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:
Mar. 12, 2019
Filed:
Feb. 16, 2015
United Technologies Corporation, Farmington, CT (US);
John E. Holowczak, S. Windsor, CT (US);
Brian M. Holley, Eastford, CT (US);
UNITED TECHNOLOGIES CORPORATION, Farmington, CT (US);
Abstract
A variable vane system includes an outer platform, an inner casing radially inward from the outer casing and a vane extending between the inner and outer casings defining a vane axis. An inner vane stem is engaged with the inner casing and an outer vane stem is engaged with the outer casing. The system includes a bearing gap defined radially with respect to the vane axis between each of the inner and outer casings and respective vane stems for allowing the vane to rotate about the vane axis for varying angle of attack. The system includes a pressurized air supply inlet in fluid communication with at least one of the bearing gaps to form a stem air bearing to intermittently float at least one of the vane stems for controlled rotation about the vane axis.