Patents by Inventor Michael L. Lentz

Michael L. Lentz 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).

  • Hydraulic fluid cooling system for pair of integrated hydrostatic transmissions
    Patent number: 8336306
    Abstract: A hydraulic fluid cooling system for a pair of integrated hydrostatic transmissions includes a common reservoir holding hydraulic fluid and having hydraulic lines connecting the common reservoir to each integrated hydrostatic transmission, a hydraulic fluid reservoir inside each integrated hydrostatic transmission, and a pump for pumping fluid from each transmission's hydraulic fluid reservoir to the other transmission. Hydraulic fluid lines link each transmission's hydraulic fluid reservoir to the other transmission. The system pumps hydraulic fluid from the sump or reservoir of each integrated hydrostatic transmission to the other transmission, providing the cooling capacity of a non-loaded transmission to cool hydraulic fluid for a fully loaded transmission.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: December 25, 2012
    Assignee: Deere & Company
    Inventors: James E. Hardzinski, Bryan D. Blauwet, Damon C. Green, Michael L. Lentz
  • HYDRAULIC FLUID COOLING SYSTEM FOR PAIR OF INTEGRATED HYDROSTATIC TRANSMISSIONS
    Publication number: 20100236235
    Abstract: A hydraulic fluid cooling system for a pair of integrated hydrostatic transmissions includes a common reservoir holding hydraulic fluid and having hydraulic lines connecting the common reservoir to each integrated hydrostatic transmission, a hydraulic fluid reservoir inside each integrated hydrostatic transmission, and a pump for pumping fluid from each transmission's hydraulic fluid reservoir to the other transmission. Hydraulic fluid lines link each transmission's hydraulic fluid reservoir to the other transmission. The system pumps hydraulic fluid from the sump or reservoir of each integrated hydrostatic transmission to the other transmission, providing the cooling capacity of a non-loaded transmission to cool hydraulic fluid for a fully loaded transmission.
    Type: Application
    Filed: March 17, 2009
    Publication date: September 23, 2010
    Inventors: James E. Hardzinski, Bryan D. Blauwet, Damon C. Green, Michael L. Lentz