"An early warning system for a trailer drawbar" An early warning system for a trailer drawbar An early warning system for a trailer drawbar comprises an alarm switch configured for connection to the towing dolly, and; a trigger means connected to the towing dolly and configured to activate the alarm switch if a safe operating angle between the towing dolly and towing vehicle is exceeded. Figure 4
An early warning system for a trailer drawbar
2016-10-13
Patent
Electronic Resource
English