Method of making a rotary molded plastic member with variable wall thickness
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United States of America Patent
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-
Jun 25, 2002
Grant Date -
N/A
app pub date -
Oct 5, 1999
filing date -
Oct 5, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A one-piece face mask with an integral inflatable cushion for use in providing an anesthetic to a patient. The mask has a dome shape outer wall terminating at its circumference in a thickened base on which the inflatable cushion is supported. The one-piece mask is formed by a combination of a rotational plastic molding process and gravity casting, which enables the different parts of the mask to be made of different thicknesses related to the function performed by the different parts in use of the mask.
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