About: http://webisa.webdatacommons.org/15596402

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The horizontal wire loop structure 32 prevents the vertical lift rotors 25 from contacting any item, such as a wall, that approaches the rotor near its plane of rotation.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com