Patents by Inventor Stanley A. Haswell

Stanley A. Haswell 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).

  • Means for making double groove pulleys
    Patent number: 3953995
    Abstract: An apparatus is provided for forming a pulley having at least two grooves from a cup-shaped blank having an axially extending sidewall. The blank is crushed between axially closing dies and as the blank is being crushed, at least two rolls are translated radially into contact with the outer surface of the blank sidewall while the blank is rotated to form at least two annular pulley grooves in the sidewall of the blank. During such translation, a forming roll positioned between the axially closing dies and within the cup is radially shifted away from the longitudinal axis of the cup and into contact with the inner sidewall thereof to form a land between pulley groove pairs.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: May 4, 1976
    Inventors: John W. Haswell, Stanley A. Haswell