In situ molded thermal barriers
AssigneeW.R. Grace & Co.-Conn.
InventorsMichael D. Morgan, Xiudong Sun, Laura A. Tennenhouse, Robert A. Wiercinski, Benita Dair, Antonio J. Aldykiewicz, Jr., Leon Bablouzian, Lawrence Shapiro, William J. Hurley, Jr.
Life of this patent
Estimating the term…
Abstract
The invention provides methods, systems, and devices for installing barriers in openings or gaps in or between structures such as walls, ceilings, and floors. At least one barrier molding bag is positioned in the hole or gap, and a flowable firestop material that is preferably operative to cure or harden, such as a hydratable cementitious slurry, is introduced into the bag to create a barrier in the hole or gap.
Claims29
A firestop molding bag, comprising:
- a first face, a second face, said first and second faces being connected to each other around peripheral edges thereby defining a bag enclosure for receiving a flowable fireproof ing material, at least one of said first and second faces having a plurality of holes or slits operative to release air pressure when said bag enclosure is filled with a flowable fireproofing material;
- said bag having a generally elongate body defined by a length dimension that exceeds a width dimension, at least one of said first and second faces having pleats or crinkles oriented perpendicularly with respect to said length dimension, said pleats or crinkles operative to permit expansion of the bag when flowable fireproofing material is introduced;
- said firestop molding bag further comprising an elastic band attached to said pleats or crinkles along said elongate body or further comprising a support strip attached to and extending along said elongate body.
A firestop molding bag, comprising:
- a first face made of transparent plastic film, a second face made of transparent plastic film, said first and second plastic film faces being connected to each other around peripheral opposite edges and opposing ends, thereby defining a bag enclosure having a generally elongate tube body defined by a length dimension that exceeds a width dimension;
- said first face of said bag having a series of pleats extending along said generally elongate tube body and arranged perpendicularly with respect to said length dimension, said first face further comprising a plurality of holes or slits for evacuating air when said bag is filled with a flowable firestop material;
- and
- said second face of said bag having at least one inlet valve for introducing a flowable firestop material into said bag and further having at least one flap member resiliently biased in a closed position against said at least one inlet valve, said flap member operative to permit firestop material to be introduced into said bag and to seal said inlet valve.
Dependencies are inferred from the claim text.