Seal for aircraft boarding stairs or boarding bridge

1. A seal for aircraft boarding stairs or a boarding bridge, including a U-shaped bellows ( 5 ) spanning a gangway bottom plate ( 10 ), said bellows ( 5 ) comprising a flexible frame ( 3 ) at its one open end, said flexible frame having a bumper ( 4 ) made from an elastically resilient material, wherein the U-shaped bellows ( 5 ) comprises two legs ( 5 a ) that are joined together by a web ( 5 b ), said bellows ( 5 ) being separable at least in the region of at least one of the two legs ( 5 a ) and wherein the flexible frame ( 3 ) forms a pocket ( 3 f ) in the region of the web ( 5 b ) of the bellows ( 5 ), said flexible frame ( 3 ) of the leg ( 5 a ) and/or of the web ( 5 b ) of said bellows ( 5 ) comprising a tonque ( 3 aa , 3 cc for reception by the pocket ( 3 f ).

2. The seal for aircraft boarding stairs or for an aircraft boarding bridge as set forth in claim 1 , whereby the bellows ( 5 ) is configured to be pleated or a corrugated bellows, the discrete pleats or corrugations being joined together by bellows frames ( 11 ), said bellows frames ( 11 ) comprising, in the region of the separation in the bellows ( 5 ), a transmission profile ( 15 ) for connection, and said corrugations or pleats being joined together overlapping each other in the region of the separation by means of connecting means such as hook and loop tapes ( 35 ).

3. The seal for aircraft boarding stairs or for an aircraft boarding bridge as set forth in claim 1 , whereby the tongue ( 3 cc ) is flexible in the pocket ( 3 f ) by means of screws.

4. The seal for aircraft boarding stairs or for an aircraft boarding bridge as set forth in claim 1 , whereby the tongue ( 3 aa , 3 cc ) is fixable in the pocket ( 3 f ) by a snap-fit connection.

5. The seal for aircraft boarding stairs or for an aircraft boarding bridge as set forth in claim 4 , whereby both the tongue ( 3 aa , 3 cc ) and the pocket ( 3 f ) comprise a profile ( 6 ).

6. The seal for aircraft boarding stairs or for an aircraft boarding bridge as set forth in claim 1 , whereby the pocket ( 3 f ) is formed by two superposed and spaced-apart frame elements ( 3 ba , 3 bb ) that are connectable together such as by screws or rivets.

7. The seal for aircraft boarding stairs or for an aircraft boarding bridge as set forth in claim 1 wherein said bellows ( 5 ) is separable in the region of the two legs ( 5 A).

8. The seal for aircraft boarding stairs or for an aircraft boarding bridge as set forth in claim 5 wherein said profile is in the form of a serrated profile.

9. The seal for aircraft boarding stairs or for an aircraft boarding bridge as set forth in claim 5 wherein said profile is in the form of a scaling.