Title: Connection between vane arm and unison ring in variable area stator ring

Abstract: In the connection between the unison ring and the actuating arms carried by the several vanes of a variable stator ring in an axial flow compressor and providing for turning the vanes as the unison ring is moved, the pivot that must permit angular misalignment, relative rotation and axial movement is an elliptical-shaped bushing mounted on either the ring or arm and engaging a cylindrical surface on the other of the ring or arm. The bushing is normally mounted on a pin and the cylindrical surface is provided by a sleeve, the elliptical element having slidable engagement with the sleeve. The bushing may be a metallic spring or may be made of an elastomer.

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Inventors: Miller, Guy W. (Vernon, CT, US)
Norris, James R. (Bolton, CT, US)

Application Number: 691920
Filing Date: 1976-06-01
Publication_date: 1977-09-27
Assignee: United Technologies Corporation (Hartford, CT)
Primary Class(es): 415/147 403/225, 415/9, 415/160, 464/60, 464/87
Other Classes:
US Patent Ref:

2061985	Nov, 1936	Sauers	403/226.
2842305	Jul, 1958	Eckenfels et al.	415/147.
3011605	Dec, 1961	Hungerford et al.	192/8.
3303992	Feb, 1967	Johnson	415/160.
3685920	Aug, 1932	Burge	415/160.

Other Refs: 1,575,5382,062,328762,883

Jan, 1970	DT
Jun, 1971	DT
Dec, 1955	UK

Primary Examiner: Husar, C. J.
Assistant Examiner:
Attorney: Warren; Charles A.