发明名称 |
Method of making a composite foamed resin ski |
摘要 |
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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申请公布号 |
US4486368(A) |
申请公布日期 |
1984.12.04 |
申请号 |
US19820431485 |
申请日期 |
1982.09.30 |
申请人 |
TEXAS RECREATION CORPORATION |
发明人 |
HANCOCK, KENDAL |
分类号 |
B29C33/18;B29C44/14;(IPC1-7):B29D27/00 |
主分类号 |
B29C33/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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