About: http://webisa.webdatacommons.org/397965290

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	However, air bellows 344, a spring bias, weights, counterweights, or other suitable means may be utilized to increase or decrease the contact force.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com