Abstract: A fixed guide wheel that when coupled to a saw blade or a grinding wheel provides a sawing or grinding system that will control the exact depth at which the tools are allowed to perform. The guide wheel also rolls along the top surface of the work piece pushing down on it (pinching it) while the cutting or grinding process is occurring. The guide wheel has a central bearing that carries the saw blade or grinding wheel across the surface of the stone keeping the tools centered and balanced with each other. The guide wheel is made from a rigid, low-density material that absorbs vibration that would normally transfer from the grinding wheel to the material being cut.

Abstract: An assembly for attenuating shock waves is made of two flexible sheets arranged one over the other and joined by a plurality of seams, the flexible sheets being confined to form cells or recessed when joined together. The seams are arranged so as to surround the cells or recesses in the sheets, and the cells or recesses are filled with a shock attenuating material.

Abstract: Containers and enclosing devices such as pipes or tires can be protected from explosive shocks and blasts by incorporating blast mitigating material in at least one of the top and bottom sides of a container, or by wrapping or lining the enclosing device with a blast mitigating material.

Abstract: A container, such as a standard aircraft unit load device, a truck trailer, a ship's cargo compartment, or the like, is fitted with a blast mitigating material located within the container. The blast mitigating material can be fitted to the container during manufacture, or an existing container can be retrofitted.

Abstract: A striking tool assembly comprises a tool head including a tool eye having disposed therein a sleeve member for receiving an elongated tool handle to perform a manual tool work operation. A flexing structure enables the annular wall structure of the sleeve member to temporarily collapse inwardly for a retaining section to be located in a sleeve securing position when the sleeve member is moved in a longitudinal axial direction into the tool head eye. The sleeve member includes a tool eye mating portion and an overstrike portion. The tool head system comprises a plurality of tool heads each of which is effective to perform a different manual work operation. The sleeve member of each tool head assembly has an inner tapered bore including an inner frictionally mating surface effective to frictionally mate with a preselected elongated tool handle, which may be used interchangeably with each tool head of the tool head system.