Patents by Inventor Richard Rönngårdh

Richard Rönngårdh 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).

  • Wheelchair comprising wheel axle and hub
    Patent number: 9795523
    Abstract: The present disclosure relates to a wheelchair comprising a wheel axle (1) having a wheel axle end portion (9) and hub (3) having a central through-opening (11) arranged to receive the wheel axle end portion (9). The wheel axle end portion (9) has an external surface having three chamfered faces (3a, 3b), each chamfered face (3a, 3b) defining a planar surface, and the hub (3) has inner walls (13a, 13b, 13c) defining the central through-opening (11). The inner walls (13a, 13b, 13c) are arranged to engage with the chamfered faces (3a, 3b) of the wheel axle end portion (9) to prevent relative rotation between the hub (3) and the wheel axle (1).
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: October 24, 2017
    Assignee: PERMOBIL AB
    Inventors: Göran Holst, Richard Rönngårdh
  • WHEELCHAIR COMPRISING WHEEL AXLE AND HUB
    Publication number: 20170007478
    Abstract: The present disclosure relates to a wheelchair comprising a wheel axle (1) having a wheel axle end portion (9) and hub (3) having a central through-opening (11) arranged to receive the wheel axle end portion (9). The wheel axle end portion (9) has an external surface having three chamfered faces (3a, 3b), each chamfered face (3a, 3b) defining a planar surface, and the hub (3) has inner walls (13a, 13b, 13c) defining the central through-opening (11). The inner walls (13a, 13b, 13c) are arranged to engage with the chamfered faces (3a, 3b) of the wheel axle end portion (9) to prevent relative rotation between the hub (3) and the wheel axle (1).
    Type: Application
    Filed: July 5, 2016
    Publication date: January 12, 2017
    Inventors: Göran Holst, Richard Rönngårdh