Cleanroom filter unit
AssigneeABB Flakt AB
InventorBertil Larsson
Life of this patent
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Abstract
A filter unit for airtight attachment to a framework of a cleanroom ceiling includes a filter, a circumferential wall surrounding the filter, and a downwardly projecting sealing knife to be received in a sealant containing groove formed in said framework. The sealing knife includes vertical weldable wall elements interconnected by welding and mounted on the circumferential wall by airtight mounting means.
Claims3
A cleanroom filter unit for airtight attachment to a framework of a cleanroom ceiling, comprising a filter, a vertical circumferential wall surrounding said filter, and a sealing knife projecting downwardly from said circumferential wall to be received in a sealant containing groove formed in the framework of the clean room ceiling, said sealing knife being separately produced from vertical weldable wall elements, which are welded together, said separate sealing knife being mounted on said circumferential wall by airtight mounting means.
Dependencies are inferred from the claim text.