John E. Scates, Professional Engineer








BS Mechanical Engineering, Summa Cum Laude
Texas A&M University 1979

Licensed Professional Engineer, Texas
Licensed Professional Engineer, Florida
Licensed Professional Engineer, North Carolina
Licensed Professional Engineer, South Carolina

Member American Society of Mechanical Engineers (ASME)
Treasurer ASM-International

John E. Scates, P.E., Carrollton, TX. 6/97-present

Product Failure Analysis

Mechanical failure analysis (in excess of 2500 events)
Relating to water loss, including:

  • Filters, Water Hoses, Water Heaters and related components.
  • Appliances (dishwashers, water softeners, clothes washers, refrigerators / ice machines).

Failure analysis of other misc. products, including vehicles and small fires.

Accident Investigations

  • Accident investigations relating to doors, including automatic pedestrian doors, high speed vehicle doors, fire doors, and overhead doors.


  • 3 patents.
  • Prior proprietary product design and development for the overhead door industry including sectional doors, rolling steel doors, truck doors and door operators.
  • Ongoing participation in the door industry for Code and Standards development.
  • Member of STP committee that maintains and updates UL 325.
  • Engineering consulting relating to testing and certification of hurricane-resistant door products.

Windsor Door, Little Rock, Arkansas. 5/93-5/97
Manager of Research and Development

  • Provided engineering expertise and testimony in litigation issues.
  • Active in the technical committees of DASMA.
  • Familiarity with Standard Building Code, Florida Building Code, NFPA 80, NFPA 105, and ASCE 7 windloading and fire codes.
  • Familiarity with UL-325 relating to garage door opener safety.
  • Fire door systems.
  • Co-development a photocell system for garage door openers.
  • Expertise in sheet metal products.
  • Experienced in finite-element analysis.
  • Proficient with Pro/Engineer software.

Overhead Door R&D/Engineering, Dallas, TX. 2/85-5/93
Manager of Structures

  • Provided engineering expertise and testimony in litigation issues.
  • Failure mode analysis on new products.
  • Custom product certifications for windload and oversize requirements.
  • Co-authored the corporate software for spring calculations.
  • Expert in track and counterbalance systems.
  • Lesser involvement with dock levelers, truck doors, high-speed rollup doors, and electric operators.

Drilco Industrial, Div. of SII, Midland, TX. 8/81-1/85
Product engineer

  • Design and manufacture of drilling equipment for mining and other non-oilfield applications.
  • Developed both "big hole" and "raise drill" bits ranging in diameters from five to twelve feet.
  • Experience in large weldments, threaded connections, non-destructive ultrasonic inspection, machining operations and heat treatment.
  • Briefly served as metallurgist at the on-site heat treating/carburizing facility.

John Deere Plow and Planter Works, Moline IL. 1/80-8/81
Product engineer

Contributed to the development of the largest planter built by John Deere including:

  • Hydraulic operation and leveling.
  • Stress measurement and reduction using strain gages, finite element and dynamic motion analysis.

Seminars / Short Courses completed

  • Advanced Principles of Fire Dynamics (24 hours, 2016)
  • America Invents Act: A New Patent System (ASME NTX, 2012)
  • Non-Linear FEA: Solving Real World Problems with Abaqus FEA (ASME 7/2012)
  • Creep Failure of Plastics by Jeffrey Jansen (SPE 1/2012)
  • Fatigue of Plastics by Jeffrey Jansen (SPE 5/2011)
  • Metallurgy for the non-Metallurgist (30 hours, 2011)
  • Windload Design Criteria II (4 hours, 2011)
  • Concrete anchors and ACI 318 (Simpson Strong-Tie 6/2011)
  • Component Failure Analysis: Methodology, Mechanisms, and Case Studies (4/2010)
  • Environmental Stress Cracking and Other Solvent Effects (11/2009)
  • Finding and Preventing Product Failures (in plastics) (SPE 4/2003)
  • Plastics Fracture Analysis (SPE 4/2002)
  • Plastics Failure Analysis (SPE 4/2002)
  • Failure Analysis of Plastic Products by Stress Analysis Methods (SPE 4/2002)
  • AAADM Certified Inspector for automatic pedestrian doors. (AAADM 10/2001)
  • AAADM Inspector training: Re-take course for updates. Audit only (1/2007)
  • Design & Behavior of Bolted Joints (ASME)
  • Fracture Mechanics Approach to Life Prediction (ASME)
  • Uniform Plumbing Code (NTT Inc)
  • Rock Mechanics (related to drilling and tunneling) (Univ. of Wisconsin)
  • Pro/E basic and sheetmetal (Parametric Technologies)
  • Non-destructive Ultrasonic Inspection (Drilco)