Patent ID: 6935634
Filing Date: 2005-08-30
Classification: F16J

Abstract:
1. A packing spring for biasing an arcuate seal ring segment radially inwardly toward a rotor of a steam turbine, said packing spring consisting of: a flat, elongated spring body of specified length, width and thickness dimensions, a flange at one end of said main spring body and a bend in said spring body located substantially midway along the length dimension of said spring body such that one portion of said spring body is bent at an angle of between about 5 and 15° relative to an adjacent portion of said spring body, wherein said one end and an opposite end of said spring body are adapted to engage a stationary casing of said steam turbine and portions of said spring body between said ends and said bend are adapted to engage said seal ring segment so as to bias the spring seal segment in a radial direction.