Plaster stop, drip screed, plaster reveal, plaster vent expansion joint & casing bead, and processes therefor

Abstract

A casing bead having a U-ish or J-ish shape comprises, consists essentially of, or consists of an item, e.g., sheet metal, formed in a bent shape. The shape is formed of a first section, followed by a second section, a third section, and a fourth section. Alone, the casing bead's first and fourth sections have interior uninterrupted facing surfaces, and the second section is substantially perpendicular to the first and fourth sections.

1 . A casing bead having a J-shape, comprising:
 a sheet exhibiting a bent shape and having, in order, a first section, a second section, a third section, and a terminal and planar fourth section,   wherein the first and fourth sections have interior-facing, substantially perpendicular surfaces, and   the second section is substantially perpendicular to the first and fourth sections.   
     
     
         2 . The casing bead of  claim 1 , wherein the third section is oriented at about 15° to about 75° relative to the second section. 
     
     
         3 . The casing bead of  claim 1 , wherein the third section is oriented at about 45° relative to the second section. 
     
     
         4 . The casing bead of  claim 1 , wherein the first and fourth sections are substantially parallel to each other. 
     
     
         5 . The casing bead of  claim 1 , wherein the J-shape includes a void located between the second section and the third section. 
     
     
         6 . (canceled) 
     
     
         7 . The casing bead of  claim 1 , wherein the J-shape includes holes in the second or third sections. 
     
     
         8 . The casing bead of  claim 1 , wherein the J-shape includes holes that span neighboring sections. 
     
     
         9 . The casing bead of  claim 1 , comprising substantially identical circular holes. 
     
     
         10 . The casing bead of  claim 1 , consisting essentially of the first, second, third, and fourth sections, wherein at least the fourth section is a terminal section. 
     
     
         11 . The casing bead of  claim 10 , consisting of the first, second, third, and forth sections, the first and fourth sections being terminal sections. 
     
     
         12 . A casing bead, consisting essentially of:
 a planar sheet existing in a spurred J-shape of a first section, followed by a second section, followed by a third section, and followed by a terminal and planar fourth section,   wherein the first and fourth sections have interior facing surfaces, and   the second section is substantially perpendicular to the first and fourth sections.   
     
     
         13 . The casing bead of  claim 12 , comprising a plurality of holes in the third and/or fourth sections. 
     
     
         14 . The casing bead of  claim 12 , wherein the sheet has a thickness sufficient to resist plastic deformation during ordinary use. 
     
     
         15 . The casing bead of  claim 14 , wherein the sheet thickness is 10 to 250 mils. 
     
     
         16 . A process for forming a casing bead having a spurred J-shape consisting essentially of a sheet formed in a bent shape comprising a first section, a second section, a third section, and a terminal and planar fourth section, comprising:
 (a) cutting out from a flat sheet of metal to form a blank of a preform shape; and   (b) bending the blank so that the first and fourth sections are formed to have interior facing surfaces and the second section is substantially perpendicular to the first and fourth sections.   
     
     
         17 . The process of  claim 16 , further comprising an extrusion or die formation step before during, or after step (a). 
     
     
         18 . The process of  claim 16 , forming a casing bead consisting essentially of aluminum. 
     
     
         19 . The process of  claim 16 , wherein step (a) is carried out before step (b). 
     
     
         20 . The process of  claim 16 , wherein the shape has an interior region of a thickness dimension appropriate to local measurement standards.