Abstract: The invention relates to a permanent method of repairing leaking, damaged or weakened pipe by grit blasting the pipe (10), followed by wrapping it with a fibre reinforced composite material (12), then installing two half oversized steel sleeves (14). After that the non-gaseous matter is removed by fresh water and compressed air or inert gas. An epoxy or cementitious grout or a combination of both is finally injected into annular chamber (20) of the sleeves through pre-installed inlet port (16) and outlet port (18). The epoxy of cementitious is then allowed to cure. The means to seal the terminal end of steel sleeves includes a pair end flanges (32) matingly securable to a pair of terminator bodies (45).

Abstract: The present invention is directed to a protective device for a nut and bolt assembly which assembly is used to secure two or more parts together. The invention a tubular shaft member to protect the bolt and a tubular shaft or hemispherical body to cover the nut or to cover the tubular shaft and nut together. The tubular shaft is either an independent unit or is integrally connected to the hemispherical body. In more embodiments a connecter unit is used. Grease or other protective agent is introduced into assembly to prevent rust and deterioration.