Abstract: A coated piston ring and method of manufacture for internal combustion engines and compressors. The piston ring having a outer peripheral surface that is coated with a thin substantially final finish spray wear resistant coating for contacting the cylinder wall. The material coating is deposited by high velocity oxygen fuel spray apparatus and a sharp bottom edge is lapped thereon for contacting the cylinder wall of the apparatus. The method of manufacturing comprising rotating a plurality of piston rings about a central axis while the high velocity oxygen fuel gun sprays molten coating material thereon. The molten coating material forming a mechanical interlock with the ring blank to produce a substantially final finish spray coating on the periphery of the piston rings.

Abstract: A clamp assembly for fixedly supporting a tube is disclosed herein and includes a main body member, a secondary body member and a locking member, the latter maintaining the two body members in an interlocked tube supporting position. The locking member is integrally formed to include a shaft, an enlarged head at one end of the shaft and a crossbar at the other end of the shaft. This integral member is interlocked with the secondary body member of the clamp assembly regardless of its position with respect to the main body member, as provided by a special hand tool.