Patents by Inventor Holger Holmgren

Holger Holmgren 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 testing construction units within the furniture field with associated environments in their normally used assembled state and an apparatus to be used by the method
    Patent number: 4583392
    Abstract: A method of and apparatus for reproducibly testing the resistance to wear and change in appearance as well as the soil resistance of construction units (4) in full size within the furniture field with associated environments, the construction unit (4) or parts thereof in its full construction being positioned secured on the inner side of a rotatable large drum (1) and subjected to stresses from various stress members (5) located in the drum (1). These stress members are activated by the rotation of the drum. The stress members (5) may for instance be leather balls (5) filled with water or sand and optionally provided with a facing of wearing members (15) of textile materials or another wearing material such as for instance emery cloth, whereafter the number of rotations of the drum are registered and compared with changes arising through natural use.
    Type: Grant
    Filed: May 2, 1984
    Date of Patent: April 22, 1986
    Assignee: Inter-Ikea AG
    Inventors: Holger Holmgren, Bo Wadling