Outer ring member for constant velocity joint and method of...

Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...

Reexamination Certificate

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Details

C148S287000, C148S589000, C148S649000

Reexamination Certificate

active

07090729

ABSTRACT:
An outer ring member for a constant velocity joint is manufactured. An intermediate preformed product having a cup section with an incomplete shape is formed by pressing a large diameter section without applying a low temperature annealing treatment and a lubricating chemical conversion coating treatment. Then, applying a low temperature annealing treatment and a lubricating chemical conversion coating treatment to the intermediate preformed product, thereafter a formed product having a cup section provided with ball-rolling grooves is formed by backward extrusion to the intermediate preformed product. Subsequently, the product is ironed before hardening, without applying a low temperature annealing treatment and a lubricating chemical conversion coating treatment to the formed product.

REFERENCES:
patent: 3644973 (1972-02-01), Abe
patent: 5007266 (1991-04-01), Nishiuchi et al.
patent: 5803993 (1998-09-01), Yoshida et al.
patent: 56-23337 (1981-03-01), None
patent: 2-211925 (1990-08-01), None
patent: 2-217129 (1990-08-01), None
patent: 9-220633 (1997-08-01), None
patent: 2000-61576 (2000-02-01), None
patent: 2000-117385 (2000-04-01), None

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