Patents by Inventor Michael J. Cliff

Michael J. Cliff 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).

  • Patent number: 11365803
    Abstract: A hydraulic device for a work vehicle includes a device body, a plug, and a filler insert. The device body includes a wall structure between surfaces defining internal passages including an access passage having a first diameter extending from an access opening in the device body to a hydraulic fluid passage extending through the wall structure from an entry opening in a first surface to an exit opening in a second surface to deliver hydraulic fluid through the wall structure. A plug is mounted to the device body to close the access opening. A filler insert is proximate the plug and has a shank having a circular cross-section of a second diameter that is less than the first diameter so as to be decoupled from the inner wall surface of the access passage. An annular space around the shank in the access passage allows the hydraulic fluid to encircle at least a part of the shank of the filler insert.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: June 21, 2022
    Assignee: DEERE & COMPANY
    Inventor: Michael J. Cliff
  • Patent number: 11359352
    Abstract: A hydraulic system for a work vehicle has a first hydraulic circuit at a first nominal pressure and a second hydraulic circuit at a second nominal pressure different than the first nominal pressure. A dual-chamber hydraulic reservoir includes a first tank associated with the first hydraulic circuit and defining a first opening and a second tank associated with the second hydraulic circuit and defining a second opening. An exchange system has a particulate filter disposed within an exchange path between the first opening of the first tank and the second opening of the second tank. The exchange system is configured to resupply the first tank with hydraulic fluid from the second tank.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: June 14, 2022
    Assignee: DEERE & COMPANY
    Inventors: Steven R. Fliearman, Michael J. Cliff
  • Publication number: 20220136530
    Abstract: Systems, methods, and apparatuses for operating a machine using energy stored in a compressed gas are disclosed. Energy stored in the compressed gas may be used to pressurize a fluid, such as transmission fluid, and the pressurized fluid may be used to effectuate an operation of the machine, such as a transmission, and the operation of the machine may involve shifting of the transmission. The gas may be compressed by a first fluid using a second fluid, and the two fluids are be prevented from being mixed together.
    Type: Application
    Filed: November 3, 2020
    Publication date: May 5, 2022
    Inventors: Michael J. Cliff, Steven R. Fliearman
  • Publication number: 20220064907
    Abstract: A hydraulic system for a work vehicle has a first hydraulic circuit at a first nominal pressure and a second hydraulic circuit at a second nominal pressure different than the first nominal pressure. A dual-chamber hydraulic reservoir includes a first tank associated with the first hydraulic circuit and defining a first opening and a second tank associated with the second hydraulic circuit and defining a second opening. An exchange system has a particulate filter disposed within an exchange path between the first opening of the first tank and the second opening of the second tank. The exchange system is configured to resupply the first tank with hydraulic fluid from the second tank.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 3, 2022
    Inventors: Steven R. Fliearman, Michael J. Cliff
  • Publication number: 20220025614
    Abstract: A hydraulic supply system provides hydraulic power to functional systems of a work vehicle and includes first and second hydraulic circuits. The first hydraulic circuit includes a first fluid pump operable to generate a first hydraulic fluid, a pressure storage reservoir coupled with the first fluid pump, and a first port coupled with the first fluid pump and with the pressure storage reservoir operable to store a reserve hydraulic fluid. The first port delivers a boost hydraulic fluid from the first circuit for use by the work vehicle to operate a first functional system of the work vehicle. The second hydraulic circuit includes a second fluid pump that generates a second hydraulic fluid, and a second port coupled with the second fluid pump delivers the second hydraulic fluid from the second hydraulic circuit for use by the work vehicle to operate a second functional system of the work vehicle.
    Type: Application
    Filed: July 21, 2020
    Publication date: January 27, 2022
    Applicant: Deere & Company
    Inventors: Michael J. Cliff, Steven R. Fliearman
  • Publication number: 20220025969
    Abstract: A hydraulic device for a work vehicle includes a device body, a plug, and a filler insert. The device body includes a wall structure between surfaces defining internal passages including an access passage having a first diameter extending from an access opening in the device body to a hydraulic fluid passage extending through the wall structure from an entry opening in a first surface to an exit opening in a second surface to deliver hydraulic fluid through the wall structure. A plug is mounted to the device body to close the access opening. A filler insert is proximate the plug and has a shank having a circular cross-section of a second diameter that is less than the first diameter so as to be decoupled from the inner wall surface of the access passage. An annular space around the shank in the access passage allows the hydraulic fluid to encircle at least a part of the shank of the filler insert.
    Type: Application
    Filed: July 21, 2020
    Publication date: January 27, 2022
    Inventor: Michael J. Cliff
  • Patent number: 11230822
    Abstract: A hydraulic supply system provides hydraulic power to functional systems of a work vehicle and includes first and second hydraulic circuits. The first hydraulic circuit includes a first fluid pump operable to generate a first hydraulic fluid, a pressure storage reservoir coupled with the first fluid pump, and a first port coupled with the first fluid pump and with the pressure storage reservoir operable to store a reserve hydraulic fluid. The first port delivers a boost hydraulic fluid from the first circuit for use by the work vehicle to operate a first functional system of the work vehicle. The second hydraulic circuit includes a second fluid pump that generates a second hydraulic fluid, and a second port coupled with the second fluid pump delivers the second hydraulic fluid from the second hydraulic circuit for use by the work vehicle to operate a second functional system of the work vehicle.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: January 25, 2022
    Assignee: Deere & Company
    Inventors: Michael J. Cliff, Steven R. Fliearman
  • Publication number: 20210404550
    Abstract: Systems, methods, and apparatuses for operating a machine using energy stored in a compress gas are disclosed. Energy stored in the compressed gas may be used to pressurize a fluid, such as transmission fluid, and the pressurized fluid may be used to effectuate an operation of the machine, such as a transmission, and the operation of the machine may involve shifting of a transmission. The gas may be compressed with another fluid that is different from the fluid used to operate the machine, and the two fluid may be prevented from being mixed together.
