Patents by Inventor James B. Shahan

James B. Shahan 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).

  • Heavy duty shackle
    Patent number: 4079584
    Abstract: A heavy duty shackle for use under great loads, such as in anchor lines. The shackle is formed from a cylindrical bar rod by shaping the ends to a reduced diameter, and forging the central portion into a flattened shape having the cross-section of a wide shallow U shape. The bottom surface of the central section is in the form of a portion of a circular cylinder. The ends of the bar are flattened and a central opening is forged and based for a pin. The formed bar is then bent in the form of a bow to provide an eye for the shackle, with two parallel ears spaced a selected distance apart.
    Type: Grant
    Filed: November 5, 1976
    Date of Patent: March 21, 1978
    Assignee: American Hoist & Derrick Company
    Inventor: James B. Shahan
  • Heavy duty shackle
    Patent number: RE34046
    Abstract: A heavy duty shackle for use under great loads, such as in anchor lines. The shackle is formed from a cylindrical bar rod by shaping the ends to a reduced diameter, and forging the central portion into a flattened shape having the cross-section of a wide shallow U shape. The bottom surface of the central section is in the form of a portion of a circular cylinder. The ends of the bar are flattened and a central opening is forged and based for a pin. The formed bar is then bent in the form of a bow to provide an eye for the shackle, with two parallel ears spaced a selected distance apart.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: September 1, 1992
    Assignee: American Hoist and Derrick Company
    Inventor: James B. Shahan