Vacuum metallizing interior of hollow article with masking shield
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United States of America Patent
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Feb 26, 1980
Grant Date -
N/A
app pub date -
Sep 14, 1977
filing date -
Sep 18, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum metallizing apparatus and method for coating the inside of hollow articles, e.g. tap control knobs, in which the article is engaged with a seating of a hollow body so that the interior of the article and the hollow body define a chamber in which high vacuum can be induced through the hollow body. A heating assembly is mounted in the hollow body for vaporizing the coating metal. The heating assembly is enclosed by a shield and may be associated with a shutter that is movable to interfere with deposition inside the article for certain coating metals.
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