Patent ID: 7731574

Claim:
A vent assembly comprising: a base for securement into an opening; a cover connected with said base, said cover movable between a closed and an open position; a mechanism for raising and lowering said cover between said open and closed positions, said mechanism including a strut system connected with said cover at two positions spaced from one another such that when said cover is in said closed position, a retention force provided by said strut system is distributed about the cover, said strut system includes a U-shaped strut coupled with a pair of brackets mounted on said cover for raising and lowering said cover; a pair of bearing blocks on said base for receiving a connecting portion of said U-shape strut for positioning said U-shaped strut on said base; and wherein said mechanism includes an arm connected with said strut system, said arm being slidably coupled with a leg of said strut system and said leg being slidably coupled with said cover.