Patents by Inventor Mark A. Sterrett

Mark A. Sterrett 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: 11787450
    Abstract: A level control system adjusts the level of a vehicle, in particular a rail vehicle, and includes at least one level control cylinder and a level control piston. The level control piston is at least partly received in the level control cylinder in a movable manner. The level control cylinder has a collar-shaped shoulder, and the level control system has a first fixing disc which is connected to the level control piston in order to transmit a lifting movement. At least one spacer element is arranged between the collar-shaped shoulder of the level control cylinder and the first fixing disc.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: October 17, 2023
    Inventors: Ulrich Wermund, Mark A. Sterrett, Jurgen Muhr, Eduard Nies
  • Patent number: 11608093
    Abstract: A level control system adjusting the level of a vehicle, in particular a rail vehicle, and includes at least one level control cylinder and a level control piston, which is at least partially movably accommodated in the level control cylinder. Accordingly, the level control piston may have a substantially continuous outer diameter.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: March 21, 2023
    Inventors: Jürgen Muhr, Ulrich Wermund, Eduard Nies, Mark A. Sterrett
  • Patent number: 11420657
    Abstract: A levelling system for a vehicle, in particular a rail vehicle, includes at least one levelling cylinder and a levelling piston. The levelling piston is at least partially provided in the levelling cylinder in a movable manner for setting the level of the rail vehicle. Further, the levelling system includes at least one guiding element, which is arranged within the levelling piston and partially protrudes from the levelling piston into at least one recess of the levelling cylinder such that an end stop in a longitudinal direction is provided for the relative movement between the levelling piston and the levelling cylinder.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: August 23, 2022
    Inventors: Jürgen Muhr, Ulrich Wermund, Eduard Nies, Mark A. Sterrett
  • Patent number: 11352029
    Abstract: A level control system adjusts the level of a rail vehicle, and includes at least one level control cylinder and a level control piston. The level control piston is at least partly received in the level control cylinder in a movable manner. The level control system has at least one first hydraulic connection, wherein the level control cylinder or the level control piston has a collared shoulder, in which at least one first fluid channel connected to the first hydraulic connection is arranged. At least one first attachment for receiving the first hydraulic connection is provided along the collared shoulder, the first attachment, being arranged on the collared shoulder tangentially to the longitudinal axis of the level control cylinder or of the level control piston such that at least one tangential external fluid connection on the collared shoulder can be connected to the at least one first hydraulic connection.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: June 7, 2022
    Inventor: Mark A. Sterrett
  • Publication number: 20210031815
    Abstract: A level control system adjusting the level of a vehicle, particular a rail vehicle, and includes at least one level control cylinder and a level control piston, which is at least partially movably accommodated in the level control cylinder. Accordingly, the level control piston may have a substantially continuous outer diameter.
    Type: Application
    Filed: September 17, 2018
    Publication date: February 4, 2021
    Inventors: Jürgen MUHR, Ulrich WERMUND, Eduard NIES, Mark A. STERRETT
  • Publication number: 20200361500
    Abstract: A levelling system for a vehicle, in particular a rail vehicle, includes at least one levelling cylinder and a levelling piston. The levelling piston is at least partially provided in the levelling cylinder in a movable manner for setting the level of the rail vehicle. Further, the levelling system includes at least one guiding element, which is arranged within the levelling piston and partially protrudes from the levelling piston into at least one recess of the levelling cylinder such that an end stop in a longitudinal direction is provided for the relative movement between the levelling piston and the levelling cylinder.
    Type: Application
    Filed: September 17, 2018
    Publication date: November 19, 2020
    Inventors: Jürgen MUHR, Ulrich WERMUND, Eduard NIES, Mark A. STERRETT
  • Publication number: 20200353958
    Abstract: A level control system adjusts the level of a vehicle, in particular a rail vehicle, and includes at least one level control cylinder and a level control piston. The level control piston is at least partly received in the level control cylinder in a movable manner. The level control cylinder has a collar-shaped shoulder, and the level control. system has a first fixing disc which is connected to the level control piston in order to transmit a lifting movement. At least one spacer element is arranged between the collar-shaped shoulder of the level control cylinder and the first fixing disc.
    Type: Application
    Filed: September 17, 2018
    Publication date: November 12, 2020
    Inventors: Ulrich WERMUND, Mark A. STERRETT, Jurgen MUHR, Eduard NIES
  • Publication number: 20200307656
    Abstract: A level control system adjusts the level of a rail vehicle, and includes at least one level control cylinder and a level control piston. The level control piston is at least partly received in the level control cylinder in a movable manner. The level control system has at least one first hydraulic connection, wherein the level control cylinder or the level control piston has a collared shoulder, in which at least one first fluid channel connected to the first hydraulic connection is arranged. At least one first attachment for receiving the first hydraulic connection is provided along the collared shoulder, the first attachment, being arranged on the collared shoulder tangentially to the longitudinal axis of the level control cylinder or of the level control piston such that at least one tangential external fluid connection on the collared shoulder can be connected to the at least one first hydraulic connection.
    Type: Application
    Filed: September 17, 2018
    Publication date: October 1, 2020
    Inventor: Mark A. STERRETT
  • Patent number: 7025044
    Abstract: A pump assembly includes a high-pressure pump that flows pressurized working fluid in a fuel injection system of a diesel engine. The assembly includes a pilot-operated inlet throttle valve that receives a flow of low-pressure fluid from a feed pump and controls the volume of fluid flowed to the high-pressure pump in response to an electronic control module for the diesel engine. The operation of the inlet throttle valve is independent of fluctuations in output pressure from the feed pump.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: April 11, 2006
    Assignee: R. H. Sheppard Co., Inc.
    Inventors: Robert H. Breeden, Peter H. Sheppard, Mark A. Sterrett
  • Patent number: 6669453
    Abstract: A pump assembly for mounting a high-pressure oil pump on an internal combustion engine where the pump in the assembly is mounted in a closed chamber and a solenoid controlled valve is mounted outside of the chamber.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: December 30, 2003
    Inventors: Robert H. Breeden, Peter H. Sheppard, Mark A. Sterrett