Snap on blade shim

Details Snap on blade shim Snap on blade shim

2005-03-01

2005-03-01

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

C416S19300A, C416S248000

Reexamination Certificate

active

06860722

ABSTRACT:
A gas turbine engine blade root shim includes a dovetail shim portion with a dovetail shape and a longitudinally extending substantially flat base and distal first and second longitudinally spaced apart forward and aft ends. Transversely spaced apart first and second walls extend upwardly from the base which includes at least two longitudinally extending elongated base apertures. Each of the base apertures includes a main region and longitudinally spaced apart rounded end regions. Dog-bone-shaped base apertures or rounded end base apertures having semi-circular rounded end regions may be used. The shim is designed for a blade dovetail root with a root slot formed in a bottom of the dovetail root. The dovetail shim portion with the dovetail shape substantially conforms to at least a portion of a cross-sectional dovetail shape of the dovetail root through the root slot. The base is disposed within the root slot.

REFERENCES:
patent: 5160243 (1992-11-01), Herzner et al.
patent: 5240375 (1993-08-01), Wayte
patent: 6290466 (2001-09-01), Ravenhall et al.
patent: 6398499 (2002-06-01), Simonetti et al.
patent: 6431835 (2002-08-01), Kolodziej et al.

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