Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Reexamination Certificate
2001-05-22
2003-06-17
Kuhns, Allan R. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
C264S255000, C264S276000, C264S311000, C264S338000
Reexamination Certificate
active
06579481
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a process for manufacturing a capital for an architectural column using rotation of a mold into which a foam and an elastomer have been placed. As used throughout this document, the term “elastomer” is meant also to include a “resin”; and the term “foam” includes any liquid that will expand and create a lightweight filler.
2. Description of the Related Art
The inventor is unaware of any patents concerning the making of an architectural structure through the rotation of a mold into which a foam-elastomer has been placed.
Capitals for architectural columns are traditionally made from a variety of materials, ranging from cement and plaster to fiberglass and resins. The processes by which capitals are manufactured utilizing such materials, however, often consume considerable time and are otherwise inefficient. Moreover, capitals made from traditional materials tend to be heavy, brittle, and prone to warping.
It is assumed by the inventor that capitals have not been made from elastomers or both foam and elastomers because of the difficulty that has been experienced in working with elastomers and foam.
SUMMARY OF THE INVENTION
Elastomers are placed inside a mold that is rotated about three axes to assure that the elastomers cover the entire inside surface of the mold. Several different coatings of elastomers are utilized.
Elastomers are utilized to give strength to the capital. However, to minimize weight while reducing the tendency of a hollow capital to warp, the space inside the elastomers is filled with foam.
Rotation of the mold can be accomplished in any manner but is preferably done with a machine.
REFERENCES:
patent: 4183883 (1980-01-01), Blair
patent: 5253460 (1993-10-01), Simenoff
patent: 5568709 (1996-10-01), Steckler
patent: 5605023 (1997-02-01), Biernazki
patent: 5819485 (1998-10-01), Lane et al.
patent: 6060006 (2000-05-01), Savenok
Fehr Thompson E.
Kuhns Allan R.
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