Patents Assigned to Invacre Corp.
  • Obstacle traversing wheelchair
    Patent number: 7219755
    Abstract: The present invention provides a curb-climbing wheelchair having pivotal arm assemblies. The pivotal arm assemblies include at least one front caster and have the ability to rotate or pivot. The pivot arms rotate or pivot in response to moments generated by accelerating or decelerating the wheelchair thereby raising or lowering the front caster(s) through the rotational movement of the pivot arms. By raising or lowering the front caster(s) in such a manner, curb-like obstacles can be traversed in a low-impact manner.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: May 22, 2007
    Assignee: Invacre Corp.
    Inventors: Gerold Goertzen, William A. Null, Jr.