Method of making a composite foamed resin ski
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United States of America Patent
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-
Jan 6, 1987
Issued Date -
N/A
app pub date -
Dec 10, 1984
filing date -
Sep 30, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pre-shaped aluminum plate is held against the flat end wall of an inverted mold cavity by vacuum pressure communicated through bore holes in the wall leading to a vacuum chamber in the mold body. A high temperature PTFE gasket shaped to match the plate fits in an annular recess in the wall to provide a seal between the wall and plate. Polyurethane foam expands and hardens in the mold cavity to further press the plate against the wall and to form a foamed plastic water ski having a flush aluminum deck. The mold cavity has a curved side wall to produce a ski having a radiused edge about the deck.
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