Abstract: A collar positionable about a panel penetrating member for sealing therearound and particularly for firestopping therearound which prevents the flow of smoke and may include an intumescent component for expansion during exposure to heat. A collar assembly is usable with members penetrating various types of panels including walls, ceilings and floors. The sealing member of the assembly includes frangible zones with removable sections which are mated to the construction of the mounting strap. The mounting strap includes engagement prongs and multiple engagement apertures securable with respect to one another in various relative positions for use with respect to panel penetrating members of various standardized sizes. The engagement of the prongs in various apertures is mated with the frangible zones on the sealing member for effective sealing around panel penetrating members of standardized sizes such as 3 inch, 3½ inch, 4 inch and 4½ inch and others.

Abstract: A firestopping apparatus for providing a fire barrier in a construction barrier. The apparatus is comprised of a sleeve within which there are located intumescent pads that are oriented to form a confinement area therebetween to accommodate various penetrating members such as cables, conduits and the like that need to pass through the barrier. Upon sensing the heat from a fire, the intumescent pads seal around the penetrating members to prevent the fire from passing through the barrier. One or both of the intumescent pads is movable toward or away from the other so that the confinement area can be adjusted in size, that is, the confinement area can be increased in size to accommodate a large number of penetrating members of decreased to accommodate a lesser number. One or both of the intumescent pads may be biased in the direction toward decreasing the size of the confinement area.

Abstract: A multi-part mounting assembly for securing a plurality of individual pathway conduits relative to one another extending through a wall panel between adjacently positioned wall studs including two support members extending parallel to one another and defining therebetween a pathway conduit zone for receiving the individual conduits along with end members for providing sealing at the outermost edges and one or more partitioning means securable at a plurality of discrete positions within slots defined in the support members and being securable with respect to the support members and including set screws for safely holding pathway conduits in position extending therethrough.

Abstract: A self-adjusting firestopping apparatus for holding of intumescent material within poke-through openings in construction barriers usually being floors but also possibly being walls or ceilings wherein cables or other penetrating members extend therethrough. The self-adjusting apparatus includes a sleeve with the intumescent material centrally located therein and preferably two plates extending along the sleeve and movably attached thereto by a flexibly resilient support device such as a coil spring or flat spring. This plate provides a movable false panel which is adapted to expand responsive to the placement of increasing numbers of penetrating members extending therethrough to increase the capacity of the intumescent firestopping device.

Abstract: A system for sealing a joint gap between structural substrate panels such as walls, ceiling and floors making use of a sealing member including a mounting section fixedly secured to one of the surfaces and a covering member extending outwardly therefrom into contact with the other substrate member. These walls, ceilings and floors can be movable relative to one another and thus the present invention provides a mechanism for sealing the joint gap between the substrates while allowing them to move with respect to one another. This is achieved by fixedly securing the sealing member to one of the substrates and urging it into abutting engagement with respect to the other substrate.

Abstract: An intumescent firestopping apparatus used in poke-through applications for selectively sealing an opening through a construction barrier such as a wall, floor or ceiling having cables or other penetrating members extending therethrough. The apparatus effectively seals this barrier responsive to a fire to prevent unwanted transmission of fire through conventional construction barrier areas. The apparatus includes a sleeve with two intumescent pads positioned therein. At least one of the pads has an arcuate curved central section to be biased against the other intumescent pad to define therebetween a confinement area for holding of cables centrally located therein in a dynamically adjustable sealing throat defined therebetween. These pads can be variously mounted with respect to the adjacent wall structures and one or both of the pads can be arched toward the other pad to facilitate defining of the dynamic throat for receiving cables extending therethrough.

Abstract: The present invention provides a firestop collar with an improved apparatus and method for mounting thereof with respect to a annular cavity formed in a wall or floor around a pipe or other cylindrical member protruding therethrough. The collar member preferably is positioned adjacent to the surface surrounding the protruding member and contains preferably intumescent material therein which is responsive to heat in order to expand and fill the aperture extending through the wall or panel during heat, fire or smoke conditions. The anchoring device for the present invention is adapted to hold the collar in abutment with the structural wall in position surrounding the penetrating conduit and it includes two leg members and an arcuate member. The arcuate member extends between the leg members and is made of a flexibly resilient material and has a radius of curvature less than that of the protruding conduit.

Abstract: An intumescent material and a process for forming of an intumescent material is disclosed including a two stage intumescent expansion characteristic. The composition includes an intumescent material having a primary expansion ingredient such as expanding graphite in combination with a pre-expansion material adapted to provide intumescent expansion at a temperature less than that of the primary expansion material. The pre-expansion material preferably is a liquid isobutane encapsulated within microspheres of any latex material or polyvinylidene. The pre-expansion step allows for a low density mass having fairly uniform dimensions relative to the original proportions of the specimen. A novel process for forming same allows heating to a temperature greater than the pre-expansion temperature within a closed mold to prevent pre-expansion by containment therein and still allow heat fusing of the fire barrier form.

Abstract: An intumescent material and a process for forming of an intumescent material is disclosed including a two stage intumescent expansion characteristic. The composition includes an intumescent material having a primary expansion ingredient such as expanding graphite in combination with a pre-expansion material adapted to provide intumescent expansion at a temperature less than that of the primary expansion material. The pre-expansion material preferably is a liquid isobutane encapsulated within microspheres of any latex material or polyvinylidene. The pre-expansion step allows for a low density mass having fairly uniform dimensions relative to the original proportions of the specimen. A novel process for forming same allows heating to a temperature greater than the pre-expansion temperature within a closed mold to prevent pre-expansion by containment therein and still allow heat fusing of the fire barrier form.