Patents by Inventor Mark W. Campbell

Mark W. Campbell 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).

  • Coned-disc spring device, spring assembly, and methods of making the same
    Patent number: 9976617
    Abstract: A coned-disc spring device, spring assembly, methods of making the same, and methods of assembling a spring system are disclosed. Such a device includes a first end defining a first opening and a second end defining a second opening, wherein the diameter of the second opening is larger than the diameter of the first opening. The device also includes a lip portion at the second end of the device adjacent to and at least partially encircling the second opening and protruding substantially perpendicular to the plane defined by the second opening such that when a portion of a second spring member having a first groove portion is received within the second opening, the first lip portion is received within the first groove portion to optimally align the second spring member.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: May 22, 2018
    Assignee: MW Industries, Inc.
    Inventors: Mark W. Campbell, Kelly L. Falls, Donald E. Paul
  • THREADED FASTENER LOCK
    Publication number: 20140252705
    Abstract: A coned-disc spring device, spring assembly, methods of making the same, and methods of assembling a spring system are disclosed. Such a device includes a first end defining a first opening and a second end defining a second opening, wherein the diameter of the second opening is larger than the diameter of the first opening. The device also includes a lip portion at the second end of the device adjacent to and at least partially encircling the second opening and protruding substantially perpendicular to the plane defined by the second opening such that when a portion of a second spring member having a first groove portion is received within the second opening, the first lip portion is received within the first groove portion to optimally align the second spring member.
    Type: Application
    Filed: July 17, 2012
    Publication date: September 11, 2014
    Inventors: Mark W. Campbell, Kelly L. Falls, Donald E. Paul