Patents by Inventor Martin Lehman

Martin Lehman 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: 11352973
    Abstract: Operating a machine system includes triggering, based on activation of an on-board electronic control system, interrogation of electronically controlled components installed in a machine to read a plurality of electronic trim files each resident on a different one of the electronically controlled components. A data structure on an electronic storage medium in the control system is populated with the electronic trim files each time the control system is activated, such as by turning on an ignition switch. Operating the machine system also includes outputting control signals based on the electronic trim files to run the machine system based on operation of the electronically controlled components responsive to the outputted control signals.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: June 7, 2022
    Assignee: Caterpillar Inc.
    Inventors: Martin Lehman, Vincent Neyens, Scott Shafer, Andrew Marrack
  • Publication number: 20200318569
    Abstract: Operating a machine system includes triggering, based on activation of an on-board electronic control system, interrogation of electronically controlled components installed in a machine to read a plurality of electronic trim files each resident on a different one of the electronically controlled components. A data structure on an electronic storage medium in the control system is populated with the electronic trim files each time the control system is activated, such as by turning on an ignition switch. Operating the machine system also includes outputting control signals based on the electronic trim files to run the machine system based on operation of the electronically controlled components responsive to the outputted control signals.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 8, 2020
    Applicant: Caterpillar Inc.
    Inventors: Martin Lehman, Vincent Neyens, Scott Shafer, Andrew Marrack
  • Patent number: 10184436
    Abstract: A fluid injection system includes a fluid injector assembly; a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly; an injector assembly outlet conduit fluidly coupled to an outlet port of the fluid injector assembly and disposed downstream of the fluid injector assembly, the injector assembly outlet conduit defining a pressure measurement port and a flow-restricting orifice, the pressure measurement port being disposed upstream of the flow-restricting orifice along the direction of fluid flow through the fluid injector assembly; a pressure sensor fluidly coupled to the pressure measurement port; and a controller operatively coupled to the fluid conditioning module and the pressure sensor. The controller is configured to adjust a flowrate of a fluid through the injector assembly inlet conduit based on a pressure signal from the pressure sensor.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: January 22, 2019
    Assignee: Caterpillar Inc.
    Inventors: Scott F. Shafer, Martin Lehman, Lifeng Wang, David E. Hackett, Taylor Tang, Andrew Marrack, Dennis H. Gibson
  • Patent number: 10036314
    Abstract: A fluid injection system includes a fluid injector assembly, a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly via an injector assembly inlet conduit. The fluid injection system further includes a flush conduit fluidly coupled to the outlet port of the fluid conditioning module, a flush valve disposed in the flush conduit and configured to control a flowrate of fluid therethrough, and a controller operatively coupled to the fluid conditioning module and the flush valve, the controller being configured to adjust a flowrate of a fluid through the injector assembly inlet conduit by controlling a flowrate of fluid through the flush conduit.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: July 31, 2018
    Assignee: Caterpillar Inc.
    Inventors: David E. Hackett, Martin Lehman, Scott F. Shafer
  • Patent number: 9957940
    Abstract: A fluid conditioning system includes a first filter mount having a first filter inlet port and a first filter outlet port, a first motor, a first pump operatively coupled to the first motor, a second filter mount having a second filter inlet port, a second pump, and a controller operatively coupled to the first motor. The controller is configured to operate the first pump at a flowrate that is higher than a flowrate of the second pump. An outlet of the first pump is fluidly coupled to the first filter inlet port via a first filter inlet conduit, and an inlet of the first pump is fluidly coupled the first filter outlet port via a first filter outlet conduit. An inlet of the second pump is fluidly coupled to the first filter outlet port via the first filter outlet conduit.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: May 1, 2018
    Assignee: Caterpillar Inc.
    Inventors: Scott F. Shafer, David E. Hackett, Steven Y. Tian, Martin Lehman
  • Patent number: 9909468
    Abstract: A fluid conditioning system includes a recirculation pump fluidly coupled to a reservoir via a first conduit; a delivery pump fluidly coupled in series with the recirculation pump, such that an outlet of the recirculation pump is fluidly coupled to an inlet of the delivery pump via a second conduit; and a recirculation loop including a recirculation filter, an inlet of the recirculation filter being fluidly coupled to the second conduit, and an outlet of the recirculation filter being fluidly coupled to the first conduit. The recirculation pump is configured to operate at a flow rate that is higher than a flow rate of the delivery pump.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: March 6, 2018
    Assignee: Caterpillar Inc.
    Inventors: Martin Lehman, Scott F. Shafer
  • Publication number: 20170198633
    Abstract: A fluid injection system includes a fluid injector assembly, a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly via an injector assembly inlet conduit. The fluid injection system further includes a flush conduit fluidly coupled to the outlet port of the fluid conditioning module, a flush valve disposed in the flush conduit and configured to control a flowrate of fluid therethrough, and a controller operatively coupled to the fluid conditioning module and the flush valve, the controller being configured to adjust a flowrate of a fluid through the injector assembly inlet conduit by controlling a flowrate of fluid through the flush conduit.
