NASA NTRS · 19640000004
Speed-sensing device aids crane operators
Abstract
So that crane operators can judge payload movements accurately, a friction-driven multilobed cam device energizes a buzzer and indicator lamp in the crane cab. The signal frequency of this speed sensor has a sensitivity to hoist movement of 1/8 inch.
Keep this discovery
Explore connections, maps & timelines
1964-10-01. Speed-sensing device aids crane operators. https://ntrs.nasa.gov/citations/19640000004
Cite the original work for its findings. Save a collection to share your selection of sources.