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US 2006/0214378 A1Published application
Brush seal with spiral groove back plate
OwnerXiaoqing Zhenginventor
Life of this patent
Estimating the term…
Abstract
A brush seal includes a plurality of bristles, a front plate, and a back plate abutting the bristles, the back plate including at least one spiral groove therein to pressure balance the brush seal.
Claims43
A brush seal comprising:
- a plurality of bristles;
- a front plate;
- and
- a back plate abutting the bristles, the back plate including at least one spiral groove therein to pressure balance the brush seal.
1 more element
A brush seal comprising:
- a plurality of bristles;
- a front plate;
- and
- a back plate abutting the bristles, the back plate including:
- an inner diameter and an outer diameter, and
- a first circular groove proximate the inner diameter;
- and
- at least one spiral groove extending continuously around the back plate at least twice from the first circular groove to an area proximate the outer diameter of the back plate to pressure balance the brush seal.
5 more elements
A brush seal comprising:
- a plurality of bristles;
- a front plate;
- and
- a back plate abutting the bristles, the back plate including at least one spiral groove therein and a circular groove proximate an outer diameter of the back plate, the spiral groove terminating at the circular groove to pressure balance the brush seal.
1 more element
A brush seal comprising:
- a plurality of bristles having a slant angle;
- a front plate;
- and
- a back plate abutting the bristles, the back plate including:
- a first circular groove proximate the inner diameter of the back plate,
- a second circular groove proximate the outer diameter of the back plate, and
- a plurality of spiral grooves each extending at an angle opposite the slant angle from the second circular groove to the first circular groove to pressure balance the brush seal.
4 more elements
Dependencies are inferred from the claim text.