    Type: Application
    Filed: January 11, 2016
    Publication date: July 13, 2017
    Applicant: Caterpillar Inc.
    Inventors: David E. Hackett, Martin Lehman, Scott F. Shafer
  • Publication number: 20170058728
    Abstract: A fluid conditioning system includes a recirculation pump fluidly coupled to a reservoir via a first conduit; a delivery pump fluidly coupled in series with the recirculation pump, such that an outlet of the recirculation pump is fluidly coupled to an inlet of the delivery pump via a second conduit; and a recirculation loop including a recirculation filter, an inlet of the recirculation filter being fluidly coupled to the second conduit, and an outlet of the recirculation filter being fluidly coupled to the first conduit. The recirculation pump is configured to operate at a flow rate that is higher than a flow rate of the delivery pump.
    Type: Application
    Filed: August 25, 2015
    Publication date: March 2, 2017
    Applicant: Caterpillar Inc.
    Inventors: Martin Lehman, Scott F. Shafer
  • Publication number: 20170016416
    Abstract: A fluid injection system includes a fluid injector assembly; a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly; an injector assembly outlet conduit fluidly coupled to an outlet port of the fluid injector assembly and disposed downstream of the fluid injector assembly, the injector assembly outlet conduit defining a pressure measurement port and a flow-restricting orifice, the pressure measurement port being disposed upstream of the flow-restricting orifice along the direction of fluid flow through the fluid injector assembly; a pressure sensor fluidly coupled to the pressure measurement port; and a controller operatively coupled to the fluid conditioning module and the pressure sensor. The controller is configured to adjust a flowrate of a fluid through the injector assembly inlet conduit based on a pressure signal from the pressure sensor.
    Type: Application
    Filed: July 17, 2015
    Publication date: January 19, 2017
    Applicant: Caterpillar Inc.
    Inventors: Scott F. Shafer, Martin Lehman, Lifeng Wang, David E. Hackett, Taylor Tang, Andrew Marrack, Dennis H. Gibson
  • Publication number: 20160230720
    Abstract: A fluid conditioning system includes a first filter mount having a first filter inlet port and a first filter outlet port; a motor unit; a recirculation pump unit operatively coupled to the motor unit, an outlet of the recirculation pump unit being fluidly coupled to the first filter inlet port via a first filter inlet conduit, an inlet of the recirculation pump unit being fluidly coupled to the first filter outlet port via a first filter outlet conduit; a second filter mount having a second filter inlet port; and a delivery pump unit operatively coupled to the motor unit. The inlet of the delivery pump unit is fluidly coupled to the first filter outlet port via the first filter outlet conduit, and the outlet of the delivery pump unit is fluidly coupled to the second filter inlet port via a second filter inlet conduit.
    Type: Application
    Filed: February 9, 2015
    Publication date: August 11, 2016
    Applicant: Caterpillar Inc.
    Inventors: David E. Hackett, Scott F. Shafer, Steven Y. Tian, Martin Lehman
  • Publication number: 20160195053
    Abstract: A fluid conditioning system includes a first filter mount having a first filter inlet port and a first filter outlet port, a first motor, a first pump operatively coupled to the first motor, a second filter mount having a second filter inlet port, a second pump, and a controller operatively coupled to the first motor. The controller is configured to operate the first pump at a flowrate that is higher than a flowrate of the second pump. An outlet of the first pump is fluidly coupled to the first filter inlet port via a first filter inlet conduit, and an inlet of the first pump is fluidly coupled the first filter outlet port via a first filter outlet conduit. An inlet of the second pump is fluidly coupled to the first filter outlet port via the first filter outlet conduit.
    Type: Application
    Filed: January 5, 2015
    Publication date: July 7, 2016
    Applicant: Caterpillar Inc.
    Inventors: Scott F. Shafer, David E. Hackett, Steven Y. Tian, Martin Lehman
  • Patent number: 9303604
    Abstract: An asymmetrical orifice for bypass control in a clean fuel module may include a body having first and second end surfaces and an inner surface defining a bore through the body extending from a first opening through the first end surface to a second opening through the second end surface. The first opening has a first opening inner diameter and the second opening has a second opening inner diameter that is less than the first opening inner diameter. The asymmetrical orifice also includes a flow control contour in the second end surface surrounding the second opening of the bore. The configuration may give the asymmetrical orifice a first discharge coefficient for fluid flowing from the first opening to the second opening that is greater than a second discharge coefficient for fluid flowing in a second direction from the second opening to the first opening.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: April 5, 2016
    Assignee: Caterpillar Inc.
