Highway vehicle with hydraulically driven power dolly

Hitch adapter

Hitch adapter

Hydraulic drive assist for scrapers

Land towing vehicle for small aircraft

Method and tractor for towing aircraft

Motorized semi-trailer

Motorizing device for a trailer drawn by a tractor

Multi-combination vehicle incorporating a power trailer

Multi-combination vehicle incorporating a power trailer

Multi-engine, articulated vehicle apparatus

Multi-unit articulated road train propulsion system

Off-road vehicle

Planetary drive self-propelled irrigation apparatus

Power drive system for road vehicles

Self-powered towing servomechanism

Speed control apparatus for powered trailer

Support for a PTO hookup assembly

System for powering a trailer

System for the control of multiple engines in a...