Patent Number: 7,422,413

Title: Shroud tip clearance control ring

Abstract: The present invention is a shroud tip clearance control ring for use in a gas turbine engine in which a rotary blade and a shroud ring form a gap that forms a blade outer air seal, and where the shroud ring is formed of two shroud segment halves, each shroud segment including a pin located near an end of the segment, the pins being slidably within slots formed on the casing, and a drive member moves along a direction in which the pins are moved along the slots to change a radius of the shroud ring in a way such that the radius remains substantially the same along a 360 degree angle of the shroud ring. The drive member includes two positions, one that places the shroud ring in a radially inward position, and another position that places the shroud ring in a radially outward position.

Inventors: Matheny; Alfred P (Jupiter, FL)

Assignee: Florida Turbine Technologies, Inc.

International Classification: F01D 11/08 (20060101)

Expiration Date: 2020-09-09 0:00:00