    Inventors: David Elliot Hackett, Scott Shafer, Martin Lehman, Alan Willard Wells, Lifeng Wang
  • Publication number: 20150198124
    Abstract: An asymmetrical orifice for bypass control in a clean fuel module may include a body having first and second end surfaces and an inner surface defining a bore through the body extending from a first opening through the first end surface to a second opening through the second end surface. The first opening has a first opening inner diameter and the second opening has a second opening inner diameter that is less than the first opening inner diameter. The asymmetrical orifice also includes a flow control contour in the second end surface surrounding the second opening of the bore.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 16, 2015
    Applicant: Caterpillar, Inc.
    Inventors: David Elliot Hackett, Scott Shafer, Martin Lehman, Alan Willard Wells, Lifeng Wang
  • Patent number: 8626404
    Abstract: The described system and method are implemented within a motor grader or other machine for grading of surfaces, wherein the machine includes a ground engaging element, as well as one or more blades for removing surface material. In this context, the described system and method prevent slippage of the ground engaging element against the underlying surface. In an embodiment, a torque limit is applied, wherein the torque limit corresponds to a torque that is less than that required for slippage under the current operating conditions, thus avoiding the problems caused by both overly aggressive and overly conservative cut depth strategies.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: January 7, 2014
    Assignee: Caterpillar Inc.
    Inventors: Norval P. Thomson, Gregory Durst, Martin Lehman, Shane McBride, Daniel P. Sergison
  • Publication number: 20120130600
    Abstract: The described system and method are implemented within a motor grader or other machine for grading of surfaces, wherein the machine includes a ground engaging element, as well as one or more blades for removing surface material. In this context, the described system and method prevent slippage of the ground engaging element against the underlying surface. In an embodiment, a torque limit is applied, wherein the torque limit corresponds to a torque that is less than that required for slippage under the current operating conditions, thus avoiding the problems caused by both overly aggressive and overly conservative cut depth strategies.
    Type: Application
    Filed: November 19, 2010
    Publication date: May 24, 2012
    Applicant: CATERPILLAR INC.
    Inventors: NORVAL P. THOMSON, GREGORY DURST, MARTIN LEHMAN, SHANE MCBRIDE, DANIEL P. SERGISON
  • Publication number: 20080220118
    Abstract: The present invention relates to phytase variants, their preparation and uses, which phytase variants, when aligned according to FIG. 1, are amended as compared to a model phytase in at least one of a number of positions. Preferred model phytases are basidiomycete and ascomycete phytases, such as Peniophora phytase and Aspergillus phytases. Preferred phytase variants exhibits amended activity characteristics, such as improved specific activity and/or improved thermostability.
    Type: Application
    Filed: November 19, 2007
    Publication date: September 11, 2008
    Applicant: Novozymes A/S
    Inventors: Allan Svendsen, Soren Flensted Lassen, Dirk Kostrewa, Luis Pasamontes, Martin Lehman, Andrea Tomschy, Adolphus Van Loon, Kurt Vogel, Markus Wyss
  • Patent number: 7326554
    Abstract: The present invention relates to phytase variants, their preparation and uses, which phytase variants, when aligned according to FIG. 1, are amended as compared to a model phytase in at least one of a number of positions. Preferred model phytases are basidiomycete and ascomycete phytases, such as Peniophora phytase and Aspergillus phytases. Preferred phytase variants exhibits amended activity characteristics, such as improved specific activity and/or improved thermostability.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: February 5, 2008
    Assignee: Novozymes Als
    Inventors: Allan Svendsen, Soren Flensted Lassen, Dirk Kostrewa, Luis Pasamontes, Martin Lehman, Andrea Tomschy, Adolphus Van Loon, Kurt Vogel, Markus Wyss
  • Publication number: 20020127218
    Abstract: The present invention relates to phytase variants, their preparation and uses, which phytase variants, when aligned according to FIG. 1, are amended as compared to a model phytase in at least one of a number of positions. Preferred model phytases are basidiomycete and ascomycete phytases, such as Peniophora phytase and Aspergillus phytases. Preferred phytase variants exhibits amended activity characteristics, such as improved specific activity and/or improved thermostability.
    Type: Application
    Filed: February 26, 2002
    Publication date: September 12, 2002
    Applicant: Novozymes A/S
    Inventors: Allan Svendsen, Soren Flensted Lassen, Dirk Kostrewa, Luis Pasamontes, Martin Lehman, Andrea Tomschy, Adolphus Van Loon, Kurt Vogel, Markus Wyss
  • Patent number: 6125905
    Abstract: Protecting coverings are provided for glass windows and the like. The protective coverings comprise a fiber reinforced polymeric fabric flexible enough to be rolled upon itself.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: October 3, 2000
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventors: Margaret Mary Woodside, Frank Joseph Macdonald, Jeri Oliver Clark, Joseph Martine Lehman, Scott Alan Calvert
  • Patent number: 6089300
    Abstract: Protective coverings are provided for glass windows and the like. The protective coverings comprise impact and puncture resistant protective panels formed from strand material which includes reinforcing fibers and polymeric material.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: July 18, 2000
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventors: Margaret Mary Woodside, Frank Joseph Macdonald, Scott Alan Calvert, Joseph Martine Lehman