My invention is unification of shoe and swimming enforcing elements comprising water shoe to assure unconstrained and protected walking and promotion for swimming due to generating of additional tractive force in consequence of foot swimming motions. A flexible slip protected spatial internally partitioned sole, with upper reticulated surface and perforated side wall with outlet holes jointly provide free drainage of water and sand from a shoe upper body. For its turn upper body is also reticula...

A water turbine includes a casing, a rotor, a primary drive shaft, a speed-reduction gear set, and an output drive unit. The casing confines a water compartment, and is formed with a water inlet for admitting pressurized water into the water compartment, and a water outlet for discharging the pressurized water from the water compartment. The rotor is mounted rotatably in the water compartment, and is driven rotatably by flow of the pressurized water from the water inlet through the water outlet....

A method for the treatment of waste water by the generation of radicals in the waste water comprises applying to the waste water at least one substance which is capable of providing radicals in the waste water. The substance decomposes by a unimolecular mechanism or by hydrogen abstraction to form a carbon-containing radical on exposure to light or heat.

To provide a water pump capable of preventing coolant leaked from a shaft sealing member from invading a bearing by a simple construction, a water pump has an outer ring of a bearing attached to an inner peripheral face of a pulley, an inner ring of the bearing attached to an outer peripheral face of a cylindrical portion of a housing and a shaft sealing member attached to an inner peripheral face of the cylindrical portion.

A water circulation apparatus for desratifying a body of water such as in a lake or reservoir is disclosed. Broadly, the apparatus (1) comprises ducting in the form of a draft tube (2) having an upper end (3) positioned towards the surface of the body of water and a lower end (4) positioned towards the bottom of the body of water, and a pump assembly (5) for pumping water through the tube (2). Broadly, the pump assembly (5) comprises an impeller (20) having six to fourteen blades (21) having a d...

A water ski having an elongated body member having a fore-zone, a mid-zone, an aft-zone and a longitudinally extending X-axis. A major longitudinally extending groove is formed in the bottom surface of the water ski and it extends substantially the length of the mid-zone and the aft-zone. A plurality of longitudinally spaced left side minor grooves and right side minor grooves extend outwardly from the boundary edges of the major groove toward the respective left and right side edges of the wate...

A water filter includes an egg-shaped housing formed from a lower shell and an upper shell. The lower shell is divided into an intake chamber and an outflow chamber. A filter or membrane is placed between the upper and lower shells.

In a water heater, an outer casing includes a hollow flue tube that extends vertically from an inner periphery of a bottom wall thereof, and an outer surrounding wall that extends uprightly from an outer periphery of the bottom wall and that cooperates with the flue tube to confine a receiving space. A heat-conducting unit is mounted inside the receiving space so as to configure the receiving space with isolated first and second chambers. The first chamber is filled with a thermal superconductor...

Water purifier using membranes, ion exchange resins and electricity to remove ionic, organic and suspended impurities from water to produce high quality, pure water. Supply water is pre-treated by directing it first into a sediment pre-filter module, a softener module and a sediment removal and dechlorination module. The pre-treated water is supplied to a reverse osmosis module which separates the water into two streams (a purified water stream and a concentrate stream) by collecting fluids from...

A pressureless electric water heater for domestic use having a cylindrical double-walled tank for holding a quantity of a heat transfer liquid such as water. Cold water enters a copper coil immersed in the heat transfer liquid. The heat transfer liquid is heated by an electric heating element that extends down a double-walled top. The inner walls and the outer walls of the tank and the upper and lower walls of the top may be spaced apart using any convenient spacing distance, in order to accommo...