The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 05, 2021
Filed:
Feb. 06, 2019
Applicant:
United Technologies Corporation, Farmington, CT (US);
Inventors:
Georgi Kalitzin, West Hartford, CT (US);
Gorazd Medic, West Hartford, CT (US);
Om P. Sharma, South Windsor, CT (US);
Junsok Yi, South Glastonbury, CT (US);
Dilip Prasad, North Granby, CT (US);
Assignee:
Raytheon Technologies Corporation, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 11/00 (2006.01); F04D 29/16 (2006.01); F04D 29/32 (2006.01); F04D 29/68 (2006.01);
U.S. Cl.
CPC ...
F01D 11/001 (2013.01); F05D 2250/25 (2013.01); F05D 2270/173 (2013.01);
Abstract
A casing treatment comprising a hub having a surface, the hub being rotatable about an axis within a casing of a gas turbine engine compressor, at least one spiral groove formed in the surface extending axially relative to the axis, a stator blade fixed to the casing, wherein a tip of the stator blade is proximate to the at least one spiral groove.