Plastic article or earthenware shaping or treating: apparatus – Immersed shaping orifice discharging directly into liquid... – Means directing product through tubular conduit within bath...
Patent
1992-10-27
1994-08-30
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Immersed shaping orifice discharging directly into liquid...
Means directing product through tubular conduit within bath...
49 741, 26417717, 2642093, 2642094, 2642098, 425 71, 425325, 4253261, 425388, 425392, B29C 4790
Patent
active
053421876
ABSTRACT:
A shutter door assembly assembled primarily from extruded plastic components is provided. The shutter door assembly includes an outer rectangular frame surrounding a pivotally attached vaned panel door. Various side, top, and bottom legs of the frame and door are constructed of a hollow extruded plastic and are securely mounted together to form a rigid, durable shutter door. The resulting shutter door has the general look and feel of an actual wooden door. An after-former device for forming extruded tubes for use in the shutter assembly is also provided. The after-former system mounts to a standard circular extrusion head, and converts a circular tube of extrudant to a desired noncircular shape, such as a rectangular shape. The after-former has a conical conduit, with an entrance aperture having a circular shape for receiving the initial extrudant and an exit aperture having the desired noncircular cross-section. As the extrudant passes through the conical conduit, the extrudant is gradually transformed to the desired noncircular cross-section.
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Chiesa Richard L.
U.S. Polymers, Inc.
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