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US 5,211,537 AGranted
Compressor vane lock
AssigneeUnited Technologies Corporation
InventorsTodd A. Langston, Kevin B. McDonnell, Thomas J. McCarty
Life of this patent
Estimating the term…
Abstract
Variable compressor vanes are locked into a selected position after testing. The usual sync ring and vane arms are removed. A vane lock joins adjacent vanes locking them into the selected position.
Claims7
A compressor arrangement with locked variable vanes comprising:
- a compressor casing;
- a plurality of valve stem openings in said casing, circumferentially spaced around said casing, and an inwardly facing vane abutment surface adjacent each opening;
- a plurality of vanes, each vane comprising an airfoil, a vane stem fixedly secured thereto, and a casing abutment surface adjacent said vane stem;
- said plurality of vanes circumferentially arranged in said openings with each vane abutment surface and a corresponding casing abutment surface in contact;
- a pair of flat parallel circumferentially extending flats formed on the vane stem of each vane;
- a radial threaded bolt opening in the end of each vane stem;
- a vane lock connecting two adjacent vane stems and bolted to said bolt openings;
- and
- said vane lock having a pair of resilient C-shaped lock arms at each end with one end of each arm in firm contact with one of said flats on said vane stem.
6 more elements
Dependencies are inferred from the claim text.