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US 6,473,715 B1Granted
Luffing angle measurement system
AssigneeGrove U.S. L.L.C.
InventorDennis W. Eckstine
Life of this patent
Estimating the term…
Abstract
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.
Claims16
A luffing angle measurement system, comprising:
- a non-contact distance measuring device mounted on a nose section of a first boom, transmitting electromagnetic energy towards a second boom pivotally connected to the first boom, receiving electromagnetic energy reflected from the second boom, and measuring a distance to the second boom pivotally connected to the first boom, the non-contact distance measuring device mounted to the nose section of the first boom such that as a luffing angle between the second boom and the first boom increases, the measured distance output by the non-contact distance measuring device increases;
- and
- a controller converting the measured distance into a luffing angle.
A luffing angle measurement system, comprising:
- a non-contact measuring device mounted on a nose section of a first boom, transmitting electromagnetic energy towards a second boom pivotally connected to the first boom, receiving electromagnetic energy reflected from the second boom, and measuring a time delay between transmission of the electromagnetic energy and reception of the reflected electromagnetic energy, the non-contact measuring device mounted on the nose section of the first boom such that as a luffing angle between the second boom and the first boom increases, the measured time delay output by the non-contact measuring device increases;
- and
- a controller converting the measured time delay into a luffing angle.
Dependencies are inferred from the claim text.