Constant velocity universal joint

Details Constant velocity universal joint Constant velocity universal joint

2008-11-25

2011-10-04

Binda, Gregory (Department: 3679)

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

Coupling accommodates drive between members having...

Tripod coupling

C464S905000

Reexamination Certificate

active

08029372

ABSTRACT:
A constant velocity universal joint is provided, having a hollow outer joint member, an inner joint member, an outer roller including a cylindrical surface, an inner roller including a concave sphere, and plural leg shafts each including a convex sphere formed in a tip portion and engaging with the concave sphere, where the cylindrical surface of the outer roller satisfies the following:in-line-formulae description="In-line Formulae" end="lead"?W1>PCR(1−cos θ)/2+μ3R3+μ2R1in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?W2>3PCR(1−cos θ)/2−μ3R3+μ2R1,in-line-formulae description="In-line Formulae" end="tail"?where W1indicates a length of the cylindrical surface from a center of the leg shaft and an intersection of the cylindrical surface and an upper side taper portion of the outer roller, W2indicates a length of the cylindrical surface from the center of the leg shaft and an intersection of the cylindrical surface and a lower side taper portion of the outer roller, and θ indicates a maximum joint angle.

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