Patent ID: 9383037
Filing Date: 2016-07-05
CPC Classification: F16J,F16K,H01J

Claim Text:
1. A device for closing an opening in a chamber wall of a low-pressure or vacuum chamber, comprising at least one movably supported closure element, at least one main body with a through-opening and at least one seat, which surrounds the through-opening, wherein the through-opening can be made congruent or is congruent with the opening in the chamber wall, at least one open position of the closure element, in which the through-opening is released by the closure element and at least one closed position of the closure element, in which the through-opening is completely closed by use of the closure element, at least one elastic seal with at least one inflated inner chamber, with the seal in the closed position being arranged between the closure element and the seat sealing the closure element against the seat, and the elastic seal in addition to the inflated inner chamber comprises at least one outer surrounding chamber that receives and captures fluid from the inflated inner chamber in case of a leak in the inflated inner chamber, the at least one outer surrounding chamber is closed or directs the fluid to an exterior space located outside of the low-pressure or vacuum chamber through a fluid channel connected to a fluid outlet opening in the at least one outer surrounding chamber, the fluid channel is formed at least in sections as a part of the at least one closure element.