Four bar bracket

• US 9,091,209 B2
• Filed: 06/20/2012
• Issued: 07/28/2015
• Est. Priority Date: 06/20/2012
• Status: Active Grant

• Current Assignee: Rtx Corporation
• Original Assignee: United Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: LeBlanc, Ryan Edward, Cummings, Kevin J.
• Primary Examiner(s): LOOK, EDWARD K
• Assistant Examiner(s): Eastman, Aaron R
• Application Number:
  US13/527,744
• Publication Number:
  US 20130340555A1
• Time in Patent Office: 1,133 Days
• Field of Search: 248/554, 248/555, 248/675
• US Class Current: 1/1
• CPC Class Codes: F01D 17/162 for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line F01D17/167 takes precedence
• CPC Class Codes: F02C 9/18 by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages F02C3/113 takes precedence
• CPC Class Codes: F04D 27/0215 Arrangements therefor, e.g. bleed or by-pass valves
• CPC Class Codes: F04D 27/023 Details or means for fluid extraction
• CPC Class Codes: F05D 2240/91 on a stationary structure
• CPC Class Codes: F05D 2260/50 Kinematic linkage, i.e. transmission of position
• CPC Class Codes: F05D 2260/56 using cams or eccentrics
• CPC Class Codes: Y10T 74/20 Control lever and linkage systems

Abstract

A bracket for use with a four bar linkage, has a head portion having a triangular shape, and a shank extending from a corner of the triangular head portion, the shank thickening depthwise and narrowing widthwise along its length.

Claims

1. A linkage for actuating a seal, said linkage comprising:

a first bell crank assembly, wherein said first bell crank assembly has a crank having a first arm and a second arm, wherein said first arm is radially outside said second arm,

a second bell crank assembly,

a first connecting link connecting said first bell crank assembly to said second bell crank assembly such that motion of said first bell crank assembly effects motion of said second bell crank assembly, and

a bracket attaching said first bell crank assembly to said second bell crank assembly.

2. The linkage of claim 1 further comprising:

a duct casing to which a bracket of said first bell crank is mounted.

3. The linkage of claim 2 wherein said bracket is attached to said first bell crank by a flexible web.

4. The linkage of claim 2 wherein said duct casing has a mounting pin thereon that locates the bracket thereon.

5. The linkage of claim 2 further comprising:

said duct casing having a radially outwardly extending flange,

said first bell crank assembly has a crank having a first arm radially outside said flange, and

a second arm, wherein said first arm is radially outside said second arm wherein motive force applied to said second arm rotates said first arm.

6. The linkage of claim 5 further comprising a second connecting link attaching to said second arm.

7. The linkage of claim 1 further comprising:

said second bell crank having a mounting surface thereon for attaching said bracket thereto.

8. The linkage of claim 1 wherein said bracket has a head portion having a triangular shape, and a shank extending from a corner of said triangular head portion, said shank thickening depthwise and narrowing widthwise along its length.

9. The linkage of claim 8 wherein said head portion has a hole for receiving a locator pin extending from said second bellcrank assembly.

10. A linkage for actuating a seal in a gas turbine engine, said linkage comprising:

a first bell crank assembly, wherein said first bell crank assembly has a crank having a first arm and a second arm, wherein said first arm is radially outside said second arm,

a second bell crank assembly,

a first connecting link connecting said first bell crank assembly to said second bell crank assembly such that motion of said first bell crank assembly effects motion of said second bell crank assembly, and a

a bracket attaching said a first bell crank assembly to said second bell crank assembly.

11. The linkage of claim 10 wherein said bracket is attached to said first bell crank by a flexible web.

12. The linkage of claim 10 further comprising:

said engine having a radially outwardly extending flange,

said first bell crank assembly has a crank having a first arm radially outside said flange, and

a second arm, wherein said first arm is radially outside said second arm and wherein motive force applied to said second arm rotates said first arm.

13. The linkage of claim 10 further comprising:

said second bell crank having a mounting surface thereon for attaching said bracket thereto.

14. The linkage of claim 10 wherein said bracket has a head portion having a triangular shape, and a shank extending from a corner of said triangular head portion, said shank thickening depthwise and narrowing widthwise along its length.