Abstract: A fireseal for sealing around a cylindrical shaft or pipe. The fireseal is helical and has an expanded cross-section in a central portion intermediate its ends.

Abstract: A variable stator vane actuating lever (50) for use in a compressor (20) of a gas turbine engine (10). The lever (50) comprises a first end (52) for pivotal connection to a stator vane actuator ring (36) and a second end (54) for abutting a stator vane spindle (32). The stator vane spindle (32) has a diameter and flat positions (56,58,60,62). The second end (54) of the lever (50) has resilient members (64,66) for abutting the flat portions (56,58,60,62) of the stator vane spindle (32) at diametrically opposite locations. The resilient members (64,66) are integral with the second end (54) of the stator vane spindle (32) and are curved so that they are substantially tubular to provide even load distribution and improved location of the lever (50) on the stator vane spindle (32).

Abstract: A seal structure (10) has a flange (12) which locates against the flange of another member (22) and is held there by a “U” shaped clip (32). Member (22) has one or more cut outs (30) in its flange, and clip (32) has a corresponding number of tags (34) formed in one leg of its “U” shape. The or each tag (34) is bent inwards. On assembly, the flange of member (22) is placed against flange (12) and clip (32) is pushed over the sub assembly until the tag(s) (34) locate in a respective cut out (30). The need for drilling holes and riveting or bolting the assembly together is thus obviated.

Abstract: A seal structure (10) has a flange (12) which locates against the flange of another member (22) and is held there by a “U” shaped clip (32). Member (22) has one or more cut outs (30) in its flange, and clip (32) has a corresponding number of tags (34) formed in one leg of its “U” shape. The or each tag (34) is bent inwards. On assembly, the flange of member (22) is placed against flange (12) and clip (32) is pushed over the sub assembly until the tag(s) (34) locate in a respective cut out (30). The need for drilling holes and riveting or bolting the assembly together is thus obviated.

Abstract: A locking device (36) for use in retaining an assembly of rotor blades against movement around a rotor disc on which they are mounted comprises a body member having first and second portions interconnected by a weakened region (66) whereby a force applied to turn the first portion (38) relative to the second portion (40) can cause them to shear apart at said weakened region (66) thereby facilitating release of seized devices to enable blade removal.

Abstract: A locking device (36) for use in retaining an assembly of rotor blades against movement around a rotor disc on which they are mounted comprises a body member having first and second portions interconnected by a weakened region (66) whereby a force applied to turn the first portion (38) relative to the second portion (40) can cause them to shear apart at said weakened region (66) thereby facilitating release of seized devices to enable blade removal.