US 12,454,824 B2
Building joint with compressible firestopping component
Donald Anthony Pilz, Livermore, CA (US)
Assigned to CEMCO, LLC, City of Industry, CA (US)
Filed by CEMCO, LLC, City of Industry, CA (US)
Filed on Aug. 18, 2021, as Appl. No. 17/445,393.
Claims priority of provisional application 63/110,293, filed on Nov. 5, 2020.
Claims priority of provisional application 63/067,583, filed on Aug. 19, 2020.
Prior Publication US 2022/0056686 A1, Feb. 24, 2022
Int. Cl. E04B 1/94 (2006.01); E04B 2/58 (2006.01)
CPC E04B 1/947 (2013.01) [E04B 1/948 (2013.01); E04B 2/58 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A head of wall assembly, comprising:
an overhead structure;
a header track attached with the overhead structure, the header track including a first flange and a second flange coupled to a web;
at least one stud attached to the header track and having an upper end received between the first and second flanges;
a wallboard attached to the at least one stud;
a deflection gap disposed between an upper edge of the wallboard and the overhead structure;
an elongate, compressible firestopping component received within the deflection gap to block passage of fire, heat, smoke and/or sound, through the deflection gap, the elongate, compressible firestopping component comprising:
a first end;
a second end;
a compressible foam material having rectangular cross-sectional profile and including a first side and a second side meeting at a corner, a third side opposite the second side, and a fourth side opposite the first side, the rectangular cross-sectional profile extending from the first end to the second end;
the first side including an intumescent strip having a first width, the first width extending from a first edge to a second edge, the first edge of the intumescent strip located at the corner;
the second side including a first portion covered by a factory-applied double-sided tape layer and a second uncovered portion, the double-sided tape layer having a second width, the second width extending from a first edge to a second edge, the first edge of the double-sided tape layer, located at the corner, such that the first edge of the double-sided tape layer and the first side of the compressible foam material are coplanar;
wherein the first width of the intumescent strip is greater than 50% of a width of the compressible foam material;
wherein the second width of the double-sided tape layer is less than 50% of a height of the compressible foam material; and
wherein a first face of the double-sided tape layer is attached to the second side of the compressible foam material, a second face of the double-sided tape layer is attached to an outer surface of the first flange of the header track, and the second uncovered portion of the second side faces the outer surface of the first flange;
wherein the intumescent strip contacts the overhead structure;
wherein the fourth side of the compressible foam material contacts the upper edge of the wallboard; and
wherein the double-sided tape layer comprises a polypropylene backing material and a tackified acrylic adhesive.