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Drywall corner-finishing accessory
| Details |
Inventors: Koenig, Jr., Joseph M.;
Assignee: Trim-Tex, Inc. (Lincolnwood, IL)
Primary Examiner: Friedman; Carl D.
Assistant Examiner: Smith; Creighton
Attorney, Agent or Firm: Dressler, Goldsmith, Shore & Milnamow, Ltd.
A drywall corner-finishing accessory comprises three integrally joined, elongate strips, namely two relatively rigid, lateral strips and a relatively pliable, middle strip coextruded respectively from polyvinyl chloride having different durometer hardnesses. Each lateral strip has a rib along one edge. At its opposite edges, the middle strip is joined to the lateral strips at the distal edges of the ribs, preferably being joined to lateral surfaces of the ribs, so that a broad surface of the middle strip is stepped from the lateral strips. The accessory is flexible along the middle strip selectively to define a stepped, inside corner and to define a stepped, outside corner. The rib of each lateral strip guides a drywall-finishing tool and has a grooved pocket opening toward the distal edge of such lateral strip to receive drywall-finishing material. |
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DETAILED DESCRIPTION This invention provides a drywall corner-finishing accessory comprising three integrally joined, elongate strips, namely two lateral strips and a middle strip.
Preferably, the lateral strips are relatively rigid and the middle strip is relatively pliable.
Each lateral strip has a broad portion with a distal edge and a proximal edge.
Each lateral strip also has a rib with a distal edge and a proximal edge merging with the proximal edge of the broad portion of such lateral strip.
The middle strip has two opposite edges and a generally uniform thickness substantially between the opposite edges.
The middle strip is joined at each of the opposite edges to the rib of one of the lateral strips at the distal edge of the rib thereof so that a broad surface of the middle strip is stepped from the broad portions of the lateral strips.
The accessory is flexible along the middle strip, between its opposite edges, selectively to define a stepped, inside corner and a stepped, outside corner.
When the accessory is flexed to define a stepped, inside corner, the ribs are directed inwardly so as to constitute means for guiding a tool used to apply drywall-finishing material over the lateral strips.
Moreover, the stepped surface of the middle strip faces inwardly and has a concave curvature substantially between the ribs of the lateral strips.
When the accessory is flexed to define a stepped, outside corner, the ribs are directed outwardly so as to constitute means for guiding a tool used to apply drywall-finishing material over the lateral strips.
Moreover, the stepped surface of the middle strip faces outwardly and has a convex curvature substantially between the ribs of the lateral strips.
Preferably, the rib of each lateral strip has a grooved pocket to receive drywall-finishing material, the pocket opening toward the distal edge of such lateral strip.
Preferably, the rib of each lateral strip has a lateral surface, to which the middle strip is joined.
If the rib has a grooved pocket, as mentioned, the lateral surface having the middle strip joined thereto is opposite to the grooved pocket
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