METHOD OF MANUFACTURE OF PROTECTIVE PARTS FOR PROTECTION OF INTERNAL TAPER THREAD Russian patent published in 1999 - IPC

Abstract RU 2135882 C1

FIELD: protection of internal taper threads of connecting couplings of oil pipes. SUBSTANCE: method consists in manufacture of protective taper bush from foaming, for example, from polystyrene. Outer diameter of bush exceeds minor diameter of thread by amount allowing flexible compression of bush materials. Flange is formed on end face of bush. Foaming of polystyrene is performed in molds in atmosphere of water steam at temperature of 110 to 120 C. EFFECT: low cost of manufacture of protective devices; ease of mounting and dismantling protective parts in course of operation; enhanced tightness of joints. 3 cl

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RU 2 135 882 C1

Authors

Zyrjanov B.K.

Gubin Ju.G.

Solov'Ev S.A.

Dates

1999-08-27—Published

1995-12-14—Filed