Patents Assigned to Benjamin Cowan
  • Patent number: 5048893
    Abstract: A chair adapted to passively adjust itself to be in equilibrium with the user's body in relation to changes in the center of gravity and thigh inclination. The chair includes a post from which is provided, in one embodiment, a convex track on which a carriage is allowed to travel, and a seat pan is pivoted on the carriage for angle adjustment relative to the carriage. In another embodiment, a first concave track is provided on the top of the post with a carriage slidable in the concave track and a seat pan mounted for travel in a track on the carriage wherein the second concave track has a smaller radius than the first track.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: September 17, 1991
    Assignee: Benjamin Cowan
    Inventors: Benjamin Cowan, Marek Kmicikiewicz, Christopher J. Scrase, Bernard Shalinsky