The patent relates to a device to impact on an obstruction and stop a propeller before its moving blades can impact thereon. The device has extensions beyond the path of the propeller blades which extensions are attached to micro switches to cut-off power to the propellers.
Safety Cut-off for Propellers
1971
5 pages
Report
Keine Angabe
Englisch
PROPELLERS Feathered propellers for flexibility
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