Patents by Inventor David C. Tragna

David C. Tragna 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).

  • Fuel gauge for hydrogen storage media
    Patent number: 7254983
    Abstract: A hydrogen gas storage container has a canister with at least one outlet opening for charging and discharging gas, the canister enclosing a metal hydride capable of absorbing and desorbing hydrogen gas and a gauge for measuring the capacity of hydrogen remaining within the hydride material. To further permit distribution of the hydrogen throughout the hydride material, a porous matrix may be disposed within said metal hydride material for providing efficient distribution of hydrogen gas to said metal hydride material. The fuel gauge may further comprise subassemblies for determining the hydrogen capacity, each of which depends for operation on a different property of the metal hydride material.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: August 14, 2007
    Assignee: Hera USA Inc.
    Inventors: David H. DaCosta, P. Mark Golben, David C. Tragna
  • Fuel gauge for hydrogen storage media
    Patent number: 7237428
    Abstract: A hydrogen gas storage container has a canister with at least one outlet opening for charging and discharging gas, the canister enclosing a metal hydride capable of absorbing and desorbing hydrogen gas and a gauge for measuring the capacity of hydrogen remaining within the hydride material. To further permit distribution of the hydrogen throughout the hydride material, a porous matrix may be disposed within said metal hydride material for providing efficient distribution of hydrogen gas to said metal hydride material. The fuel gauge may further comprise subassemblies for determining the hydrogen capacity, each of which depends for operation on a different property of the metal hydride material.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: July 3, 2007
    Assignee: Hera USA, Inc.
    Inventors: David H. DaCosta, P. Mark Golben, David C. Tragna
  • Fuel gauge for hydrogen storage media
    Publication number: 20040200735
    Abstract: A hydrogen gas storage container has a canister with at least one outlet opening for charging and discharging gas, the canister enclosing a metal hydride capable of absorbing and desorbing hydrogen gas and a gauge for measuring the capacity of hydrogen remaining within the hydride material. To further permit distribution of the hydrogen throughout the hydride material, a porous matrix may be disposed within said metal hydride material for providing efficient distribution of hydrogen gas to said metal hydride material. The fuel gauge may further comprise subassemblies for determining the hydrogen capacity, each of which depends for operation on a different property of the metal hydride material.
    Type: Application
    Filed: April 28, 2004
    Publication date: October 14, 2004
    Inventors: David H. DaCosta, P. Mark Golben, David C Tragna
  • Fuel gauge for hydrogen storage media
    Publication number: 20030070487
    Abstract: A hydrogen gas storage container has a canister with at least one outlet opening for charging and discharging gas, the canister enclosing a metal hydride capable of absorbing and desorbing hydrogen gas and a gauge for measuring the capacity of hydrogen remaining within the hydride material. To further permit distribution of the hydrogen throughout the hydride material, a porous matrix may be disposed within said metal hydride material for providing efficient distribution of hydrogen gas to said metal hydride material. The fuel gauge may further comprise subassemblies for determining the hydrogen capacity, each of which depends for operation on a different property of the metal hydride material.
    Type: Application
    Filed: October 16, 2001
    Publication date: April 17, 2003
    Inventors: David H. DaCosta, P. Mark Golben, David C. Tragna