Apparatus for preparing an annular body of a hydraulically setting mass
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United States of America Patent
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-
Dec 30, 1986
Issued Date -
N/A
app pub date -
May 16, 1984
filing date -
Dec 4, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Steel, cast iron, synthetic resin or concrete pipes are coated with a hydraulically setting mass, such as cement mortar or a mixture of cement, fibers, aggregates and optional additives, by entraining the mass before it has set from a storage container having two opposite walls moving at about the same speed, one of the container walls being formed by a portion of the circumferential wall of the pipe being rotated about its longitudinal axis and the opposite container wall being formed by a tensioned carrier band having one end affixed to the rotating pipe and the mass with the covering tensioned carrier band being wound around the rotating pipe.
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