Power transmission shaft

Details Power transmission shaft Power transmission shaft

2008-07-15

2008-07-15

Binda, Greg (Department: 3679)

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

Shafting

With disparate device for coupling shaft to additional shaft...

C029SDIG049

Reexamination Certificate

active

07399230

ABSTRACT:
A technique for improving a strength, especially a fatigue strength of a power transmission shaft provided with a serrated portion for torque transmission such as a spline shaft. A power transmission shaft is serration-fitted to an inner joint member of respective constant velocity joints. A driveshaft is provided with a serrated portion as well as a smooth portion having a cylindrical outer circumferential surface. A cut-up portion is formed at the end portion of the serrated portion. When applying an induction hardening to the smooth portion and the serrated portion, a hardening ratio of the smooth portion is set at a different value from that of the serrated portion, and such that a fatigue strength of the smooth portion becomes equal to or greater than that of the serrated portion.

REFERENCES:
patent: 3024626 (1962-03-01), Frischman
patent: 6319337 (2001-11-01), Yoshida et al.
patent: 6390924 (2002-05-01), Yoshida et al.
patent: 2002/0017343 (2002-02-01), Yoshida et al.
patent: 2002/0173363 (2002-11-01), Makino et al.
patent: 1 016 801 (2000-07-01), None

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