Patents by Inventor Jakob Sigle

Jakob Sigle 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: 4317293
    Abstract: The invention relates to a foot-supporting insole of which the front bounding line (24) extends in front of the ball (28) of the little toe at the outside of the foot and behind the ball (27) of the big toe at the inside of the foot. To enable such an insole to be used in all conventionally marketed shoes and to ensure that correct adaptation to the foot of the wearer will not be necessary, it is suggested to make the insole (2) of resiliently elastic material of substantially constant thickness and to construct it so that it is curved upwardly at the inside (3) of the foot, the stiffness of the insole (2) at least at the outside zone of the foot being so high that the foot rotatingly rolls towards the big toe during walking. Preferably, the length of the insole (2) at the inside of the foot corresponds to a size which is several sizes smaller than the measurement corresponding to the length at the outside of the foot.
    Type: Grant
    Filed: February 22, 1980
    Date of Patent: March 2, 1982
    Inventors: Rolf Sigle, Jakob Sigle
  • Patent number: 4240214
    Abstract: To improve the walking motion of the foot in the area of the big toe, a foot-supporting sole features a rigid section which, in the area of the little toe extends further forward than in the area of the hallux ball.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: December 23, 1980
    Inventors: Rolf Sigle, Jakob Sigle