Patents by Inventor Abdullah Ahmad Al-Hashash

Abdullah Ahmad Al-Hashash has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Water supply system
    Patent number: 7832466
    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.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: November 16, 2010
    Inventor: Abdullah Ahmad Al-Hashash
  • WATER SUPPLY SYSTEM
    Publication number: 20080120986
    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.
    Type: Application
    Filed: November 29, 2006
    Publication date: May 29, 2008
    Inventor: Abdullah Ahmad Al-Hashash