About: http://webisa.webdatacommons.org/151398513

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	A spring 650 also may be used to return the seal carrier 520 or otherwise.Other types of actuating mechanisms may be used herein so as to position the moveable seal packing rings 240 as desired.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com