Patents by Inventor Philip W. Foster

Philip W. Foster 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).

  • Patent number: 5623998
    Abstract: A harrow includes a series of sleeves each having a plurality of teeth and telescoped non-rotatably over a rod which is rotatably journaled by laterally spaced bearing assemblies supported by mounting arms which, in turn, are attached to a tool bar. The bearing assemblies include an outer bearing and a generally cylindrically-shaped collar having a circular outer perimeter and a split extending longitudinally along the collar. The collar defines an inner perimeter disposed to receive the elongated rod. At least one radially directed pilot hole for receiving a set screw is formed through each collar. A set screw is threaded through the pilot hole and may be rotatably advanced therein to abut the elongated rod. Reactionary force from the abutment expands the collar at the split to positively engage the outer perimeter of the collar with the outer bearing.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: April 29, 1997
    Assignee: Farmers' Factory Co.
    Inventor: Philip W. Foster