US 11,946,314 B2
Systems and methods for providing door clearance modification
Paul M. Goldense, Medfield, MA (US)
Assigned to GOLDENSE OPENINGS SOLUTIONS LLC, Medfield, MA (US)
Filed by GOLDENSE OPENINGS SOLUTIONS LLC, Medfield, MA (US)
Filed on Jul. 30, 2021, as Appl. No. 17/389,799.
Application 17/389,799 is a continuation of application No. 16/446,061, filed on Jun. 19, 2019, granted, now 11,118,394.
Claims priority of provisional application 62/765,296, filed on Aug. 20, 2018.
Claims priority of provisional application 62/688,783, filed on Jun. 22, 2018.
Prior Publication US 2021/0355748 A1, Nov. 18, 2021
Int. Cl. E04C 2/00 (2006.01); E06B 5/16 (2006.01)
CPC E06B 5/164 (2013.01) 18 Claims
OG exemplary drawing
 
1. A system for modifying a fire door clearance, comprising:
a non-flammable metal strip configured to wrap around an edge of a door; and
an intumescent material applied to an inner portion of the non-flammable metal strip such that the intumescent material is sandwiched between the non-flammable metal strip and the edge of the door wherein the non-flammable metal strip is fastened to the door with an adhesive and a mechanical fastener in the door that engages a slot in the non-flammable metal strip,
wherein the non-flammable metal strip slides away from the edge of the door in response to an expansion of the intumescent material to seal a clearance between the edge of the door and an adjacent structure,
wherein the mechanical fastener in the door engaging the slot in the non-flammable metal strip guides the non-flammable metal strip such that the non-flammable metal strip slides away from the edge of the door in a first predetermined direction Rwhenlland is prevented from sliding in a second predetermined direction in response to the expansion of the intumescent material.