<http://webisa.webdatacommons.org/64526300>	<http://www.w3.org/ns/prov#value>	"FIG. 11A is a top view and partial cross-section of an alternative embodiment of the present invention showing a weight-responsive engagement block riding on a vertical guide and engaging a vertical ratchet bar; and" .
<http://webisa.webdatacommons.org/prov/278508089>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/64526300> .
<http://webisa.webdatacommons.org/prov/251483957>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/64526300> .
<http://webisa.webdatacommons.org/64526300>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/64526300>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.co.uk> .