Coating apparatus – Work surface shields – masks or protectors – Work-attached
Reexamination Certificate
1999-04-15
2001-06-19
Lamb, Brenda Adele (Department: 1734)
Coating apparatus
Work surface shields, masks or protectors
Work-attached
C118S301000, C118S504000
Reexamination Certificate
active
06248173
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to temporary masks and protective coverings useful for preventing paint or other coatings from being deposited on ferromagnetic objects or surfaces.
2. Description of Related Art Including Information Disclosed under 37 CFR 1.97 and 37 CFR 1.98.
During painting or coating operations of a home's interior, it is necessary to keep certain areas, such as, door hinges, light and socket covers, or any other surfaces free from being painted or coated. The standard method for preventing a door hinge or some other area from being coated with paint or stain involves using different types of adhesive-backed tapes to cover or “mask off” the areas over which a coating is undesirable. Even if the areas are to be covered with some other type of “mask” such as plastic sheeting or masking tape that material still needs to be taped into place. In any event the covering these selected surfaces is a slow, tedious and expensive process.
Not masking the door hinges or doing a poor job in masking them leads to unsightly coating of the hinges which could lead to the door not opening or closing properly. Eventually, the coating covering the hinges will have to be removed. Removal can be accomplished in two ways. The first method involves physically removing the coating by scraping it off or using an abrasive such as steel wool. The second methods involves chemically removing the coating using harsh solvent. In utilizing either time consuming and labor intensive method, the underlying metal surface is likely to be marred.
If chemical solvents are used to remove paint or stain, they may also pose a threat to the safety and health of the user. Most common wood stains are oil-based and must be removed with commercially available stain removers. These stain removers typically contain methylene chloride which causes damage to the central nervous system if inhaled over prolonged periods. They are also eye and skin irritants and can be potentially fatal if swallowed.
Alternatively, a door and its hinges could be removed from the door jamb altogether. However, if the door itself needs to be painted or stained, the hinges must also be removed from the door. A standard interior door in a residential building has three hinges each held in place by at least three screws. Removal of the hinge from this door is a time-consuming process.
Therefore, there is a substantial need for a means to mask the hinges of a door in place, which is quickly and easily applied and removed.
SUMMARY OF THE INVENTION
The present invention solves the problem of masking door hinges or other metallic surfaces which need to be covered during interior home painting. It also provides economy of time in the painting or coating of doors insofar as the hinges are left free of any deposit which must be removed after a coating is applied.
This invention contemplates a coating masking member having a face side and a reverse side. The face side is a vinyl film, and the reverse side is a magnetic backing. The coating masking member conforms to the shape of an area over which a coating is not to be applied. The coating masking member may contain a handle or handles to effect easy removal of the coating masking member from the surface to which it is applied.
Alternatively, the coating masking member may contain two planar members having face sides and reverse sides, the face sides having a vinyl film disposed upon them and the reverse sides having magnetic surfaces disposed upon them. The two planar members are connected by a flexible sheet having a face side and a reverse side. The flexible sheet conforms to the shape of a hinge pin that connects the first and second hinge plates of a hinge. This coating masking member may conform to the shape of a door hinge.
Furthermore, this coating masking member may contain at least one handle connected to it to effect easy removal of the coating masking member from a surface.
The invention further contemplates a method for using the coating masking member. This method involves the placing of the coating masking member onto a door hinge, coating the surface of the door or its surrounding area, and then removing the coating masking member once the coating has dryed.
REFERENCES:
patent: 196419 (1877-10-01), Blake
patent: 1590629 (1926-06-01), Julius
patent: 2014072 (1935-09-01), Newmann
patent: 3961602 (1976-06-01), Dresser
patent: 4796330 (1989-01-01), Ziegler
patent: 5198031 (1993-03-01), Derstine
patent: 5285014 (1994-02-01), Gilchrist
patent: 5702774 (1997-12-01), Griffin et al.
patent: 5800894 (1998-09-01), Navis
Handal & Morofsky
Lamb Brenda Adele
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