Marine propulsion – Screw propeller – Shafting
Reexamination Certificate
2007-10-09
2007-10-09
Olson, Lars A. (Department: 3617)
Marine propulsion
Screw propeller
Shafting
C464S146000
Reexamination Certificate
active
11272553
ABSTRACT:
A propeller shaft assembly comprises a connect shaft portion, a plungable constant velocity joint, and a hollow shaft portion with a cavity. An energy absorbing material is disposed within at least a portion of the cavity. The material absorbs energy when the constant velocity joint plunges into the hollow shaft portion when a predetermined force is exerted upon the constant velocity joint. The energy absorbing material may comprise a foam material, such as, an organic foam, a cellular foam, a synthetic foam, a metal foam, and the like. In addition to absorbing energy, the foam material minimizes the transmission of high frequency vibration of the propeller shaft assembly.
REFERENCES:
patent: 6585601 (2003-07-01), Booker et al.
patent: 6666771 (2003-12-01), Boutin
patent: 7040991 (2006-05-01), Kuczera et al.
patent: 2005/0159226 (2005-07-01), Cermak
patent: 1346866 (2005-05-01), None
Lyon James
Valovick Brian
Brumbaugh Jennifer M.
GKN Driveline North America, Inc.
Nylander Mick A.
Olson Lars A.
Venne Daniel V.
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