Patents by Inventor Barry Hyman

Barry Hyman 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).

  • Shifting mechanism and quick release for multispeed wheelchair
    Patent number: 5482305
    Abstract: A new wheel assembly (14), with a gear reducing hub (22), and including a new hand wheel assembly (30) mounted on a hand wheel hub (36) for a manual multispeed wheelchair (10), that has an improved shifting mechanism that allows easy shifting at user's hand level. A shifter (76) is rotated, which axially moves a shift member (52) to couple with drive chock openings (46) in direct drive or a planetary gear system (58) for low gear operation. The new wheel assembly (14) also includes a quick disconnect mechanism for easy change of the wheel assembly (14) from the wheelchair (10) without tools. A torque collar (144), on the inboard side of the hub (22), couples with a sleeve assembly (136) on the wheelchair (10) and allows torque to transfer directly from hub (22) to wheelchair (10).
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: January 9, 1996
    Assignee: University of Washington
    Inventors: Benjamin L. Jeffries, Barry Hyman, Matthew A. Shepherd, Steven Nguyen, Jaures F. Cleofe, Daehwan D. Kim