Abstract: An attachable collar arrangement for a down hole apparatus that includes a collar member releasably insertable into a cutaway section disposed circumferentially around a tool joint or other down hole apparatus. The collar member is stabilized in position within the cutaway section by means of a stabilizing insert member which is releasably inserted between at least two sections of the collar member, and removably secured into a member insert receptacle disposed upon the tool joint or other down hole apparatus. Wear and erosion are directed to the collar member during drilling operations and the tool joint or down hole apparatus is thereby protected. The collar member is expediently replaceable when needed and drilling operations are extended over the life of particular drilling equipment to which the device is installed.

Abstract: A vehicle or stationary liquid, water or oil tank heater teaches that a hot fluid may be passed through a metal body placed in the water piping or in the vacuum piping, thereby melting any ice in the system and preventing further freezing. The system may be advantageously used with manifolds, valves, scrubbers, pipes or the water tank itself. The coolant flow path may be optimized for ease of production and/or efficient heat transfer. The invention may be used with an external source of hot liquid, or it may be used with a cuff which may slipped over any of a variety of devices in need of de-icing.

Abstract: A vehicle or stationary liquid, water or oil tank heater teaches that a hot fluid may be passed through a metal body placed in the water piping or in the vacuum piping, thereby melting any ice in the system and preventing further freezing. The system may be advantageously used with manifolds, valves, scrubbers, pipes or the water tank itself. The coolant flow path may be optimized for ease of production and/or efficient heat transfer. The invention may be used with an external source of hot liquid, or it may be used with a cuff which may slipped over any of a variety of devices in need of de-icing.