Patent ID: 6273136
Filing Date: 2001-08-14
Classification: B64D,F16K,F24F,Y02T,Y10T

Abstract:
A multistage valve, more particularly a cabin air exhaust valve in an aircraft comprising a smaller first valve stage (20; 60; 100) and a larger second valve stage (30; 70; 110) arranged in a valve port (11; 15; 31) and a drive mechanism (40; 90), said first valve stage (20; 60; 100) and said second valve stage (30; 70; 110) being operatively connected to said drive mechanism (40; 90) and said drive mechanism (40; 90) being constructed and arranged to actuate and always open said first valve stage (20; 60; 100) prior to and separately from the subsequent actuation and opening of said second valve stage (30; 70; 110).