Peter J. Weller


Peter J. Weller

Peter J. Weller Design Engineering Group

2006 Curtis Ave
Redondo Beach CA, 90278

Short Description:
BS and MS degrees in Mechanical Engineering and is a registered professional engineer.
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BIO / Resume / CV:
EW #673 obtained BS and MS degrees in Mechanical Engineering and is a registered professional engineer in California. He has worked as design engineer and chief engineer for several companies and has owned companies involved in fabrication of truck bodies, accessories, and construction equipment. He has one patent in towtruck design and has designed and built mechanical and hydromechanical products for trucks, the construction industry, and laboratories.

BS, Mechanical Engineering, Cornell University
MS, Mechanical Engineering, Stanford University
Registered Professional Engineer (Mechanical) in California

Areas of expertise include mechanical design; hydraulic design; steel fabrication; towtruck design, fabrication, operation, and safety; truck body design; heat transfer and thermal analysis.
Hehas a patent for an autoloading design for towtrucks.
Hehas provided expert witness services for suits involving towtruck design, thermal analysis/heat transfer, and hydraulic system operation.

EW #673 has experience both as an engineer and as a manufacturer. His engineering experience includes design, plant engineering, engineering analysis, and engineering supervision. His CAD capabilities include Solidworks, Cosmos, and Autocad. His manufacturing experience includes truck body fabrication installation, and repair; fabrication of construction equipment such as clamshells and loader buckets; and job shop steel and aluminum forming, cutting, and welding.

BS Mechanical Engineering, 1969, Cornell University
MS Mechanical Engineering, 1970, Stanford University
Pi Tau Sigma Mechanical Engineering Honorary Society

Professional Mechanical Engineer, California (No. 16493)

Automotive Lifting and Towing Apparatus, Sept 1994
(A hydraulically actuated arm which lifts the vehicle being towed by its tires and which is remotely controlled by the towtruck operator.)

Mechanical and Hydraulic Design
Towtruck Design, Manufacturing, Operation and Safety
Design, Fabrication, Operation, and Safety of:
Car carriers
Construction equipment
Automotive lifts
Steel Fabrication

Solid Works, Autocad, COSMOS Works FEA for stress analysis,
MS Office, MS Excel


(Professional engineer providing expert analysis and testimony.)

Car Carrier Failure. Evaluation of installation work done by a towtruck distributor which resulted in vehicle frame failure.

Auto Lift Collapse. Analysis of automotive lift design which resulted in damage to a vehicle being repaired and which threatened the safety of employees

Trash Truck System Overheating. Analysis of overheating problems resulting from the poor design of trash compactor truck bodies. The analysis included the development of a finite-difference thermal model of the compactor truck which accurately predicted the hydraulic fluid temperature variation through a daily cycle due to hydraulic heating and meteorological and solar effects.

Towtruck Failure. Expert testimony for a pretrial hearing involving the injury sustained by a towtruck operator when part of the towtruck lifting mechanism failed.

Auto Lift Accident. Analysis of an accident involving an inground auto lift in a repair shop. The accident resulted in injury to the mechanic when forklifts were used to remove a vehicle stuck on the lift.

(Owner of consulting firm providing engineering design and analysis services to industry.)

Debris Clamshell.He designed a hydraulic clamshell system for use on a telescopic handler to remove debris from the bottom of a liquid sulfur pit at an oil refinery. The clamshell was mounted on a 16 foot long extension so that it could reach from the boomhead of the handler to the deepest part of the pit. The clamshell system was designed with a heating system to prevent cooling and deposition of solid sulfur on the surface. All parts were designed to resist the chemical and thermal effects of 300F liquid sulfur.

Load Spreaders (Several). Hedesigned lifting devices to be used by crane operators for loading heavy cargo (up to 60,000 lb) onto cargo ships at LA harbor. All devices were designed in conformance with ANSI Standard No. 30.20 for lifting devices.

Hydraulic Clamshell. Hedesigned a 5/8 cubic yard hydraulic clamshell for moving fill dirt at a construction site by means of a mobile crane.

