About: http://webisa.webdatacommons.org/314683955

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	Other embodiments may also employ different types of couplings and other mechanisms to transfer mechanical energy from a motor or other movement power source to one or more rotating heads.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca