Patents by Inventor Patrick Dillman

Patrick Dillman 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: 12491943
    Abstract: A vehicle having a primary mover, a charging system, multiple electric loads, and a controller. The charging system includes a charge storing device and an alternator. The alternator is configured to convert mechanical energy generated by the prime mover into electrical energy to charge the charge storing device. The multiple electrical loads are electrically coupled to the charging system via a power distribution module. The controller is communicably coupled to the charging system and is configured to receive an indication that an electrical output of the charging system is unable to provide sufficient electrical energy to each electrical load in the electrical loads. The controller is also configured to provide a control signal to the power distribution module in response to the indication. The control signal is configured to cause the power distribution module to decouple at least one of the electrical loads from the charging system.
    Type: Grant
    Filed: August 27, 2022
    Date of Patent: December 9, 2025
    Assignee: OSHKOSH DEFENSE, LLC
    Inventors: David Calliari, Cody Bauer, Bjoern Gillstroem, Jonathan King, Mark Chapin, Brian Koppa, Aaron Rositch, Erik Ellifson, Patrick Dillman, Robert Sollenskog
  • Publication number: 20250341223
    Abstract: An actuator includes a cylinder, a piston slidably received within the cylinder, a rod coupled to the piston and at least partially extending outwardly from the cylinder, a base coupled to the cylinder, a pump at least partially received within the base and including an inlet port, an electric motor configured to drive the pump and at least partially received within the base, an accumulator including an accumulator cylinder that is enclosed within the cylinder and an accumulator piston slidably received within the accumulator cylinder, and an accumulator valve enclosed within the cylinder. The accumulator valve is configured to selectively provide fluid communication between the accumulator and the inlet port.
    Type: Application
    Filed: May 1, 2025
    Publication date: November 6, 2025
    Applicant: Oshkosh Corporation
    Inventors: Erik Ellifson, Patrick Dillman, Matt Berg, Martin Schimke, Chris Rukas, Land Barnum, Bill Parkin
  • Patent number: 12366279
    Abstract: A damper assembly includes a tubular member including a sidewall and a shoulder. The damper assembly includes a rod and a piston coupled to the rod. A secondary piston has a second contact surface, an opposing second surface, an inner cylindrical face defining a central aperture that receives the rod, and an outer cylindrical face. The opposing second surface includes one or more surface grooves, extending between the inner cylindrical face and the outer cylindrical face along the opposing second surface, and one or more bypass orifices disposed about the body member. The bypass orifices extend along the inner cylindrical face between the second contact surface and the opposing second surface. The secondary piston defines a channel extending between the inner cylindrical face and an outer periphery of the body member. The channel and bypass orifices form a fluid flow path when the piston contacts the secondary piston.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: July 22, 2025
    Assignee: OSHKOSH DEFENSE, LLC
    Inventors: Paul Dumitru, Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart, Robert Sollenskog
  • Publication number: 20240217737
    Abstract: A refuse vehicle according to the present disclosure includes a chassis, a cab coupled to the chassis, a refuse compartment body coupled to the chassis and defining a hopper and a storage volume; and a packer assembly including a packer body coupled to at least one actuator and disposed at least partially within the refuse compartment body, the packer body movable between at least a portion of the hopper and at least a portion of the storage volume, and an enclosure that extends along the refuse body parallel to the chassis, the enclosure at least partially separating the at least one actuator from the refuse compartment.
    Type: Application
    Filed: December 28, 2023
    Publication date: July 4, 2024
    Inventors: Vince Schad, Erik Ellifson, Eric Braun, Brady Slaughter, Patrick Dillman, Ryan Ullius, Jeremy Kiekhaefer, Martin J. Schimke, Caleb Binder, Bennett Unfried, Derek Wente, Jacob Wallin, Matt Erickson
  • Publication number: 20240217736
    Abstract: Provided herein is a refuse vehicle includes a chassis, a cab coupled to the chassis, a body coupled to the chassis and housing a hopper, and a subhopper disposed adjacent or at least partially within the hopper. The subhopper includes a sloped upper surface configured to direct refuse deposited into the hopper toward an end of the hopper.
    Type: Application
    Filed: December 28, 2023
    Publication date: July 4, 2024
    Inventors: Vince Schad, Erik Ellifson, Eric Braun, Brady Slaughter, Patrick Dillman, Ryan Ullius, Jeremy Kiekhaefer, Martin J. Schimke, Caleb Binder, Bennett Unfried, Derek Wente, Jacob Wallin, Matt Erickson
  • Patent number: 11932068
    Abstract: A suspension element includes a main body having an end cap defining an internal volume and a tubular element slidably engaged with the main body. The suspension element further includes a first piston and a flow control element. The flow control element is configured to prevent movement of the tubular element relative the main body in a direction. The suspension element may further include a locking member and a piston. The locking member may be configured to engage a barrier of the main body when the first piston traverses at least a predetermined distance towards the end cap. The locking member may be affixed to the tubular element and may fully surround the tubular element. Together the flow control element and the locking member are configured to prevent movement of the suspension element.
