Patents by Inventor David V. Sykes

David V. Sykes 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).

  • Hoist lock block
    Patent number: 8613427
    Abstract: A hoist assembly for overhead lifting including an upwardly extending attachment member, a downwardly depending shank coupled to the attachment member and having a polygonal cross sectional shape, a hoist body coupled to the downwardly depending shank, and a plate positioned between the upwardly extending attachment member and the hoist body, that defines a first circular aperture that matingly receives the polygonal shank and a second polygonal aperture laterally spaced from the first circular aperture. The plate is moveable between a first position, in which the polygonal shank extends into the first circular aperture, and a second position, in which the polygonal shank extends into the second polygonal aperture. Rotation of the attachment member with respect to the plate is permitted when the plate is in the first position, and rotation of the attachment member with respect to the plate is inhibited when the plate is in the second position.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: December 24, 2013
    Assignee: Ingersoll Rand Company
    Inventors: Scott L. Lawson, Richard L. Caviness, David V. Sykes, David A. Eichenberger
  • HOIST LOCK BLOCK
    Publication number: 20120187356
    Abstract: A hoist assembly for overhead lifting including an upwardly extending attachment member, a downwardly depending shank coupled to the attachment member and having a polygonal cross sectional shape, a hoist body coupled to the downwardly depending shank, and a plate positioned between the upwardly extending attachment member and the hoist body, that defines a first circular aperture that matingly receives the polygonal shank and a second polygonal aperture laterally spaced from the first circular aperture. The plate is moveable between a first position, in which the polygonal shank extends into the first circular aperture, and a second position, in which the polygonal shank extends into the second polygonal aperture. Rotation of the attachment member with respect to the plate is permitted when the plate is in the first position, and rotation of the attachment member with respect to the plate is inhibited when the plate is in the second position.
    Type: Application
    Filed: October 15, 2009
    Publication date: July 26, 2012
    Applicant: INGERSOLL-RAND COMPANY
    Inventors: Scott L. Lawson, Richard L. Caviness, David V. Sykes, David A. Eichenberger