The application discloses a fire protection cover for an electrical device recessed into a wall or ceiling, said, comprising one or more support layers coated with one or more layers of intumescent material. The device is especially useful for suspended ceilings or partition walls for preventing the passage of fire into or out of the ceiling or wall cavity. The cover may comprise one or more apertures to enable the cover to be ventilated and/or for access to cabling. In particular, the cover may be made of a mesh or perforated sheet. In the event of a fire, the intumescent material tumesces to block any holes within the cover or holes between the cover and wall or ceiling.

A container, having a plurality of microspheres, the microspheres containing substances, which when liberated from the microspheres, result in an endothermic or exothermic reaction or change of state resulting in a temperature change to the proximate container and contents contained therein, for bringing the contents to a substantially cooled or heated condition with respect to starting temperature.

A frame for bordering conduit access through a building floor has a rigid body portion and a lining of intumescent material on an interior surface of the rigid body portion. The intumescent material has sufficient expansion capacity to close off the opening through the frame under conditions which produce an intumescing of the lining. The rigid body portion itself is preferably made of a metallic material to enhance transfer of heat energy from the rigid body portion to the lining of the frame.

Embossed metallic flakelets have high damage resistance and can be produced readily. A method for production is also provided. The embossed metallic flakelets are produced by dip-coating an organic-inorganic composite layer 12 on upper and lower sides of a carrier layer made of a PVA film or the like by a sol-gel process, and pressing an original embossed pattern 14 having an embossed pattern against the organic-inorganic composite layer 12 under pressure to transfer the embossed pattern onto the organic-inorganic composite layer 12. A sample having the transferred embossed pattern is sintered, to form a metallic film 10 on the organic-inorganic composite layer 12 by deposition or the like. The organic-inorganic composite layer 12 is dip-coated on the metallic film 10 by a sol-gel process, they are sintered, the carrier layer is dissolved in water to separate the metallic film 10 which is held between the organic-inorganic composite layers 12 on the upper and lower sides of the carrier layer, and the separated metallic film 10 is pulverized into embossed metallic flakelets.

The method includes inserting a first stopper into the tie reinforcement hole, inserting a polymeric sealing material into the hole; inserting a second stopper into the hole, and pushing the second stopper into the hole until it compresses the polymeric sealing material between the first and second stoppers. A plunger-type device includes a container; a sealed compartment in the container containing a hardenable polymeric component; and a sealed compartment in the container containing a hardener. Another device includes an elongated body having an outside surface and two stopping elements protruding from the outside surface of the elongated body. Another device includes a tube formed of porous material enclosing a) two frangible cells, one containing a hardenable polymeric component and the other containing a hardener and b) a breaking element for breaking open the frangible cells. Another device includes a plug; two sealed compartments inside the plug, one containing a hardenable polymeric component and the other containing a hardener; and an elongated member extending from the plug which is adapted so that, when it is pulled from the plug, the sealed compartments are opened so that their contents may contact each other.