    Type: Grant
    Filed: May 5, 2022
    Date of Patent: March 19, 2024
    Assignee: Oshkosh Defense, LLC
    Inventors: Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart
  • Patent number: 11813917
    Abstract: A vehicle includes a support arm and a suspension element. The suspension element is rotatably connected to a support arm of a vehicle via a mounting pin that extends through an opening on the suspension element, a thrust washer, and a seal. The combination of elements prevent debris from migrating into the connection. The suspension element is configured to connect to a structural element of the vehicle via an upper mount. The suspension element may include a recoil damper having a piston with a plurality of grooves arranged to balance the forces on the piston during and after a recoil event or jounce.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: November 14, 2023
    Assignee: Oshkosh Defense, LLC
    Inventors: Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart, Robert Sollenskog
  • Publication number: 20220258556
    Abstract: A suspension element includes a main body having an end cap defining an internal volume and a tubular element slidably engaged with the main body. The suspension element further includes a first piston and a flow control element. The flow control element is configured to prevent movement of the tubular element relative the main body in a direction. The suspension element may further include a locking member and a piston. The locking member may be configured to engage a barrier of the main body when the first piston traverses at least a predetermined distance towards the end cap. The locking member may be affixed to the tubular element and may fully surround the tubular element. Together the flow control element and the locking member are configured to prevent movement of the suspension element.
    Type: Application
    Filed: May 5, 2022
    Publication date: August 18, 2022
    Applicant: Oshkosh Defense, LLC
    Inventors: Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart
  • Patent number: 11325437
    Abstract: A suspension element includes a main body having an end cap defining an internal volume and a tubular element slidably engaged with the main body. The suspension element further includes a first piston and a flow control element. The flow control element is configured to prevent movement of the tubular element relative the main body in a direction. The suspension element may further include a locking member and a piston. The locking member may be configured to engage a barrier of the main body when the first piston traverses at least a predetermined distance towards the end cap. The locking member may be affixed to the tubular element and may fully surround the tubular element. Together the flow control element and the locking member are configured to prevent movement of the suspension element.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: May 10, 2022
    Assignee: Oshkosh Defense, LLC
    Inventors: Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart
  • Publication number: 20220065322
    Abstract: A damper assembly includes a tubular member including a sidewall and a shoulder. The damper assembly includes a rod and a piston coupled to the rod. A secondary piston has a second contact surface, an opposing second surface, an inner cylindrical face defining a central aperture that receives the rod, and an outer cylindrical face. The opposing second surface includes one or more surface grooves, extending between the inner cylindrical face and the outer cylindrical face along the opposing second surface, and one or more bypass orifices disposed about the body member. The bypass orifices extend along the inner cylindrical face between the second contact surface and the opposing second surface. The secondary piston defines a channel extending between the inner cylindrical face and an outer periphery of the body member. The channel and bypass orifices form a fluid flow path when the piston contacts the secondary piston.
    Type: Application
    Filed: November 9, 2021
    Publication date: March 3, 2022
    Applicant: Oshkosh Defense, LLC
    Inventors: Paul DUMITRU, Aaron ROSITCH, Erik ELLIFSON, Patrick DILLMAN, Kai SCHUBART, Robert SOLLENSKOG
  • Patent number: 11199239
    Abstract: A damper assembly includes a tubular member including a sidewall and a shoulder. The damper assembly includes a rod and a piston coupled to the rod. A secondary piston has a second contact surface, an opposing second surface, an inner cylindrical face defining a central aperture that receives the rod, and an outer cylindrical face. The opposing second surface includes one or more surface grooves, extending between the inner cylindrical face and the outer cylindrical face along the opposing second surface, and one or more bypass orifices disposed about the body member. The bypass orifices extend along the inner cylindrical face between the second contact surface and the opposing second surface. The secondary piston defines a channel extending between the inner cylindrical face and an outer periphery of the body member. The channel and bypass orifices form a fluid flow path when the piston contacts the secondary piston.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: December 14, 2021
    Assignee: Oshkosh Defense, LLC
    Inventors: Paul Dumitru, Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart, Robert Sollenskog
  • Publication number: 20210155063
    Abstract: A vehicle includes a support arm and a suspension element. The suspension element is rotatably connected to a support arm of a vehicle via a mounting pin that extends through an opening on the suspension element, a thrust washer, and a seal. The combination of elements prevent debris from migrating into the connection. The suspension element is configured to connect to a structural element of the vehicle via an upper mount. The suspension element may include a recoil damper having a piston with a plurality of grooves arranged to balance the forces on the piston during and after a recoil event or jounce.
