초록 ▼

A device for producing a pressure-tight pipe coupling with at least one pipe and comprises a bushing-type, rotationally symmetric base body. The base body is provided with at least one essentially cylindrical inner chamber, having toothed elements in order to receive the pipe end. The toothed elemen

A device for producing a pressure-tight pipe coupling with at least one pipe and comprises a bushing-type, rotationally symmetric base body. The base body is provided with at least one essentially cylindrical inner chamber, having toothed elements in order to receive the pipe end. The toothed elements are displaced radially into the pipe end arranged in the inner chamber by means of a pressing device which impinges upon the outer surface of the base body. A pressing device consisting of a shaping ring and a corresponding pair of shaping rings guarantee that the radial displacement potential is realized in the form of a radial displacement, resulting in significantly lower pressing power.

대표청구항 ▼

1. A device for providing a pressure sealed coupling of tube ends of two tubes, comprising:a cylinder-shaped coupling sleeve having a sleeve interior surface defining a substantially cylindrical interior space, said sleeve interior surface being equipped with teeth means for receiving each of the tu

1. A device for providing a pressure sealed coupling of tube ends of two tubes, comprising:a cylinder-shaped coupling sleeve having a sleeve interior surface defining a substantially cylindrical interior space, said sleeve interior surface being equipped with teeth means for receiving each of the tube ends, said teeth means being radially displaceable into surfaces of said tube ends received by the interior space by pressure acting on an outer surface of said coupling sleeve;said sleeve interior surface defining at least two radially surrounding indentations spaced from one another and recessed with respect to an inner diameter of said coupling sleeve and having said teeth means disposed therein for engaging respective ends of said two tubes;said outer surface of said coupling sleeve defining radially surrounding locating features which have a width corresponding to a width of said indentations and are opposite said respective indentations;pressure rings concentrically slidable over said coupling sleeve for covering said coupling sleeve, said pressure rings each having an inner surface having radially surrounding projecting parts aligned with said locating features and an increasing cone-shaped enlargement of an outer surface thereof which is directed from each end of the pressure rings towards a center thereof; andpress rings concentrically enclosing each of said pressure rings on each side, said press rings each having a cone-shaped enlargement corresponding to said cone-shaped enlargement of said pressure rings such that during axial shifting of said press rings toward each other from a spaced initial position into an almost final position with said press rings at least almost in mutual contact, a radial displacement of said indentations occurs pressing said teeth means into said outer surfaces of said tube ends received by said coupling sleeve by means of said projecting parts and said locating features corresponding to said projecting parts. 2. A device according to claim 1, wherein top surfaces of said press rings are stepped up, the stepping comprising at least one sequence of a conically increasing section plane followed by an undercut section comprising a cone-shaped neck, and the inside surfaces of said press rings are formed complimentarily to corresponding areas of said pressure rings. 3. A device according to claim 1, wherein:pairs of said press rings each further include a cylindrical covering sleeve spanning a space between said press rinds and having inwardly facing edges at end borders thereof,a top surface of each of said press rings is formed with a pair of radially surrounding, spaced grooves for receiving said inwardly facing edges which are engageable with the surrounding, spaced grooves such that said edges engage in a pre-pressed condition of said device with a first of said annular, spaced grooves, and in the pressed condition of said device said edges engage in a second of said annular, spaced grooves, andwherein both said edges and said annular, spaced grooves include run-out bevels. 4. A device according to claim 1, wherein a radially surrounding flute is formed in said projecting parts for the formation of a balancing area. 5. A device according to claim 1, wherein said press rings comprise axially extending bores for receiving tension elements acting between said press rings which are located on a common graduated circle. 6. A device according to claim 5, wherein said bore in a first of said press rings is formed as a through hole, and said bore in a second of said press rings is formed as a threaded hole for receiving a screw. 7. A device according to claim 1, wherein each of said pressure rings comprises a plurality of segments. 8. A device according to claim 7, wherein each of said pressure rings is provided on a top surface with axially extending slots. 9. A device according to claim 7, wherein a flexible distance mass maintaining a symmetrical distribution of said segments on a circumference of each of said pressure rings is disposed between said segments. 10. A device according to claim 1, wherein a supporting sleeve is insertable into the end of a said tube, said supporting sleeve comprising on its outside radially surrounding asperities to compensate for substantial tolerances in the nominal width of said tube, and said supporting sleeve on one side comprising a flange which limits inserting said supporting sleeve into said tube.