    Type: Application
    Filed: June 25, 2020
    Publication date: December 30, 2021
    Inventors: MICHAEL J. CLIFF, BENJAMIN K. DOLLINS
  • Patent number: 11028917
    Abstract: A work equipment transmission includes a gear, a gearbox, and a baffle. The gearbox housing contains the gear within an internal cavity that defines a sump and is defined by a first housing body having a first baffle-retaining surface and an outlet opening and a second housing body having a second baffle-retaining surface. The baffle has a shroud wall defining a peripheral lip for engagement with the first baffle-retaining surface, an annular collar having an annular collar lip for engagement with the second baffle-retaining surface, and an end wall. The baffle is mounted within the gearbox housing, the end wall extending proximate the gear and the shroud wall extending at least partially around the gear. The baffle is mounted by a clamping force between the first housing body and the second housing body.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: June 8, 2021
    Assignee: DEERE & COMPANY
    Inventors: Marc David Chapman, Michael J. Cliff
  • Publication number: 20210102619
    Abstract: A directing member and a method of directing a fluid is provided for an epicyclic gear system having a sun gear, a plurality of planet gears, and a carrier connecting the plurality of planet gears and rotating relative to the sun gear. The directing member is disposed radially outside of the sun gear and is configured for movement relative to the outer periphery of the sun gear. The directing member includes an inner surface configured to receive the fluid discharged from the fluid passage and direct the fluid radially inwardly toward the sun gear.
    Type: Application
    Filed: October 3, 2019
    Publication date: April 8, 2021
    Inventor: MICHAEL J. CLIFF
  • Patent number: 8887880
    Abstract: An efficient lubrication system for wet plate brake assemblies includes a flow control system that passes lubricant for cooling and lubrication through interdigitated wet brake plates when the plates are engaged. When the plates are disengaged, the wet plate assembly is controlled to limit its displacement by means of a pin and spring such that a gap is provided around the brake plates to provide a preferential path for lubricant, thus minimizing parasitic losses.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: November 18, 2014
    Assignee: Deere & Company
    Inventors: Michael J. Cliff, Robert L. Wood, Jr., Briton T. Eastman, Poongundran Ganapathi
  • Patent number: 8740741
    Abstract: A differential axle assembly for a work machine having a differential lock capability. The differential axle has a differential gear housing, which utilizes a sealed housing on the outside thereof and a bleed flow path for pressurized liquid lubricant actuating a differential lock feature to provide adequate cooling flow for the differential gear set and differential lock mechanism under heavy duty circumstances.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: June 3, 2014
    Assignee: Deere & Company
    Inventors: Robert L. Wood, Jr., Michael J. Cliff, Craig R. Eike
  • Publication number: 20130065720
    Abstract: A differential axle assembly for a work machine having a differential lock capability. The differential axle has a differential gear housing, which utilizes a sealed housing on the outside thereof and a bleed flow path for pressurized liquid lubricant actuating a differential lock feature to provide adequate cooling flow for the differential gear set and differential lock mechanism under heavy duty circumstances.
    Type: Application
    Filed: September 9, 2011
    Publication date: March 14, 2013
    Inventors: Robert L. Wood, JR., Michael J. Cliff, Craig R. Eike
  • Publication number: 20100300776
    Abstract: An efficient lubrication system for wet plate brake assemblies includes a flow control system that passes lubricant for cooling and lubrication through interdigitated wet brake plates when the plates are engaged. When the plates are disengaged, the wet plate assembly is controlled to limit its displacement by means of a pin and spring such that a gap is provided around the brake plates to provide a preferential path for lubricant, thus minimizing parasitic losses.
    Type: Application
    Filed: June 2, 2009
    Publication date: December 2, 2010
    Inventors: Michael J. Cliff, Robert L. Wood, JR., Briton T. Eastman, Poongundran Ganapathi
  • Patent number: 4256551
    Abstract: A process for electrolysing at least a proportion of a liquid comprising an electrolyte which process comprises passing the liquid between electrodes, at least one of which is an anode and at least one of which is a cathode, the liquid being in a state of laminar flow substantially parallel to the electrodes, the electrodes being disposed substantially horizontally above each other and each electrode being permeable to the product(s) or solutions thereof produced at or adjacent the electrode and, where a density difference is generated on production of the products, the relative disposition of the electrodes is such that the density difference reduces the possibility of the product(s) produced at or adjacent the anode mixing with the product(s) produced at or adjacent the cathode. The process is especially applicable to the electrolysis of brine.
    Type: Grant
    Filed: October 23, 1979
    Date of Patent: March 17, 1981
    Assignee: Imperial Chemical Industries Limited
    Inventors: Michael J. Cliff, William T. Cross, Colin Ramshaw