    Type: Application
    Filed: February 2, 2021
    Publication date: May 27, 2021
    Applicant: Oshkosh Defense, LLC
    Inventors: Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart, Robert Sollenskog
  • Patent number: 10940728
    Abstract: A vehicle includes a support arm and a suspension element. The suspension element is rotatably connected to a support arm of a vehicle via a mounting pin that extends through an opening on the suspension element, a thrust washer, and a seal. The combination of elements prevent debris from migrating into the connection. The suspension element is configured to connect to a structural element of the vehicle via an upper mount. The suspension element may include a recoil damper having a piston with a plurality of grooves arranged to balance the forces on the piston during and after a recoil event or jounce.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: March 9, 2021
    Assignee: Oshkosh Defense, LLC
    Inventors: Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart, Robert Sollenskog
  • Publication number: 20200254840
    Abstract: A vehicle includes a support arm and a suspension element. The suspension element is rotatably connected to a support arm of a vehicle via a mounting pin that extends through an opening on the suspension element, a thrust washer, and a seal. The combination of elements prevent debris from migrating into the connection. The suspension element is configured to connect to a structural element of the vehicle via an upper mount. The suspension element may include a recoil damper having a piston with a plurality of grooves arranged to balance the forces on the piston during and after a recoil event or jounce.
    Type: Application
    Filed: April 27, 2020
    Publication date: August 13, 2020
    Applicant: Oshkosh Defense, LLC
    Inventors: Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart, Robert Sollenskog
  • Publication number: 20200223276
    Abstract: A suspension element includes a main body having an end cap defining an internal volume and a tubular element slidably engaged with the main body. The suspension element further includes a first piston and a flow control element. The flow control element is configured to prevent movement of the tubular element relative the main body in a direction. The suspension element may further include a locking member and a piston. The locking member may be configured to engage a barrier of the main body when the first piston traverses at least a predetermined distance towards the end cap. The locking member may be affixed to the tubular element and may fully surround the tubular element. Together the flow control element and the locking member are configured to prevent movement of the suspension element.
    Type: Application
    Filed: March 31, 2020
    Publication date: July 16, 2020
    Applicant: Oshkosh Defense, LLC
    Inventors: Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart
  • Patent number: 10632805
    Abstract: A vehicle includes a support arm and a suspension element. The suspension element is rotatably connected to a support arm of a vehicle via a mounting pin that extends through an opening on the suspension element, a thrust washer, and a seal. The combination of elements prevent debris from migrating into the connection. The suspension element is configured to connect to a structural element of the vehicle via an upper mount. The suspension element may include a recoil damper having a piston with a plurality of grooves arranged to balance the forces on the piston during and after a recoil event or jounce.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: April 28, 2020
    Assignee: Oshkosh Defense, LLC
    Inventors: Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart, Robert Sollenskog
  • Patent number: 10611203
    Abstract: A suspension element includes a main body having an end cap defining an internal volume and a tubular element slidably engaged with the main body. The suspension element further includes a first piston and a flow control element. The flow control element is configured to prevent movement of the tubular element relative the main body in a direction. The suspension element may further include a locking member and a piston. The locking member may be configured to engage a barrier of the main body when the first piston traverses at least a predetermined distance towards the end cap. The locking member may be affixed to the tubular element and may fully surround the tubular element. Together the flow control element and the locking member are configured to prevent movement of the suspension element.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: April 7, 2020
    Assignee: Oshkosh Defense, LLC
    Inventors: Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart
  • Publication number: 20190178329
    Abstract: A damper assembly includes a tubular member including a sidewall and a shoulder. The damper assembly includes a rod and a piston coupled to the rod. A secondary piston has a second contact surface, an opposing second surface, an inner cylindrical face defining a central aperture that receives the rod, and an outer cylindrical face. The opposing second surface includes one or more surface grooves, extending between the inner cylindrical face and the outer cylindrical face along the opposing second surface, and one or more bypass orifices disposed about the body member. The bypass orifices extend along the inner cylindrical face between the second contact surface and the opposing second surface. The secondary piston defines a channel extending between the inner cylindrical face and an outer periphery of the body member. The channel and bypass orifices form a fluid flow path when the piston contacts the secondary piston.
    Type: Application
    Filed: February 14, 2019
    Publication date: June 13, 2019
    Applicant: Oshkosh Defense, LLC
    Inventors: Paul Dumitru, Aaron Rositch, Erik Ellifson, Patrick Dillman, Kai Schubart, Robert Sollenskog