Title:
PIPE JOINT ASSEMBLY AND METHOD FOR USING SAME
Document Type and Number:
WIPO Patent Application WO2001073332
Kind Code:
A3
Abstract:
The present invention relates to a method for sealing an end of a pipe to an external sealing surface. The method includes providing a pipe assembly which includes a pipe (2) and a flange (8). The pipe includes a proximal pipe end (12) and a flared end region (16). The flared end region is integral with the pipe and is proximate to and continous with the proximal pipe end. The flange is non-integrally disposed around the pipe distal to the pipe's flared end region. The method further includes securing, non-integrally and distally to the pipe's flared end region, the flange to the pipe so that proximal movement of the flange relative to the pipe is restricted. The flange is drawn toward the external sealing surface (4), which causes the flange sealing surface to bias the pipe's flared end region into sealing contact with the external sealing surface. Pipe assemblies which include a backup ring (38) having a tapered outside surface are also discussed. The methods and assemblies disclosed herein are particularly useful for joining lengths of multilaminate, especially dual-laminate, pipe.
Inventors:
HEUBACH GLENN C
TRIPP JAY D
TRIPP JAY D
Application Number:
PCT/US2001/009186
Publication Date:
July 11, 2002
Filing Date:
March 22, 2001
Export Citation:
Assignee:
NON METALLIC RESOURCES INC (US)
International Classes:
C07C253/30; C07D307/87; C07C255/56; F16B9/00; F16B9/02; F16L23/024; F16L23/026; F16L23/028; (IPC1-7): F16L23/00
Foreign References:
| US6315335B1 | 2001-11-13 | |||
| US3604733A | 1971-09-14 | |||
| US2880020A | 1959-03-31 | |||
| US4282905A | 1981-08-11 |
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