16L

Abstract:
1. A tube connector for a pressure, tearout-resistant and positively-locking high-pressure screw union, the tube connector comprising: a deformed tube; a union member with a conical opening at a front face and an axially parallel bore with a radial end face defining a tube seat bottom; a union nut; a sealing ring; and a retaining ring; the deformed tube having an end portion of the same tube diameter at the union member bore which is axially parallel to the union member bore to the depth of the tube seat bottom, wherein the tube is deformed with a distinct torus, the torus forming an inclined locating surface which in an assembled condition is located against a conical surface of the union nut, and which transitions into a stop face directed radially towards a geometric axis of the tube at a right angle to the geometric axis, and in the assembled condition, directly against a radially extending front face of the retaining ring, which front face extends also at a right angle to the geometric axis, and wherein the retaining ring is provided with a radially extending rear ring surface which, in the assembled condition, makes contact with the front face of the union member, which also extends radially, and wherein the conical surface of the union nut extends up to a threaded bore, and the retaining ring, in the assembled condition, has a front conical ring surface that forms an annular gap with respect to the conical surface of the union nut, with the front ring surface of the retaining ring extending in parallel with the conical surface of the union nut, and wherein in the assembled condition, forces applied by the union nut through the mating surfaces of the union nut and the tube torus are applied primarily axially through the retaining ring to the union member.