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Mark R. Webster, PE, MSME, DFE, MBA

Conveyors, Lifts, and Material Handling Expert

Curriculum Vitae

  • Master of Science, Mechanical Engineering, (MSME), 1990
    Specialization: Computer Aided Design of Engineering Systems
    Marquette University, Milwaukee, WI
  • Master of Business Administration (MBA), 2000
    Marquette University, Milwaukee, WI
  • Bachelor of Science, Mechanical Engineering Technology, 1983
    Professional Specialization Certificate – Microprocessor Programming
    Professional Specialization Certificate – Computer Aided Analysis
    Milwaukee School of Engineering, Milwaukee, WI
  • Associate of Science, Mechanical Design Technology, 1978
    North Central Technical Institute, Wausau, WI
  • Registered Professional Engineer (PE)
    Georgia, Illinois, Indiana, Minnesota, Wisconsin, New York, Arkansas, Oklahoma, Washington, Missouri, Michigan, Wyoming, Texas
  • Board Certified Diplomate Forensic Engineer (DFE), 2014 to Present
    National Academy of Forensic Engineers (NAFE)
Professional Experience

Owner, Consultant, and Expert Witness, Webster Engineering, LLC, 2011 - Present

Providing mechanical engineering analysis, consulting, and expert witness services to attorneys in cases of personal injury, product liability, and patents regarding issues such as:

  • Conveyor design and safety
  • Material handling systems and processes
  • Material lifts and lifting systems
  • Machine design, safety, and failure
  • Hydraulics and hydraulic lifting systems
  • Elevators
  • Patents

Vice President of Engineering, Pflow Industries, Inc., 1985 - 2020

Recipient of the Wisconsin Governors New Product Development Award twice for two of my designs.
Design and manufacture of:

