Patents by Inventor John S. Duncan

John S. Duncan 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).

  • Vise with jaw control
    Publication number: 20030214089
    Abstract: A vise (10) having a control aperture (74) at an accessible end (54) of a screw rod (50) and extending along the rotational axis (52) thereof. The aperture (74) is sized and shaped to accept the anvil (72) of a drive mechanism (70) so that upon rotation of the anvil (72) along its torque axis (80), screw rod (50) rotates about its rotational axis (52). At least one of a pair of jaws (18, 20) is operatively associated with screw rod (50) to thereby vary the spacing (34) therebetween as screw rod (50) rotates under control of the anvil (72).
    Type: Application
    Filed: June 18, 2003
    Publication date: November 20, 2003
    Applicant: Duncan and Associates
    Inventor: John S. Duncan
  • Vise with jaw control
    Patent number: 6595508
    Abstract: A vise (10) having a control aperture (74) at an accessible end (54) of a screw rod (50) and extending along the rotational axis (52) thereof. The aperture (74) is sized and shaped to accept the anvil (72) of a drive mechanism (70) so that upon rotation of the anvil (72) along its torque axis (80), screw rod (50) rotates about its rotational axis (52). At least one of a pair of jaws (18, 20) is operatively associated with screw rod (50) to thereby vary the spacing (34) therebetween as screw rod (50) rotates under control of the anvil (72).
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: July 22, 2003
    Assignee: Duncan & Associates
    Inventor: John S. Duncan
  • Vise with jaw control
    Publication number: 20020185800
    Abstract: A vise (10) having a control aperture (74) at an accessible end (54) of a screw rod (50) and extending along the rotational axis (52) thereof. The aperture (74) is sized and shaped to accept the anvil (72) of a drive mechanism (70) so that upon rotation of the anvil (72) along its torque axis (80), screw rod (50) rotates about its rotational axis (52). At least one of a pair of jaws (18, 20) is operatively associated with screw rod (50) to thereby vary the spacing (34) therebetween as screw rod (50) rotates under control of the anvil (72).
    Type: Application
    Filed: June 11, 2001
    Publication date: December 12, 2002
    Applicant: Duncan and Associates
    Inventor: John S. Duncan