Hydraulic Design Expert 33220 CA(S)

Expertise Description

I have over 40 years experience in mechanical engineering. My experience includes design engineering and chief engineering for several companies and ownership of companies involved in fabrication of truck bodies, accessories, and construction equipment. I have more than 10 years expert witness experience with consultations, deposition, and courtroom testimony.

Areas of Expertise

Expert Witness

My expert witness experience includes: Product mechanical design and fabrication of industrial and mobile equipment; Mechanical engineering and hydraulic engineering analysis; Accident causation involving tow trucks, car carriers, trash trucks, and lift gates; Auto lift and vehicle parking lift failure analysis; Construction, pipeline, and agricultural equipment failure analysis.

Consulting Experience

My consulting services include: Mechanical and hydraulic design; Design defects/product liability; Equipment performance; Industrial equipment accident analysis.

Relevant Experiences

As an expert witness, I have worked on at least one case involving a cherry picker/manlift and at least one case involving a scissorlift type of manlift. In the latter case, the machine tipped over and the operator was killed. The major problem I was able to identify with the machine was an unsafe amount of play (due to wear) in the bearings for the lift, which allowed the manlift platform to exceed safe angles of operation. I have worked on many other cases involving similar industrial, construction, and agricultural heavy equipment, including forklifts, telescopic handlers, loaders, dump trucks, transfer trucks, pipeline padder machines, truck lift gates, and excavators.

I am a degreed mechanical engineer (BS, Cornell; MS, Stanford), am a registered Professional Engineer in California, and have over 45 years experience in engineering and manufacturing, including 15 years as an expert witness. In the past, I owned a manufacturing company which designed and built attachments for heavy equipment, including loader buckets, excavator buckets, rock tongs for cranes, clamshells, and scrap grapples. Another company I owned prior to that manufactured and installed towtruck and car carrier bodies.

My expertise is in the design and manufacture of the body of the tow truck, and installation of the body on the truck chassis cab.


BSMechanical EngineeringCornell University
MSMechanical EngineeringStanford University

Licenses Certifications

California Professional Engineer (Mechanical)
Registered DOT Design Certifying Engineer for Cargo Tank Vehicles

Awards & Affiliation

Guest Lecturer
Hydraulics in Mechanical Engineering
California Polytechnic University/Pomona

Primary Affiliation

American Society of Mechanical Engineers

Partial List of Consulting Expert Witness Cases