Patents by Inventor Stephen M. Wightman

Stephen M. Wightman 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).

  • Patent number: 6785943
    Abstract: An indexing tool turret assembly is disclosed including a rotatable indexable turret tooling plate having mounted thereon stationary as well as live tooling. A single drive motor is utilized in order to perform indexing as well as to drive the live tooling. A plurality of live tools can be simultaneously mounted on the turret tooling plate and the single drive motor is selectively engageable with each of the live tools so that only one of the plurality of live tools is driven at a given time. The selective live tool drive train includes an axially movable drive shaft and bevel drive gear for selectively engaging the driven bevel gear of the desired live tool. The axially movable shaft assembly includes a mechanism for adjusting the backlash between the driving and driven bevel gears when these gears are engaged with one another.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: September 7, 2004
    Assignee: Hardinge, Inc.
    Inventors: Terrence Sheehan, Stephen M. Wightman, Jacek Mierzejewski, Gary Comstock
  • Publication number: 20010039706
    Abstract: An indexing tool turret assembly is disclosed including a rotatable indexable turret tooling plate having mounted thereon stationary as well as live tooling. A single drive motor is utilized in order to perform indexing as well as to drive the live tooling. A plurality of live tools can be simultaneously mounted on the turret tooling plate and the single drive motor is selectively engageable with each of the live tools so that only one of the plurality of live tools is driven at a given time. The selective live tool drive train includes an axially movable drive shaft and bevel drive gear for selectively engaging the driven bevel gear of the desired live tool. The axially movable shaft assembly includes a mechanism for adjusting the backlash between the driving and driven bevel gears when these gears are engaged with one another.
    Type: Application
    Filed: September 2, 1999
    Publication date: November 15, 2001
    Applicant: sheehan
    Inventors: TERRENCE SHEEHAN, STEPHEN M. WIGHTMAN, JACEK MIERZEJEWSKI, GARY COMSTOCK