  • Conveyor systems
  • Lifting systems
  • Custom engineered material handling systems
  • Industrial machinery and controls
  • Industry leader in Vertical Reciprocating Conveyors
  • Automated vehicle parking lifts, display lifts, and storage lifts
ASME Codes & Standards Activity
  • ANSI/ASME B20.1 "Safety Standards for Conveyors and Related Equipment" committee. Current Chair, Vice Chair 2010-2013. Member since 2002.
  • ASME Material Handling Engineering Division Executive Committee. Chair 2013-2015. Vice Chair 2012-2013.
  • ANSI/ASME A17.1 Safety Standards for Elevators. Dumbwaiter and ATD Committee. Member since 2023
  • ASME Board on Safety Codes and Standards. Chair 2015-2021. Vice Chair 2015-2018. Member since 2011.
  • ASME Board on Codes and Standards Operations. Member 2018-2021.
  • ASME Council on Standards and Certification. Member 2018-2021.
  • ASME Manufacturing Technical Group Operating Board. Alternate Member 2012-2013.
  • ASME Safety Codes and Standards Awards Committee. Chair 2016 – 2018.
  • ASME Task Force on the Review of the "Examples of Use for Mechanical Engineering Students" Brochure. Member since 2011.
  • ASME Nominating Committee. Member 2017-2019.
Other Professional Association Membership and Standards Activity
  • American Society of Safety Professionals (ASSP)
    • Advisory Board, Member since 2022
    • Standards Development Committee, Member since 2023
    • ANSI/ASSP A10 Construction and Demolition Operations Committee, Alternate Member since 2023
  • American Society for Testing and Materials (ASTM)
    • ASTM E58 Forensic Engineering Committee, Member since 2019
  • National Society of Professional Engineers (NSPE)
  • Wisconsin Society of Professional Engineers (WSPE)
  • American Society of Mechanical Engineers (ASME)
  • National Academy of Forensic Engineers (NAFE)
  • American Institute of Steel Construction (AISC)
  • Conveyor Equipment Manufacturers Association (CEMA)
Continuing Education and Training
  • Forensic Engineering Training, Various Topics, National Academy of Forensic Engineers, 2015-2023 (145 hours)
  • SolidWorks Simulation and Motion Software Training, 2014 (16 hours)
  • Autodesk Mechanical Event Simulation Software Training, 2006 (16 hours)
  • Patent Litigation Training (SEAK), 2017 (16 hours)
  • US 5,908,088 Hydraulic Drive (Material Handling Lift)
  • US 6,820,295 Support Leg Apparatus (Dock Leveler Safety)
  • US 6,896,125 Belt Attachment Method (Continuous Vertical Conveyor/Material Lift)
  • US 7,131,532 Belt Attachment Method (Continuous Vertical Conveyor/Material Lift)
  • US 7,453,358 Shopping Cart Lift with Gated Access (Conveyor Safety)
  • US 7,779,992 Shopping Cart Conveyor with Pivoting Lug (Conveyor Drive)
  • US 7,931,136 Jam Sensor for Shopping Cart Conveyor (Conveyor Safety)
  • US 8,075,237 Multi-Level Vehicle Lift (Automotive Display Lift)
  • US 8,328,003 Shopping Cart Conveyor with Gate Assembly (Conveyor Safety)
  • US 9,517,845 Moveable Personnel Platform for Unloading a Unit Load Device (Material Handling)
  • US 9,598,242 Moving Work Surface (Assembly Line Conveyor System)
  • US 10,183,840 System for Chain Chordal Action Suppression (Vertical Conveyor/Material Lift)
  • US 10,913,635 System for Chain Chordal Action Suppression (Vertical Conveyor/Material Lift)
  • US 11,059,678 Barrel Elevator Including Shielded Actuation Mechanisms (Conveyor/Lift)
  • US 11,345,576 Hinged Carriage Deck for Vertical Reciprocating Conveyor (Vertical Conveyor/Material Lift)
  • CA 2,880,976 Moving Work Surface (Assembly Line Conveyor System)
  • "Technical Reference Manual for Conveyors and Lifting Systems," for Pflow Industries, 2022.
  • "Dynamic Motion Simulation: Application in Forensic Engineering," Journal of the National Academy of Forensic Engineers, June 2019.
  • Quoted in "Unique Lift System Enables Installation and Servicing of Large Telescope Mirrors," Motion Design, October 2018.
  • Quoted in "Moving-floor assembly line streamlines production of farm equipment," Design World, December 2015.
  • "Recreational Vehicle Storage Lift" (Servo-Hydraulic Lift Drive System), Elevator World Magazine, March 2003.
  • "VRC Drive Design", Webinar, February 23, 2023
  • "High Speed Vertical Reciprocating Conveyors", Webinar, January 19, 2023
  • "Servo-Hydraulic Case Studies", Webinar, November 29, 2022
  • "Components and Circuits for Hydraulic Lifting Systems", Webinar, May 19, 2022
  • "Vertical Reciprocating Conveyors – Operational and Dynamic Forces and Effects," Webinar, July 21, 2021.
  • "Vertical Reciprocating Conveyors – Application and Design of Deck Locks and Maintenance Pins," Webinar, July 8, 2021.
  • "Beyond B20.1 – Additional Safety Standards and Industry Guidelines for Conveyors and Conveyor Systems," Webinar, June 21, 2021.
  • "ASME B20.1 Safety Standards for Conveyors and Related Equipment," Webinar, December 3, 2020.
  • "An Introduction to Forensic Engineering with Case Studies" presented at the Illinois Society of Professional Engineers' annual conference, July 19, 2018. Personal injury/product liability case studies involving a hydraulic dock lift and an aerial lift.

"I was so impressed when I deposed you as an expert for the opposition that I would like to retain you in a new conveyor case we have. This is the highest compliment for you as an expert."

Client Comments

Mark R. Webster, PE, MSME, DFE, MBA

Mark R. Webster, PE, MSME, DFE, MBA

1356 E. Friess Lake Drive
Hubertus, WI 53033

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