Patents by Inventor Dirk Allera

Dirk Allera 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).

  • Covering device for roller skates
    Patent number: 5988682
    Abstract: A covering device for rollers of roller skates includes a cover element for positioning underneath rollers of a roller skate. A fastening element is connected to the cover element for fastening the cover element to the roller skate. The cover element includes a ground contact surface extending, when the covering device is attached to the roller skate, in a direction of travel of the rollers of the roller skates. It has an arc shape in the direction of travel to allow an ergonomic foot movement of the user of the roller skate.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: November 23, 1999
    Inventor: Dirk Allera