Patents Assigned to Ernest M. Burgess
  • Prosthetic ankle
    Patent number: 4792340
    Abstract: A prosthetic ankle having an elongated tubular shank, which provides bending. The shank is part of a monolithic ankle with the lower portion being a flexure joint. The flexure joint has a flexing post defined by an entrapment kerf. The entrapment kerf allows relatively free movement of flexure within defined limits in axial rotation, dorsi and plantar flexion, inversion and eversion. The kerf surfaces provide resistance to axial rotation during dorsiflexion.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: December 20, 1988
    Assignee: Ernest M. Burgess
    Inventors: Alan L. Aulie, Ernest M. Burgess