Patent ID: 7186075

Claim:
A mini-fan ( 26 ; 126 ) for installation in a recess ( 24 ; 124 ) of a wall ( 22 ; 122 ), which wall is equipped on the periphery of the recess ( 24 ; 124 ) with a plurality of retaining members ( 28 ; 128 , 129 ), said fan comprising, for air guidance, a housing ( 36 ; 136 ) that, in an installed position, projects, with a housing portion ( 127 ) approximately complementary to the recess ( 24 ; 124 ) of the wall, into the recess ( 24 ; 124 ) of the wall ( 22 ; 122 ); the mini-fan having at least one part ( 38 ; 138 ), shaped like an O-ring, attached to the periphery of that housing portion and made of an elastomeric material, with which part the fan ( 26 ; 126 ) is introducible, upon its installation with displacement along the wall ( 22 ; 122 ) into the retaining members ( 28 ; 128 , 129 ) in order to bring the elastomeric part ( 38 ; 138 ), in an installed position, at least locally, into sealing contact against the wall ( 22 ; 122 ).