About: http://webisa.webdatacommons.org/441042584

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 vertical reciprocating motion to moving elements can be by means of a hydraulic cylinder and ram but is not limited to that device and other devices that can provide a reciprocating movement may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com