Patent ID: 6572155
Filing Date: 2003-06-03
Classification: F16L

Abstract:
A tube fitting for providing a sealed flow connection between an open-ended duct of a tube having a ring flange at one end and an open-ended duct of a base element, comprising:a ring-shaped thrust piece that provides a receptacle for the tube; an elastic compensating element that provides a receptacle for the tube; and a fastening element that can be tightly fastened to a base body supporting the base element; wherein the ring flange abuts the base element; wherein, when sealed, the base element, the thrust piece, the compensating element and the tube are braced by means of the fastening element, whereby the compensating element is elastically deformed; wherein the compensating element comprises a spring having at least one perforated plate arranged rotationally symmetrical and having a spring deflection; wherein the spring and the braced parts being configured within a range of the spring deflection and are coordinated to each other such that a leaky connection caused by plastic deformation or material settling of parts braced together is excluded; wherein the thrust piece is arranged between the perforated plate and the base element; wherein the thrust piece is rotationally symmetrical and has side parts that taper radially outward; and wherein the thrust piece and the ring flange of the tube that protrudes radially outward and normally to the longitudinal axis of the tube are coordinated such that an extending gap is formed between the thrust piece and the ring flange when the thrust piece is put on the tube and fits closely on the ring flange when the fastening element is not braced relative to the base element.