Patents Represented by Attorney, Agent or Law Firm Chet Bonner
  • Motorized wheelchairs
    Patent number: 6615937
    Abstract: A motorized wheelchair is advantageously provided with a rate-of-turn feedback sensor and with forward/reverse motion, lateral motion, and vertical motion acceleration feedback sensors that are integrated into a closed-loop wheelchair servo control system to differentially control the rotational speed of wheelchair opposed motor-driven wheels and thereby obtain improved wheelchair motion stability through reduction/elimination of likely wheelchair spin-out and wheelchair tipping during wheelchair operation.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: September 9, 2003
    Assignee: Invacare Corporation
    Inventors: Joseph B. Richey, II, Theodore D. Wakefield, II