U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Impingement manifold

Patent 5100291 Issued on March 31, 1992. Estimated Expiration Date: Icon_subject March 28, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2549819

3641766

Gas turbine engine
Patent #: 4017207
Issued on: 04/12/1977
Inventor: Bell ,   et al.

External gas turbine engine cooling for clearance control
Patent #: 4019320
Issued on: 04/26/1977
Inventor: Redinger, Jr. ,   et al.

Turbine case cooling system
Patent #: 4053254
Issued on: 10/11/1977
Inventor: Chaplin ,   et al.

Structural cooling air manifold for a gas turbine engine
Patent #: 4214851
Issued on: 07/29/1980
Inventor: Tuley ,   et al.

Rotor/shroud clearance control system
Patent #: 4230436
Issued on: 10/28/1980
Inventor: Davison

Compressor structure adapted for active clearance control
Patent #: 4268221
Issued on: 05/19/1981
Inventor: Monsarrat ,   et al.

External gas turbine engine cooling for clearance control
Patent #: 4279123
Issued on: 07/21/1981
Inventor: Griffin ,   et al.

Active clearance control system for a turbomachine
Patent #: 4329114
Issued on: 05/11/1982
Inventor: Johnston ,   et al.

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Inventor

Assignee

Application

No. 500609 filed on 03/28/1990

US Classes:

415/115, WITH PASSAGE IN BLADE, VANE, SHAFT OR ROTARY DISTRIBUTOR COMMUNICATING WITH WORKING FLUID60/806, And cooling165/82, Relieving or absorbing means supports temperature modifier in heat exchanger165/169, Wall forms enclosure248/901, SUPPORT HAVING TEMPERATURE OR PRESSURE RESPONSIVE FEATURE285/41, WITH HEATING OR COOLING403/28, UTILIZING THERMAL CHARACTERISTIC, E.G., EXPANSION OR CONTRACTION, ETC.403/408.1, HAVING A JOINING PIECE EXTENDING THROUGH ALIGNED OPENINGS IN PLURAL MEMBERS415/116, WITH DIVERSELY ORIENTED INLET OR ADDITIONAL INLET FOR DIVERSE FLUID (E.G., HEATING, COOLING OR MIXED WORKING FLUID, ETC.)415/135, Resilient415/136, Radially sliding415/177, INCLUDING HEAT INSULATION OR EXCHANGE MEANS (E.G., FINS, LAGGING, ETC.)415/213.1Casing with mounting means

Examiners

Primary: Look, Edward K.
Assistant: Verdier, Christopher

Attorney, Agent or Firm

Foreign Patent References

  • 2062763 GB 05/13/1981

International Class

F01D 009/00

Abstract

Clearance control is provided by circumferentially segmented cooling manifolds having spray bars located radially outside selected components of the stator casing. Cooling air is directed onto stator components and returns immediately through circuitous paths to improve uniformity of cooling. The spray bars extend through limited circumferential angles to limit distortion due to uneven heating.

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