Patents by Inventor Scott W. Quigley

Scott W. Quigley 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).

  • Self-aligning lead-in chamfer for a valve seat
    Patent number: 5267723
    Abstract: Lead-in of a valve seat member being pressed into a valve body bore has larger angle initial lead-in portion followed by smaller angle transition lead-in portion leading to press-fit outside diameter. This prevents a maximally misaligned valve seat member from shaving a silver as the lead-in passes across the shoulder of a counterbore at the entrance of the press-fit inside diameter of the bore.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: December 7, 1993
    Assignee: Siemens Automotive L.P.
    Inventors: Stephen F. Shea, Scott W. Quigley