Pipe coupling
AssigneeGlynwed Pipe Systems Limited
InventorsBrian Rex, Brian Harper
Life of this patent
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Abstract
A pipe coupling for attachment to a pipe includes a sleeve. One end of the sleeve is configured to receive a pipe end. The pipe coupling also includes an annular gasket disposed within the end of the sleeve for encircling the pipe end. The coupling includes a flanged assembly for compressing the annular gasket to form a seal between the pipe and the sleeve. The sleeve and the gasket are configured so as to define a leak path between an axially inner portion of the gasket and the inner surface of the sleeve, whereby pressurized fluid from the pipe may pass along the leak path so as to pressurize a radially outer surface of the gasket and urge the gasket against the compression flange to enhance the seal between the gasket and the sleeve.
Claims55
A pipe coupling for attachment to a pipe, the coupling comprising a sleeve, the sleeve having at least one end which is configured to receive therein an end of the pipe, the at least one end having an enlarged bore region;
- annular sealing means completely disposed within the enlarged bore region for encircling the pipe end;
- and compression means for compressing the annular sealing means to form a seal between the pipe and the sleeve;
- wherein at least one of the sleeve and the sealing means is configured so as to define a leak path between an axially inner portion of the sealing means and the inner surface of the sleeve whereby in use pressurized fluid from the pipe may pass along the leak path so as to pressurize a radially outer surface of the sealing means and urge the sealing means against the compression means thereby to enhance the seal between the sealing means and the sleeve.
A pipe coupling for attachment to a pipe, the coupling comprising a sleeve, the sleeve having at least one end which is configured to receive therein an end of the pipe, the at least one end having an enlarged bore region;
- annular sealing means completely disposed within the enlarged bore region for encircling the pipe end;
- and compression means for compressing the annular sealing means to form a seal between the pipe and the sleeve;
- wherein there is formed a leak-path between an axially inner portion of the sealing means and an inner surface of the sleeve whereby in use pressurized fluid from the pipe may pass along the leak-path so as to pressurize a radially outer surface of the sealing means and urge the sealing means against the compression means thereby to enhance the seal between the sealing means and the sleeve.
Dependencies are inferred from the claim text.