Patents Assigned to Cal W. Hay
  • Patent number: 4334794
    Abstract: The disclosure involves a self-sharpening pencil comprising a hollow housing having an integral self-contained non-rotatable fixed sharpener therein for a lead adapted to be linearly projected therethrough for filing the said lead by manually reciprocable lead carrier means.The lead is adapted to be linearly guided by means located within the housing and a reservoir or collection chamber is provided for filings within said housing.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: June 15, 1982
    Assignees: Cal W. Hay, Frederick Mann
    Inventor: William W. Rader