Abstract: A locking flex head tool is provided and consists of a device for swiveling a tool head portion to a plurality of fixed positions with respect to a handle portion.

Abstract: A portable shower system which when disassembled utilizes its own shower curtain, and base for securing other parts of the system into a compartment in its base so that the entire system can be stored as a single unit, without accidental separation and loss of its various parts.

Abstract: A cover placable upon a top of a cup used as a hole on a golf course; the cover including a small central opening that is just large enough for a golf ball to enter, and an upper side of the cover surrounding the opening having simulated grass affixed thereupon which matches actual grass growing around the golf course hole. The cover is supported on the cup by spurs which extend sidewardly of the cover's perimeter and alternately positioned flexible fingers which extend downwardly from the periphery of the cover and fit tightly against the inside wall of the cup.

Abstract: A novel type of heat exchanger that pre-heats a fuel prior to being burned within a home furnace, so that the fuel burns better; the device consisting of a coiled tube running axially through a narrow pipe that extends transversely through a wide pipe, one of the pipes being located along a hot water line of the house that is used for washing, bathing and the like while the other pipe is along a house heating line such as for a baseboard hot water heating system, whereby use of either hot water line will preheat fuel moving through the coiled tube so that in effect the device forms a double heat exchanger.