Abrading – Frame or mount – Portable abrader
Reexamination Certificate
2000-09-28
2001-12-04
Morgan, Eileen P. (Department: 3723)
Abrading
Frame or mount
Portable abrader
C451S344000, C451S524000, C451S525000
Reexamination Certificate
active
06325708
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to drywall sanders and more particularly to a drywall sander that is designed to sand a drywall corner.
BACKGROUND OF THE INVENTION
In the process of installing sheet rock or drywall, sheets of the material are usually secured to a stud wall and thereafter the joints and seams existing between the respective sheets are taped and covered with a drywall compound. Thereafter, these seams or joints are sanded which results in a smooth finish being formed along the seam and joint areas. However, in finishing sheet rock or drywall there is one particular area that is known to be problematic when it comes to sanding and finishing. The area being referred to is corner areas where sheets of drywall or sheet rock come together at a juncture to form a corner. The corner is typically finished with a drywall compound and thereafter sheet rock finishers sand and finish these corner areas. Typically the sanding of sheet rock corners is performed by the sheet rock finisher using a rectangular sanding block which is ordinarily about one inch thick. However, it is difficult to efficiently sand dry wall corners with such conventional sanding blocks. One principal problem that is sometimes encountered with using a conventional drywall sanding block is that the sanding block tends to dig grooves in the drywall compound especially in corner areas. The creation of these grooves simply compounds the problem and requires the sheet rock finisher to sand out the grooves which makes the job more laborious and time-consuming.
Therefore, there has been and continues to be a need for a device that is particularly designed to sand and finish drywall corners in an effective and efficient manner without cutting or forming grooves in the drywall compound in and around the drywall corner.
SUMMARY OF THE INVENTION
The present invention entails a drywall sander adapted to receive a generally V-shapid drywall sanding pad. The drywall sander is specifically adapted to sand and finish drywall corners and includes a carrier having a generally V-shaped surface for receiving and holding tie V-shaped sanding pad. Once the V-shaped sanding pad is secured on the carrier, then the carrier is typically moved up and down along the drywall corner with the drywall sanding pad assuming a position between the carrier and the drywall corner.
In one particular embodiment of the present invention, the carrier or base is provided with a pole attachment. An extension pole can be connected to the pole attachment and thus the drywall finisher by attaching a pole to the pole attachment can extend the drywall sander such that it reaches heights of eight to twelve feet, for example.
In a particular embodiment of the present invention, the drywall sander includes a base and a generally V-shaped pad holder with the V-shaped pad holder being adapted to receive and hold a V-shaped sanding pad. In this design, the sander is specifically designed to avoid cutting grooves or lines in the drywall compound formed about the drywall corner. To achieve this result, the drywall sander is designed such that it sands more aggressively along the juncture of the corner and sands less aggressively in areas that lie outwardly of the juncture. Expressed in another way, the drywall sander is designed such that its aggressiveness progressively diminishes from the central portion of the sander towards the outer portions. Thus, the sander tends not to cut grooves or lines in the drywall compound that is found outwardly of the center of the drywall corner.
Other objects and advantages of the present invention will become apparent and obvious from a study of the following description and the accompanying drawings which are merely illustrative of such invention.
REFERENCES:
patent: 2817931 (1957-12-01), Houser
patent: 3192678 (1965-07-01), Buratti
patent: 3279130 (1966-10-01), Nelson
patent: 4825597 (1989-05-01), Matechuk
patent: 5309681 (1994-05-01), Cheney et al.
patent: 5605500 (1997-02-01), Matechuk
Coats & Bennett P.L.L.C.
Morgan Eileen P.
LandOfFree
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