Patents by Inventor Charles P. Mitchell

Charles P. Mitchell 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).

  • Method of pneumatically edge wrapping a substrate
    Patent number: 5318647
    Abstract: A controlled bladder wrap tool system and method are disclosed for edge wrapping a substrate in a tool with consistent process control. An expandable bladder or bladder diaphragm is mounted in the tool adjacent a cavity where it expands when inflated to fill the cavity and to bend, fold or wrap an overhanging portion of pliable material onto a substrate which are mounted in the tool.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: June 7, 1994
    Assignees: Kelly M. Mitchell, Carie A. Mitchell
    Inventor: Charles P. Mitchell
  • Controlled bladder wrap tool system
    Patent number: 5139604
    Abstract: A controlled bladder wrap tool system and method are disclosed for edge wrapping a substrate in a tool with consistent process control. An expandable bladder or bladder diaphragm is mounted in the tool adjacent a cavity where it expands when inflated to fill the cavity and to bend, fold or wrap an overhanging portion of pliable material onto a substrate which are mounted in the tool.
    Type: Grant
    Filed: May 9, 1990
    Date of Patent: August 18, 1992
    Inventor: Charles P. Mitchell