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Securing arragementRelated Patent Categories: Rotary Kinetic Fluid Motors Or Pumps, Selectively Adjustable Vane Or Working Fluid Control Means, Upstream Of Runner, Plural And Arcuately Or Circularly Arranged Around Runner Axis, Individually Pivoted VanesSecuring arragement description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060204357, Securing arragement. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001] The present invention relates to a securing arrangement for securing an actuating lever to a spindle, and particularly but not exclusively to a securing arrangement for securing an actuating lever to a spindle in a rotary component of a gas turbine engine. [0002] Gas turbine engines conventionally include variable inlet guide vanes to control airflow through the engine, and these generally include a spindle to which an inlet guide vane actuating lever is secured by a securing arrangement. [0003] It would be desirable to provide a securing arrangement which maintains the actuating lever secured to the spindle during engine operation and which is of simple construction. [0004] According to a first aspect of the present invention, there is provided a securing arrangement for securing an actuating lever to a spindle, the securing arrangement comprising a fastening formation rotatably co-operable, in use, with a corresponding fastening formation on the spindle, and being rotatable relative to the spindle to a securing position in which the respective fastening formations co-operate so that the securing arrangement secures the actuating lever to the spindle, wherein the securing arrangement includes anti-rotation means for preventing rotation of the securing arrangement from the securing position. [0005] The anti-rotation means may be co-operable, in use, with the actuating lever to prevent rotation of the securing arrangement from the securing position. The anti-rotation means may be arranged to abut the actuating lever, in use, to prevent rotation of the securing arrangement from the securing position. The anti-rotation means may be arranged to abut a side face of the actuating lever, in use, to prevent rotation of the securing arrangement from the securing position. [0006] The anti-rotation means may extend generally radially from the securing arrangement, and may be axially deflectable from the radially extending position to permit rotation of the securing arrangement, in use, relative to the spindle. [0007] The anti-rotation means may extend generally circumferentially around the securing arrangement. [0008] The anti-rotation means may comprise an anti-rotation tab, and may comprise a plurality of anti-rotation tabs, each anti-rotation tab preferably extending generally radially from the securing arrangement. [0009] The plurality of anti-rotation tabs may be arranged generally circumferentially around the securing arrangement. Adjacent anti-rotation tabs may be arranged to be generally in abutment with each other. [0010] The securing arrangement may include a circumferentially extending flange portion, the anti-rotation means preferably being defined by the flange portion. The securing arrangement may include a fastening portion extending from the flange portion, the fastening formation preferably being provided on the fastening portion. The fastening portion may extend from the flange portion, preferably generally perpendicular thereto. [0011] The fastening formation may comprise a threaded formation which may be co-operable, in use, with a corresponding threaded formation on the spindle. [0012] The securing arrangement is preferably adapted to secure an actuating lever to a spindle in a rotary component of a gas turbine engine. [0013] According to a second aspect of the present invention, there is provided a gas turbine engine incorporating a securing arrangement according to the first aspect of the present invention for securing an actuating lever to a spindle in a rotary component of the gas turbine engine. [0014] An embodiment of the present invention will now be described by way of example only and with reference to the accompanying drawings, in which: [0015] FIG. 1 is a diagrammatic cross-sectional side view of a securing arrangement according to a first embodiment of the present invention, in use; [0016] FIG. 2 is a diagrammatic perspective view of the securing arrangement and an actuating lever of FIG. 1; [0017] FIG. 3 is a diagrammatic cross-sectional side view of the securing arrangement of FIGS. 1 and 2; and [0018] FIG. 4 is a diagrammatic perspective view of the securing arrangement of FIGS. 1 to 3. [0019] Referring to FIG. 1, there is shown generally a variable inlet guide vane 10 for use in a rotary component, for example a compressor, of a gas turbine engine. The guide vane 10 is rotatably mounted in a casing 12 of the engine and includes a spindle 14 extending from an upper end thereof. [0020] The circumferential outer surface 16 of the spindle 14 defines a plurality of splines (not shown) which are co-operable with corresponding splines defined by a circumferential inner surface 18 of an actuating lever 20, only part of which is illustrated in the drawings. The actuating lever 20 is operable, in use, to rotate the guide vane 10 to a desired position. A bush 22 is located between the casing 12 and a circumferential outer surface 24 of the actuating lever 20 and the actuating lever 20 is connected to an actuator ring (not shown), as is conventional in the art. [0021] As best seen in FIG. 1, the spindle 14 is generally annular and defines a central passage 26. At least part of the circumferential inner surface 28 of the passage 26 defines a fastening formation 30 which, according to a preferred embodiment of the invention, is a threaded formation. [0022] In order to secure the actuating lever 20 to the spindle 14 and prevent detachment of the actuating lever 20 from the spindle 14, for example during operation of the gas turbine engine, a securing arrangement 32, according to the present invention, is employed. The securing arrangement 32 generally includes a circumferentially extending flange portion 34 and a fastening portion 36 which is generally annular and which extends from the flange portion 34 generally perpendicular thereto. The fastening portion 36 is locatable, in use, in the passage 26 of the spindle 14 and includes a fastening formation 38, for example a threaded formation, which is rotatably co-operable with the fastening formation 30 on the spindle 14. [0023] As can be clearly seen in FIGS. 1 and 2, the flange portion 34 extends in use over an upper surface 40 of the actuating lever 20 such that when the securing arrangement 32 is rotated to a securing position in which the respective fastening formations 30, 38 co-operate such that a lower surface of the flange portion 34 of the securing arrangement 32 is firmly engaged with an upper end of the spindle 14, the securing arrangement 32 secures the actuating lever 20 to the spindle 14 and prevents unwanted or accidental release therefrom. [0024] The securing arrangement 32 includes anti-rotation means, generally designated by the reference numeral 42, for preventing rotation of the securing arrangement 32 from the securing position, and thereby preventing unwanted or accidental release of the actuating lever 20 from the spindle 14. Continue reading about Securing arragement... Full patent description for Securing arragement Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Securing arragement patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Securing arragement or other areas of interest. ### Previous Patent Application: Semiconductor-manufacturing apparatus equipped with cooling stage and semiconductor-manufacturing method using same Next Patent Application: Inline vent fan Industry Class: Rotary kinetic fluid motors or pumps ### FreshPatents.com Support Thank you for viewing the Securing arragement patent info. 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