Patents by Inventor Keith E. Nuttall

Keith E. Nuttall 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).

  • Spin-welding apparatus
    Patent number: 4743331
    Abstract: Apparatus for spin-welding comprises a spin welding machine having a spin welding head, a ram assembly, and a feed mechanism; the ram assembly is driven from a shaft and the feed mechanism comprises a rotating turret mounted on a shaft which is driven from the shaft via a Geneva mechanism. The spin welding head is driven by a low inertia DC servo motor operated by a programmable logic controller and timed from a switch unit driven off the shaft.
    Type: Grant
    Filed: May 16, 1986
    Date of Patent: May 10, 1988
    Assignee: Metal box, p.l.c.
    Inventors: Keith E. Nuttall, Kenneth R. Clark
  • Method of and apparatus for spin-welding
    Patent number: 4741788
    Abstract: During spin-welding of an end ring to a container body, the weld area is subjected to a radial pressure by means of a wire cable tourniquet under the action of a pneumatic cylinder. The interference fit between the ring and body is measured by reference to the torque required for their slow speed relative rotation or to the axial force required for their assembly and, according to the measured interference fit, the radial pressure applied by the tourniquet during welding is controlled.
    Type: Grant
    Filed: May 16, 1986
    Date of Patent: May 3, 1988
    Assignee: Metal Box p.l.c.
    Inventors: Kenneth R. Clark, Malcolm G. Collins, Keith E. Nuttall, Suresh G. Panvalkar