Air diffuser having improved bridges for supporting air control blades

An air diffuser comprising:

• a) a pair of parallel spaced side rails;
• each rail having an elongate receiver;
• b) a pair of bridges slidably joined to said side rails;
• each of said bridges including an elongate body with slide feet positioned at opposite ends thereof;
• each of said bridge feet being captured in a respective side rail receiver such that said bridges are supported by said side rails but slidable therealong;
• each of said bridges also having an elongate slot formed of a bottom wall, rear wall and top wall;
• each of said bridges having a respective spring mechanism mounted in a slot thereof;
• each of said bridges also having a cover over each top wall;
• each of said covers having a radius approximately a thickness of an associated bridge so as to reduce drag on air passing each bridge;
• and
• c) a pair of air control blades;
• each blade being elongate and having a planar portion extending between a pair of bridges;
• each blade also having a pair of mounting pegs extending outward from opposite sides of a respective blade planar portion;
• said pegs being received in respective bridge slots;
• said blade planar portion opposite ends each being received against a respective spring member.

An air diffuser comprising:

• a) a first bridge including:
• i) a bridge body having an elongate slot;
• said slot having associated therewith a top elongate wall with a cover;
• said cover being arcuate and curving downward from near a rear thereof to near a front of said slot top wall so as to reduce drag on air passing said cover;
• and
• ii) a pair of slide feet mounted on respective opposite ends of said slot;
• b) a pair of side rails, each of said side rails including an elongate receiver slidably receiving a respective one of said slide feet;
• c) a second bridge spaced from said first bridge and secured to said side rails;
• and
• d) a pair of air control blades mounted between said first and second bridges.