(Co-owner of company which manufactured construction equipment. he personally designed and supervised fabrication of all products.)

Wallbreaker. An attachment for excavator type construction equipment which is used to remove vertical walls of buildings while minimizing the amount of debris falling to the outside of the wall. It is especially useful for tearing down buildings which are in close proximity to other structures.

Clamp Buckets. Buckets for wheel loaders for handling straw, trees, and greenwaste. Clamps were hydraulically actuated and used for retaining materials in bucket while loading trailers.

Rock Tongs. 20,000-pound cable-actuated tongs for allowing cranes to move rocks weighing up to 45 tons for harbor construction.

Scrap Grapples. Hydraulically actuated two jaw grapples for moving metallic and nonmetallic scrap with excavators.

Swivel Buckets. Buckets for cleaning agricultural ditches with integral hydraulic mechanisms for varying the angle the bucket makes with the ground,

Excavator and Loader Buckets. Various straight and V shaped buckets for excavators and wheel loaders.

(Co-owner of company manufacturing towtrucks, car carriers, and accessory towing equipment. Hepersonally designed, marketed, and supervised fabrication and installation of all products developed by Pro-West.)

Selfloading Crossarm. This is a device which allows a towtruck operator to attach and lift a vehicle hydraulically from a remote position and is one of the few such devices successfully in use.

Ground Level Loader. This is a car carrier which has a bed that lowers to a completely horizontal position on the ground and is used for loading and carrying vehicles with extremely low ground clearances.

Drop Pivot Car Carrier. This is a car carrier that has a lowered bed pivot geometry and horizontally mounted tilt cylinders. These design features allow for easier installation of the bed system onto the truck and for a lower effective load angle.

Motorcycle Carrier Wheel Lifts. This device allows the towtruck operator to easily carry motorcycles on any common brand of wheel lift towtruck. It is easily stored and easily deployed and allows the motorcycle to be securely carried in a manner consistent with the requirements for California Highway Patrol contract towing companies.

(Chief engineer for company manufacturing automobile lifts. Responsibilities and special projects are listed.)

CAD System Implementation. He implemented the use of Solid Works solid modeling software for design and configuration control.

Lift Certification. Hepretested and coordinated the third-party testing of Benwil two post above ground lifts for certification by ALI, the auto lift trade organization, according to the ANSI/ALI ALCTV 1998, the CSA 68, and UL standards for design and operation of automotive lifts.

Inground Lift Retrofit. Hediagnosed a chronic chattering problem with inground lifts, redesigned the lifts to correct for the problem, and designed retrofit kits for correcting lifts in the field.

Lift Redesign. Hewas responsible for design improvements for the Benwil product line. All changes were made with Solid Works solid modeling software. Stress analysis was carried out using both manual methods and COSMOS Works FEA software.

(Engineer and engineering manager at TRW Inc., Redondo Beach CA.)

Mirror Fusion Manufacturing. Hewas responsible for the $1.5 Million mechanical fabrication package for Mirror Fusion Technology Facility-B Project, in which five ten-foot diameter vacuum chambers were built for conditioning neutral particle beams prior to entry into a nuclear plasma.

Isotope Separation. Hewas responsible for fabrication of a vacuum chamber and peripheral hardware for a Special Isotope Separation unit for Los Alamos National Lab.

Superconducting Electron Beam. Hewas responsible for mechanical fabrication for the CEBAF project which involves a superconducting chamber for electron beam acceleration. This project required dieforming, machining, electron beam welding, and acid etching of niobium.

Offshore Platform. Hewas Project Manager for a $1.4 Million study to determine the structural integrity and effects of environmental loads on a drilling platform in the Gulf of Mexico. Under hisdirection, subcontractors were used for NASTRAN analysis of the platform structure and for onsite structural and environmental inspection and sampling both above and below the water line. TRW personnel under his supervision analyzed test and inspection data to recommend use of the platform as a site for hazardous waste incineration.
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