About: http://webisa.webdatacommons.org/50653320

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 mechanism of claim 7 wherein said spring is a horizontally acting tension spring having a free length to available deflection ratio of 10:1, and a zero deflection when said pair of connected cams are in said raised position.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com