Patent ID: 8657298
Filing Date: 2014-02-25
Classification: F01D,F02C,F05D,F16J

Abstract:
1. A brush seal assembly, comprising: a rotor sealing surface; a side plate; a machine housing; a backing plate operatively coupled proximate an upper surface of the backing plate to the machine housing and located in an initial position and having a backing tip and at least one backing tooth each projecting from a surface of the backing plate, wherein the at least one backing tooth has a tooth surface defining a tooth radially inner diameter and the backing tip having a tip surface defining a tip radially inner diameter, a tooth clearance being measured between the tooth surface radially inner diameter and the rotor sealing surface and a tip clearance being measured between the tip surface radially inner diameter and the rotor sealing surface, and the tooth clearance being less than the tip clearance; a plurality of bristles located between the side plate and the backing plate, the plurality of bristles including an end portion for sealing to the rotor sealing surface, and wherein the backing tip abuts against the plurality of bristles, wherein the backing tip directly abuts an end of the plurality of bristles located near the rotor sealing surface; and a biasing member positioned between the machine housing and the backing plate, and contacting both the housing and the backing plate for exerting a biasing force upon the backing plate in a direction towards the sealing surface, the at least one backing tooth configured for contacting the rotor sealing surface.