About: http://webisa.webdatacommons.org/142921588

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	Although the urging mechanism shown in FIG. 7 is a helical compression spring, a variety of other types of urging mechanisms may be utilized.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr