Patent ID: 9074534
Filing Date: 2015-07-07
Classification: F02C,F02K

Abstract:
1. A seal for a duct, said duct having a upstream portion and a downstream portion, said upstream portion and said downstream portion separated by a first gap, said seal comprising: a first portion having a length greater than a width of said first gap between said upstream portion and said downstream portion, said first portion having a first thickness in a direction substantially perpendicular to said length of said first portion, a first upstream end, and a first downstream end; a second portion having a length greater than a width of said first gap between said upstream portion and said downstream portion, said second portion having a second thickness in a direction substantially perpendicular to said length of said second portion, a second upstream end, and a second downstream end, wherein said first thickness is thicker than said second thickness; an attachment between said first portion and said second portion such that said first portion and said second portion move relative to each other, wherein said first portion is inside said duct and said second portion is outside of said duct, wherein said attachment comprises: wherein said first portion and said second portion are spring loaded against said duct upstream portion and said duct downstream portion; and wherein each said first portion and said second portion are arcuate along substantially the entire length of said first portion and the entire length of said second portion, respectively, and a concave side of the first portion faces a concave side of the second portion.