Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Abdullah Ahmad Al-Hashash0
Date of Patent
November 16, 2010
0Patent Application Number
115646680
Date Filed
November 29, 2006
0Patent Primary Examiner
Patent abstract
A water supply system includes a main water tank and a sub-tank of smaller dimensions than the main tank for supplying hot and cold water for household use. The sub-tank is surrounded by a tubular coil of refrigerant in contact with the sub-tank, a layer of insulation and an outer wall for maintaining the insulation in place and protecting the tubular coil and sub-tank from being damaged. A water heater is disposed in or below a lower part of the tank and a three-way switch is provided for selecting heating or refrigeration during different seasons of the year.
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