About: http://webisa.webdatacommons.org/401199192

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 actuators 424 can be operated by mechanical, electrical, pneumatic, or other means and can have mechanical springs 426 to return the wedges to their normal outward position.The linear motion und
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com