Patents by Inventor Michael C. Shepherd

Michael C. Shepherd 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).

  • Valve arrangement, liquid filters, filter assemblies, and method
    Patent number: 11975278
    Abstract: A valve arrangement includes a valve shaft having a fluid flow bore, and valve gear projections or teeth projecting from the valve shaft, constructed and arranged to receive a force to rotate the valve shaft. The valve arrangement can be used in a filter assembly having cartridge projections such as gear teeth to mesh with the teeth on the valve gear.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: May 7, 2024
    Assignee: Donaldson Company, Inc.
    Inventors: Kurt B. Joscher, Mark C. Shepherd, Brent T. Harrold, Michael S. Courneya
  • Roof tile
    Patent number: 4890432
    Abstract: An interlocking roof tile is formed as a single integral member having at least two tile elements lying in different planes so that a step is formed between them, the tile elements being offset from each other both along a row direction and transverse to a row direction so that one tile element will lie in a row above and laterally offset from the other.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: January 2, 1990
    Assignee: Hopedelta Limited
    Inventor: Michael C. Shepherd