Non-rotating universal joint for a helicopter drive unit
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United States of America Patent
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Nov 26, 2013
Grant Date -
Dec 1, 2011
app pub date -
May 27, 2011
filing date -
May 27, 2010
priority date (Note) -
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Abstract
A non-rotating universal joint for a helicopter drive unit has a spider defined by a ring, which has four connecting portions spaced 90° apart and engaging respective forks defining the ends of respective arms of two connecting members which, in use, are fixed with respect to a casing of an engine and a casing of a reduction gear; each fork and the corresponding connecting portion have respective through holes coaxial with one another and engaged by a screw; and dampers are interposed between the connecting portions of the ring and the shanks of the screws, and between the connecting portions of the ring and the forks.
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