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US 12,404,954 B2Granted
Pipe coupling
AssigneeFladby Connector AS
InventorsJostein Fladby, Trygve Fladby, Sissel Fladby van Woensel Kooy
Life of this patent
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Abstract
A pipe coupling is described comprising an outer tubular part (1) with threads inside, an inner tubular part (10) with threads outside, and a sleeve (5) where on a first half of the sleeve there are external and inner threads which fit in the threads of the outer and inner tubular parts, respectively, so that the sleeve (5) can be screwed into the outer tubular part (1) while it is simultaneously screwed onto the inner tubular part (10) and the outer and inner tubular parts are firmly connected to each other through the threads on the sleeve (5).
Claims8
A pipe coupling comprising:
- an outer tubular part having a first inner diameter and first internal threads,
- an inner tubular part having a second inner diameter and first external threads having a first outermost thread diameter,
- the first inner diameter being equal to the second inner diameter;
- a sleeve having a threaded first half of the sleeve and a second half having a cylindrical inside portion having a third innermost diameter that is greater than the first outermost thread diameter, the threaded first half having second internal threads which fit into the first external threads of the inner tubular part and the threaded first half having second external threads which fit into the first internal threads of the outer tubular part, so that the sleeve can be screwed inwards into the outer tubular part while the sleeve is simultaneously screwed outwards onto the inner tubular part so that the inner tubular part and outer tubular part are in fixed relation relative to each other while the sleeve is being screwed onto the outer tubular part and the inner tubular part, and
- the outer tubular part and inner tubular part become connected to each other through the second internal threads and second external threads of the sleeve,
- wherein at one end of the inner tubular part there is a sealing ring groove with a sealing ring for sealing against a smooth cylindrical portion on the outer tubular part.
3 more elements
Dependencies are inferred from the claim text.