Brushing – scrubbing – and general cleaning – Implements – Sponge or sponge with holder
Reexamination Certificate
2001-03-09
2001-09-18
Chin, Randall E. (Department: 1744)
Brushing, scrubbing, and general cleaning
Implements
Sponge or sponge with holder
C015S230110, C015S244400, C492S028000
Reexamination Certificate
active
06289548
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
None.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH
Not applicable.
BACKGROUND OF THE INVENTION
The present invention generally relates to tools used in the creation of faux paint finishes and more particularly to a patterned synthetic sponge that mimics natural sea sponge in the creation of faux paint finishes.
Broken pattern surface-coatings were popular in the 1930's. They were produced by techniques known as “ragging on” and “sponging” and which involved a rag or sponge that was used to disturb a freshly painted wall to produce a broken pattern. Considerable skill was required to produce an aesthetically pleasing affect.
Today, such specialty finishes can involve more than one color of paint in order to create a look that otherwise is only available from expensive wall coverings. One such technique involves the application of a base coat of one paint and the selective application of a different color top coat that can be applied by rag or sponge rolling. Alternatively, a top coat can be applied over a dried base coat and some of the top coat removed with a rag, sponge, cheese cloth, or other tool to create the specialty finish desired. U.S. Pat. Nos. 4,930,179 and 5,206,979 are examples thereof. In fact, it even has been proposed to use a bifurcated roller to apply two different colors at the same time in U.S. Pat. No. 5,713,095. A rag wrapped around a tube is another tool proposed in U.S. Pat. No. 5,471,703.
In reality, many of these tools were designed to take the place of scarce and expensive natural sea sponges that provide the most pleasing specialty faux finishes. Despite these designs, however, there still is a need to create a synthetic sponge that would mimic a natural sea sponge in its ability to create faux paint finishes.
BRIEF SUMMARY OF THE INVENTION
A patterned synthetic sponge mimics a natural sea sponge when creating faux paint finishes. Such synthetic sponge is formed from an open cell elastomeric material that bears a pattern that has been created by a rotating grinding wheel that removes sponge material with a tearing/teasing action. A rotating silicon carbide, or other abrasive grit, grinding wheel preferably is used to remove the elastomeric sponge material, which preferably is made from an open cell, inter alia, polyurethane, polyether, polyester foamed elastomer. A paint roller made from the novel patterned synthetic sponge has its edges beveled.
An array of, for example, servo controlled Carborundum® silicon carbide grinding wheels can be used to create patterns in the synthetic sponge which patterns are stored in a computer that also controls the manufacturing process. When the patterned synthetic sponges are in roller form, they can be used to create unique faux paint finishes that heretofore could only be created using natural sea sponges.
Advantages of the present invention include the ability to create roller that mimic natural sea sponges in their ability to create faux paint finishes. Another advantage is that the inventive patterned sponges can be mass-produced economically. These and other advantages will be readily apparent to those skilled in the art based on the present disclosure.
REFERENCES:
patent: 2467010 (1949-04-01), Coley
patent: 2805436 (1957-09-01), Christensen
patent: 3448479 (1969-06-01), Cademartori
patent: 4982472 (1991-01-01), Lustofin
patent: 5693141 (1997-12-01), Tramont
patent: 5858092 (1999-01-01), Tramont
patent: 6173472 (2001-01-01), McLaughlin
Chin Randall E.
Mueller and Smith LPA
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