Planetary gear transmission systems or components – Planetary gearing or element – Floating or flexible coupling or support
Reexamination Certificate
2009-08-06
2010-11-02
Le, David D (Department: 3655)
Planetary gear transmission systems or components
Planetary gearing or element
Floating or flexible coupling or support
C464S079000, C475S346000
Reexamination Certificate
active
07824305
ABSTRACT:
A coupling system for connecting a sun gear to a shaft within a planetary gear train, includes a sun gear coupling connecting the sun gear to the shaft. The sun gear coupling has at least one undulant flexible section joined to an inflexible spindle for accommodating misalignment between the sun gear and the shaft. The flexible section comprises a cylindrical ring having a diameter greater than the diameter of the spindle, and joined to the spindle by two longitudinally spaced apart diaphragms. The juncture between the diaphragms, the ring, and the spindle is curved in cross section on an outer side to improve flexibility and minimize stress concentrations, and the inner sides of the diaphragms are straight edges which result in a non-symmetric contour of the diaphragm walls.
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European Search Report, dated Apr. 22, 2010, for 07251132.2-1252/1837542.
Dobek, Jr. Louis J.
Duong Loc
McCune Michael E.
Holmes Justin
Kinney & Lange , P.A.
Le David D
United Technologies Corporation
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