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Patent Searching and Data


Title:
THREADED PIPE JOINT
Document Type and Number:
WIPO Patent Application WO2002035128
Kind Code:
A3
Abstract:
A threaded coupled connection for pipes comprises two pins (1', 1") with a threaded portion (6) having a frustoconical shape and asleeve or coupling (2), with two threaded portions (7) of frustoconical shape. On the pins (1', 1") and on the coupling (2) there are provided two abutment surfaces (5', 5") having an annular shape and inclined at an angle ( ) with respect to the axis of the pipes (1', 1") and two pairs of sealing surfaces (10', 10", 11', 11"), of which one first pair (10', 10") is set at the end of the pins (1', 1") and creates a seal in regard to the internal environment, and of which one second pair (11', 11") is set at the opposite end of the threaded portions (6, 7) in the end region ofthe coupling (2) and creates a seal in regard to the environment external to the pipe.

Inventors:
DELLA PINA GIUSEPPE (IT)
ROTINI GIUSEPPE (IT)
SIGNORELLI ANGELO (IT)
Application Number:
PCT/EP2001/011574
Publication Date:
July 25, 2002
Filing Date:
October 08, 2001
Export Citation:
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Assignee:
DALMINE SPA (IT)
DELLA PINA GIUSEPPE (IT)
ROTINI GIUSEPPE (IT)
SIGNORELLI ANGELO (IT)
International Classes:
E21B17/08; F16L15/04; F16L15/06; E21B17/042; (IPC1-7): F16L15/06; E21B17/042; F16L15/04
Foreign References:
EP0916883A11999-05-19
US4377302A1983-03-22
US3109672A1963-11-05
US4153283A1979-05-08
EP0703396A11996-03-27
US5360239A1994-11-01
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