Patent ID: 8827241

Claim:
A door for closing an opening ( 2 ) in a chamber wall ( 3 ) of a vacuum chamber ( 4 ) from atmosphere, comprising: a closure element ( 1 ), which is fastened to at least one rod ( 9 , 9 ′, 9 ″) and which can be adjusted between an open position in which the closure element releases the opening ( 2 ), an intermediate position, in which the closure element covers the opening ( 2 ) but is spaced apart from a seat ( 7 ) surrounding the opening ( 2 ), and a closed position in which the closure element is pressed against the seat ( 7 ), a door body ( 10 ) that carries the at least one rod ( 9 , 9 ′, 9 ″) and the closure element ( 1 ), and which for adjusting the closure element ( 1 ) between the intermediate position and the closed position can be tilted in reference to the chamber wall ( 3 ) about a tilting axis ( 20 ), and at least one tilting actuator ( 25 , 25 ′, 26 , 26 ′) which includes an inner cavity ( 27 ) into which compressed gas is introducible in order to tilt the door body ( 10 ) about the tilting axis ( 28 ), at least one wall ( 39 ) limiting the inner cavity ( 27 ) of the tilting actuator ( 25 , 25 ′, 26 , 26 ′) is at least one of elastic or flexible fashion at least over a section of its extension and is supported on at least one of a contact surface ( 38 ) of the door body ( 10 ), or on a contact surface ( 37 ) of the chamber wall ( 3 ), or of a fastening part ( 21 ) held on the chamber wall ( 3 ) wherein first and second of said tilting actuator ( 25 , 26 ) are respectively arranged on opposite sides of the tilting axis ( 20 ), of each of which the at least one wall ( 39 ) respectively limiting the inner cavity ( 27 ) is embodied at least one of elastically or flexibly over at least a section of its extension and is supported on at least one of the contact surface ( 38 ) of the door body ( 10 ) or on the contact surface ( 37 ) of the chamber wall ( 3 ) or of the fastening part ( 21 ) held at the chamber wall ( 3 ).