Abstract: A system and method for cleaning of heat exchanger tubes including an assembly, an indexer, and a communication device provided with specialized software and programming. The indexer includes orthogonally arranged first and second arms. A trolley and sensors are provided on the indexer arms. One or more lances are provided on the trolley to deliver water jets into the openings. Sensors measure displacement as the trolley is moved relative to the heat exchanger's face plate. An operator controls the system from a distance away using the communication device. During setup, the pattern of the face plate is learned and mapped utilizing information from the sensors as one of the inputs. This information is utilized to help navigate the face plate during a subsequent cleaning operation. A kit for retrofitting existing X-Y indexers is also disclosed.

Abstract: A body support arrangement comprising a pair of flexible elongate tubes (12) forming air springs openings located in spaced parallel relationship by stabilizer members (14) which space and impart lateral stability to the tubes (12). A body support surface is formed by a series of slats (20) extending transversely of and resting on the tubes (12). The slats (20) are fixedly attached, for example by adhesive, to a flexible sheet (22).

Abstract: A body support arrangement comprising a pair of flexible elongate tubes (12) forming air springs located in spaced parallel relationship by stabilizer members (14) which space and impart lateral stability to the tubes (12). A body support surface is formed by a series of slats (20) extending transversely of and resting on the tubes (12). The slats (20) are fixedly attached, for example by adhesive, to a flexible sheet (22).

Abstract: A mattress support system including a support frame, tubular air springs and mattress support slats extending between pockets formed at a top surface of sleeves surrounding bladders of the tubular support springs.