Propeller shaft assembly with tunable energy absorption feature

Details Propeller shaft assembly with tunable energy absorption feature Propeller shaft assembly with tunable energy absorption feature

2007-01-09

2007-01-09

Dunwoody, Aaron (Department: 3679)

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Shafting

C464S162000, C464S182000, C464S183000

Reexamination Certificate

active

10967969

ABSTRACT:
A propeller shaft assembly includes an inner member having an outer surface with a plurality of splines defining a splined portion, and an outer member having an inner surface with a plurality of splines defining a splined portion. The splined portion of the inner member is capable of being slidably engaged with the splined portion of the outer member to form a splined connection therebetween. One of the inner and outer members includes a tunable energy absorption feature that controls an amount of interference between the inner and outer members. For example, the tunable energy absorption feature can be in the form of a friction ramp on one member that frictionally engages an angled leading ramp on the other member, a raised portion on one or more splines, or splines having different length that can progressively absorb energy during axial deformation of the propeller shaft assembly.

REFERENCES:
patent: 5314204 (1994-05-01), DuRocher et al.
patent: 5720102 (1998-02-01), McClanahan
patent: 6754943 (2004-06-01), Perry et al.
PCT Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, Feb. 13, 2006, 2 pages.
PCT International Search Report by the International Searching Authority of the European Patent Office, Feb. 13, 2006, 3 pages.

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