Patents by Inventor Claus C. Hansen

Claus C. Hansen 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: 4280716
    Abstract: In a foldable wheel chair supporting frames for a back, a seat, a pair of back wheels and a pair of front wheels are mutually pivotally connected by means of pivot assemblies positioned at the seat-back junction and comprising a blocking mechanism which is deactuated for releasing the pivotal connection between the supporting frames by turning the seat in a direction of a predetermined reduction of the angular separation between the seat and the back. Each pivot assembly may comprise a pivot pin secured to one supporting frame, and pivot cams secured to the other supporting frames together with an interlocking cam positioned between two of said pivot cams.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: July 28, 1981
    Assignee: E.C.-Hospitalsinventor A/S
    Inventors: Ebbe Vonsbaek, Claus C. Hansen, Lene Munthe