Powder Patents (Class 126/269)
  • Material and method for fast generation of hydrogen gas and steam
    Patent number: 5143047
    Abstract: A high power pulse of electrical current causes a metal conductor to expl and initiate a reaction between an aluminum or aluminum alloy powder and water which generates hydrogen gas at a high temperature and pressure. The reaction mixture is released into a second larger chamber equipped with heat exchanger which extracts useful heat energy and cools down the reaction mixture. The hydrogen gas is then separated from the solid metal oxide byproducts in the cooled reaction mixture.
    Type: Grant
    Filed: June 20, 1991
    Date of Patent: September 1, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Woodrow W. Lee
  • Heat-generating material for portable hair curler
    Patent number: 4955360
    Abstract: A metallic heat-generating agent comprising as a main component iron powder and water generating steam by an oxidation reaction caused by contact with air is contained in an air-permeable bag as a heat-generating material for a portable hair curler. A portable hair curler is constructed and operated by exchangeably inserting this metallic heat-generating material in a hair-winding guide cylinder and dismountably attaching a cover after winding the hair onto the hair-winding guide cylinder.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: September 11, 1990
    Assignees: Nippon Steel Corporation, Finetec Co., Ltd.
    Inventors: Yoshihiro Ogawa, Hiroo Takahashi, Yoshinori Kikuchi