Patents Assigned to Roger C. Lam
  • Patent number: 4422658
    Abstract: A wheeled carrier (10) which includes a substantially planar back frame (20) and a substantially planar base frame (34) which is rotationally coupled to the back frame (20). The base frame (34) extends in a substantially horizontal plane and the back frame (20) may be rotationally displaced from a substantially vertical plane to a substantially horizontal plane. The wheeled carrier (10) further includes a plurality of wheel members (54, 54', 56, 56') which are rotatably coupled to the base frame (34) for rolling the wheeled carrier (10) on a base surface (12). A containment mechanism (62) is provided and is releasably coupled to the back frame (20) and the base frame (34) for preventing a user from falling external to the wheeled carrier (10).
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: December 27, 1983
    Assignee: Roger C. Lam
    Inventor: Steven F. Hilliard