DEVICE FOR COUPLING ANCHOR SLEEVE AND DUCT-FORMER Russian patent published in 2002 - IPC

Abstract RU 2178489 C1

FIELD: construction engineering; manufacturing reinforced concrete structures; bridge engineering. SUBSTANCE: device has with central conical and peripheral cylindrical parts of smaller and greater diameters threaded on outer surfaces to join them to anchor sleeve and duct-former, respectively. At least four ribs are formed on outer surface. Double-threaded peripheral part of smaller diameter forms two pairs of adjoining projections spaced from adjacent pair through distance longer by at least 1.2-2.0 times that between them in pair. Minimal distance between pair of annular ribs may be longer by at least 1.1 times than minimal size of one of them in pair; peripheral cylindrical part of smaller diameter may be coupled with central conical adapter tapered more than central conical part. Annular ribs may be formed by stepwise mounted members; distance between mentioned members does not exceed their thickness over circle length. EFFECT: enhanced reliability and service life of building structures. 4 cl, 2 dwg

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RU 2 178 489 C1

Authors

Romanov P.S.

Eremin V.M.

Rudomazin E.N.

Pustynnikov V.V.

Dates

2002-01-20—Published

2001-04-02—Filed