Patent ID: 7201378

Claim:
A strip brush seal device for effecting a seal between a rotary shaft and one component, the rotary shaft extending through said one component and being in a mating relation with and relatively rotating against said one component, said strip brush seal device comprising: a) a strip brush seal including a mounting portion and a seal portion, said mounting portion being disposed in an outer circumference of an annularly-shaped body, said annularly-shaped body being formed by arranging a plurality of thin rectangular seal strips along a circumference of said rotary shaft, said seal portion being located in a radially inward portion of said annularly-shaped body; and b) a back plate being disposed in an opposite side of said strip brush seal with respect to a fluid; wherein each said seal strip includes a stoppage portion and a lifting portion, said stoppage portion being disposed in a radially outward portion of said seal strip relative to said seal portion, said lifting portion constituting a radially inward portion of said seal strip, said stoppage portion being arranged at a first angle relative to a tangential direction of the circumference of said rotary shaft at a point corresponding to a free end tip of said seal strip, said lifting portion being arranged at a second angle to the tangential direction of the circumference of said rotary shaft at the point, said second angle being in the range of from 0 to 40 degrees, said first angle and said second angle being pre-formed with said seal strip before pressing against said shaft, and wherein said first angle is greater than said second angle.