Patents by Inventor Stephen F. Cowap

Stephen F. Cowap 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).

  • Self orienting hanging windmill
    Patent number: 10247172
    Abstract: A hanging windmill has a wind turbine and a generator mounted on an airframe supported by a hanger at the center of gravity of the assembly. A stop is provided for preventing the tipping of the airframe on the hanger beyond a point where the blades of the wind turbine strike the hanger.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: April 2, 2019
    Inventor: Stephen F. Cowap
  • SELF ORIENTING HANGING WINDMILL
    Publication number: 20170030334
    Abstract: A hanging windmill has a wind turbine and a generator mounted on an airframe supported by a hanger at the center of gravity of the assembly. A stop is provided for preventing the tipping of the airframe on the hanger beyond a point where the blades of the wind turbine strike the hanger.
    Type: Application
    Filed: October 12, 2016
    Publication date: February 2, 2017
    Inventor: STEPHEN F. COWAP
  • Self orienting vertical axis wind turbine
    Patent number: 8410627
    Abstract: A vertical axis wind turbine includes a propeller assembly formed from a hub with downwardly and outwardly depending blades. The propeller assembly has a polygonal base with the blades forming the bases of a triangular surface meeting at a common vertex. The hub is mounted on a spindle which is connected to a shaft which is rotatable. A bendable joint is provided between the spindle and the shaft such that the hub and blades appear to face into the wind and spin. A lower end of the rotatable shaft is connected to a means for utilizing the rotation of the shaft. The angle that the blades make to the hub may be changed such that the blade swept area presented to the wind may be regulated to either speed up or slow down rotation. Struts may be provided between the blades such that longer blades may be used.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: April 2, 2013
    Inventor: Stephen F. Cowap
  • SELF ORIENTING VERTICAL AXIS WIND TURBINE
    Publication number: 20110101694
    Abstract: A vertical axis wind turbine includes a propeller assembly formed from a hub with downwardly and outwardly depending blades. The propeller assembly has a polygonal base with the blades forming the bases of a triangular surface meeting at a common vertex. The hub is mounted on a spindle which is connected to a shaft which is rotatable. A bendable joint is provided between the spindle and the shaft such that the hub and blades appear to face into the wind and spin. A lower end of the rotatable shaft is connected to a means for utilizing the rotation of the shaft. The angle that the blades make to the hub may be changed such that the blade swept area presented to the wind may be regulated to either speed up or slow down rotation. Struts may be provided between the blades such that longer blades may be used.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 5, 2011
    Inventor: Stephen F. Cowap
  • Process for removing organic impurities while melting mineral compositions
    Patent number: 6133177
    Abstract: A process for the preparation of molten mineral compositions wherein organic impurities are removed by reaction with oxygen introduced via the decomposition of calcium peroxide.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: October 17, 2000
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventor: Stephen F. Cowap