Patent ID: 6877529

Claim:
Improved sealing cap in particular for a collector tube in an air-conditioning unit for vehicles suitable for being axially inserted in a cylindrical portion ( 11 ) at an end of said collector tube, comprising at least two molded elements able to be coupled ( 12 , 13 , 22 ), a first molded element ( 12 ) of said at least two molded elements having an internal recess ( 32 ) with at least one transversal wall ( 33 ), protruding at one end suitable for receiving an element that can be coupled, and being equipped with a portion ( 16 ) with the same diameter as the collector tube and at least one portion with a smaller diameter ( 17 , 21 ), said at least one portion with a smaller diameter ( 17 , 21 ) extends in a further portion ( 18 , 23 ) of smaller diameter suitable for stably receiving a second element ( 13 , 22 ) to define at least one seat ( 15 , 150 ) for a sealing ring ( 14 ) when said at least two elements are coupled, said portion with a smaller diameter ( 17 , 21 ) than said portion ( 16 ) with the same diameter as the collector defining a base of said seat ( 15 , 150 ), a side surface ( 19 , 28 ) of said second element ( 13 , 22 ) and a side surface ( 20 , 29 ) of said portion with the same diameter as the collector ( 16 ) respectively defining sides of said seat ( 15 , 150 ), said cap including a third element ( 22 ) adapted to be coupled to said first element ( 12 ), said first element ( 12 ) being equipped with a further portion ( 17 , 21 ) with a smaller diameter suitable for defining a second further seat ( 15 , 150 ) for a sealing ring ( 14 ) upon stable coupling of said first and third elements ( 12 , 22 ), said further portion with a smaller diameter ( 17 , 21 ) defining a base of said second seat ( 150 ), a side surface ( 19 , 28 ) of said third element ( 13 , 22 ) and a side surface ( 20 , 29 ) of said portion with the same diameter as the collector ( 16 ) respectively defining sides of said further seat ( 15 , 150 ).