Abstract: Therapeutic roller apparatus including at least two easily interchangeable elongated, semi-cylindrical component assemblies, each formed by a rigid substrate component having a concave inner surface and a convex outer surface, and a resilient pad component affixed to and covering the outer surface of the rigid substrate part. The side edges of the component assemblies are adapted to mate together to form a cylindrical roller body having a first outer diameter. The roller body ends are provided with first latch elements. A pair of cylindrical end caps, each having an outer diameter greater than the roller's first outer diameter, and an inner diameter adapted to mate with and capture an end of the assembled roller body. The end caps include second latch elements adapted to lockingly engage the first latch elements and secure the entire assembly together. In use, all user weight applied to the roller body is transferred to the end caps.

Abstract: A therapeutic roller apparatus comprised of at least two replaceable resilient therapeutic massage pads and an associated pad substrates adapted to mate together to form a cylindrical roller body, and a pair of cylindrical end caps provided to lockingly mate with and enclose the ends of the roller body. The diameter of the end caps may be substantially greater than that of the roller so that user weight applied to the roller body is transferred to the end caps. The interior space of the roller body may be used as a storage chamber for storing sundry items. In addition, a detachable carry strap may be affixed to the end caps to accommodate transport of the device.

Abstract: Compositions for lightweight, waterproof, cementitious materials comprise portland cement, aggregates, two admixtures, and water. A first admixture comprises a major portion of calcium chloride and minor portions of sodium silicate and a wetting agent. A second admixture comprises an emulsion of ammonium stearate. Methods for producing cementitious materials include a process for manufacturing strong, lightweight, waterproof building products such as roofing tile, imitation bricks, and the like.

Abstract: A cover and integral straining relief mechanism for an electrical cable multiprong connector, including a two-piece cover utilizing identical and interconnecting halves assembling as a whole connector, mount, and cover. A strain relief mechanism utilizing a cubical insert is included. The cubical insert is a plunger-like mechanism containing teeth-like undulation along its side which interact in a ratcheting fashion with mating undulations within the connector cover. The plunger is inserted into at least one opening in the connector and comes into contact with a cable entering the connector through the remaining and unused opening. The plunger comes into contact with the insulation about said electrical cable such as to hold the cable securely within the connector, thereby providing strain relief action.

Abstract: A cover and integral straining relief mechanism for an electrical cable multiprong connector, including a two-piece cover utilizing identical and interconnecting halves assembling as a whole connector, mount, and cover. A strain relief mechanism utilizing a cubical insert is included. The cubical insert is a plunger-like mechanism containing teeth-like undulation along its side which interact in a ratcheting fashion with mating undulations within the connector cover. The plunger is inserted into at least one opening in the connector and comes into contact with a cable entering the connector through the remaining and unused opening. The plunger comes into contact with the insulation about said electrical cable such as to hold the cable securely within the connector, thereby providing strain relief action.