Patents Assigned to Ronald Kestenbaum
  • Roller skate construction having pivotal heel
    Patent number: 4303253
    Abstract: A roller type skate construction having a rear wheel assembly comprising a fixed platform having a lower horizontal surface from which depend a plurality of casters, each having a horizontal axis of rotation and at least some having a vertical axis of rotation in offset relation, whereby a skater may execute a turn while standing in place by pivoting about an axis through the ball of the foot, the heel portion moving laterally to describe an arc about said axis.
    Type: Grant
    Filed: September 26, 1980
    Date of Patent: December 1, 1981
    Assignee: Ronald Kestenbaum
    Inventor: John Rottenkolber