Image Number 3 for United States Patent #6571832.
A casing spacer disposed between and engaging an inner carrier pipe and an outer casing maintains separation between and alignment of the carrier pipe and the casing. The casing spacer includes plural connected shell members, or segments, disposed about and engaging an outer surface of a carrier pipe and an inner surface of the casing. Each shell member includes one or more non-slip members engaging the carrier pipe to prevent movement of the casing spacer along the carrier pipe/casing combination. Each shell member is comprised of a high-strength, pliable material permitting shell members of different sizes to be connected together in a single casing spacer to accommodate a wide range of carrier pipe circumferences. The shell members are connected by plural nut and bolt couplers, with each shell member further including tapered coupling apertures and plural connector flanges to facilitate assembly and installation.