Windows for automobiles and the like
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United States of America Patent
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May 1, 2001
Grant Date -
N/A
app pub date -
Mar 11, 1999
filing date -
Nov 29, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A window for automobiles or the like, including a frame member which is composed of a thermoplastic synthetic resin material and formed integrally with a window plate. The frame member includes a substantially U-shaped cross-sectional portion formed of lip and web sections which are spaced from and opposed to each other on outer and rear surfaces of the window plate, respectively, and connected with each other by a bridge section having a continuous hollow inner space therein. The frame member is formed by injecting into a mold cavity a relatively small amount, as compared with the volume of the mold cavity, of molten thermoplastic synthetic resin material, and by injecting compressed gas into the resin material to urge the resin material against inner surfaces of the mold defining the cavity.
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