Grove US LLC

Dennis W Eckstine

William W Banks

Jon E Fleagle

Francis R Eyler

The luffing angle measurement system includes a non-contact distance measuring device mounted on the nose section of a first boom. The non-contact distance measuring device measures either a distance to a second boom pivotally connected to the first boom or measures a time delay between the transmission of electromagnetic energy towards the second boom and reception of electromagnetic energy reflected from the second boom. A controller then converts the measured distance or the measured time delay into a luffing angle.

Luffing angle measurement system

The aerial work platform including a pothole and/or obstacle avoidance system according to the present invention includes a non-contact distance measuring device mounted to an end of the aerial work platform chassis. The non-contact distance measuring device measures a distance to the ground along a predetermined angle, and generates a first signal based on the measured distance. In response to the output of the non-contact distance measuring device, a motor controller and/or brake controller of the aerial work platform control operation of a motor and/or brakes, respectively, to assist an operator of the aerial work platform in avoiding potholes and/or obstacles.

Aerial work platform with pothole and/or obstacle detection and avoidance system

In the anti-two block device, a non-contact measuring device detects in one form or another the distance between a boom nose and a load-bearing member supported thereby. If the distance detected is less than a predetermined threshold value, the device triggers a warning or other operation to assist an operator in preventing anti-two blocking.

Anti-two block device using non-contract measuring and detecting devices

The protection system for outriggers of a chassis includes a non-contact distance measuring device, associated with at least one of the outriggers and the chassis, mounted on one of the outriggers and the chassis. The non-contact distance measuring device measures the distance to the ground along a predetermined angle, and generates a warning signal based on the measured distance. A controller stops operation of the outriggers in response to the warning signal.

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Waynesboro, PA, United States of America

Dennis W Eckstine