Patents by Inventor Margaret Karl

Margaret Karl 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).

  • Patent number: 8082682
    Abstract: A point shoe insole for a ballet slipper with a two layered co-molded plastic sheet having a top layer made of semi-rigid plastic and a bottom layer made of four of rigid plastic members. The top sheet has a plurality of horizontally and downwardly facing ribs. The first and second downwardly facing ribs fit tightly between the first, second and third rigid plastic members of the bottom sheet. A third set downwardly facing ribs are located between the third rigid portion and the forth rigid portion. The area above the first and second downwardly facing ribs form hinges that allow the first, second and third rigid members to flex in an upward direction during the progression of movement of a user's foot between a flat plane and on pointe, but does not allow the first, second and third rigid members to flex in the opposite direction when the user's foot is on pointe.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: December 27, 2011
    Inventors: Margaret Karl, Garen P. Scribner
  • Publication number: 20100186257
    Abstract: A point shoe insole for a ballet slipper with a two layered co-molded plastic sheet having a top layer made of semi-rigid plastic and a bottom layer made of four of rigid plastic members. The top sheet has a plurality of horizontally and downwardly facing ribs. The first and second downwardly facing ribs fit tightly between the first, second and third rigid plastic members of the bottom sheet. A third set downwardly facing ribs are located between the third rigid portion and the forth rigid portion. The area above the first and second downwardly facing ribs form hinges that allow the first, second and third rigid members to flex in an upward direction during the progression of movement of a user's foot between a flat plane and on pointe, but does not allow the first, second and third rigid members to flex in the opposite direction when the user's foot is on pointe.
    Type: Application
    Filed: January 29, 2009
    Publication date: July 29, 2010
    Inventors: Margaret Karl, Garen P. Scribner