A floor box cover assembly includes a cover and a ring assembly. The cover is pivotally connected to the ring assembly. The ring assembly rotates to allow the wires to extend through an access opening in the cover into the interior of a housing during use or to block the access opening in the cover to...http://www.google.fr/patents/US7193160?utm_source=gb-gplus-shareBrevet US7193160 - Floor box cover assembly
