Invention Grant
- Patent Title: Linkage system with wear reduction
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Application No.: US11693871Application Date: 2007-03-30
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Publication No.: US09719370B2Publication Date: 2017-08-01
- Inventor: Constantino V. Loffredo
- Applicant: Constantino V. Loffredo
- Applicant Address: US CT Hartford
- Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee Address: US CT Hartford
- Agency: Carlson, Gaskey & Olds. P.C.
- Main IPC: F01D25/04
- IPC: F01D25/04 ; F01D17/10 ; F01D17/14 ; F02C9/18 ; F02K1/82 ; F02K3/075

Abstract:
A linkage system includes a pivot bias assembly at each pivot which removes internal clearances and resultant vibratory wear. The pivot bias assembly includes a cavity which defines an axis transverse to the pivot axis. A spring biased piston is located therein to provide a radial load toward the rotation pivot to close radial clearances. The spring loaded piston reduces all the radial internal clearances to zero to reduce vibratory wear created by engine vibratory inputs. An assembly flat is positioned such that the component is assembled in a non-operating angular position such that the spring biased piston is under minimal or no load then the component is rotated into operating position so as to preload the spring biased piston.
Public/Granted literature
- US20080236136A1 LINKAGE SYSTEM WITH WEAR REDUCTION Public/Granted day:2008-10-02
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