Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Adjustable
Reexamination Certificate
2005-08-17
2008-09-09
Edgar, Richard (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Adjustable
C416S239000
Reexamination Certificate
active
07422419
ABSTRACT:
A propeller blade mounted with a preload adjacent a propeller blade root retention that increases the moment capacity of the retention for a given pitch diameter, yet permits pitching of the propeller blade about a blade axis in response to a propeller pitch change actuation system. During assembly, the preload condition is established by preload springs which apply a load on the end of a tapered roller bearing set as a floating race is rotated which allows the tapered roller bearing set to progressively push the propeller blade root outboard and the floating race inboard to generate the preloaded condition.
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Search Report GB0615821.6.
United Kingdom Search Report for Application No. GB0615821.6, Jul. 24, 2007.
Carlson & Gaskey & Olds
Edgar Richard
Hamilton Sundstrand Corporation
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