Induction heat treatment method and coil and article treated...

Electric heating – Inductive heating – Specific heating application

Reexamination Certificate

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Details

C219S639000, C219S652000, C219S672000

Reexamination Certificate

active

06940056

ABSTRACT:
A method of induction heat treatment of articles having curved outer surfaces, such as differential housings. The method employs a semi-rectangular induction coil that is adapted to provide a plurality of lateral magnetic fields that are used to induce currents in, and thereby provide heat to, a portion of the curved section of the article. The method and induction coil are particularly adapted to provide an induction hardening heat treatment of a curved heat treatment portion of a differential housing. The differential housing was cast from nodular iron. The induction-hardening heat treatment comprised heating the heat treatment portion of the differential housing above the austenite transition temperature and quenching to below the martensite transformation temperature.

REFERENCES:
patent: 2157948 (1939-05-01), Beeny
patent: 2167798 (1939-08-01), Denneen et al.
patent: 2180038 (1939-11-01), Denneen et al.
patent: 2236425 (1941-03-01), Evleth
patent: 2295777 (1942-09-01), Denneen et al.
patent: 2308240 (1943-01-01), Goodridge
patent: 2512893 (1950-06-01), Gehr
patent: 2689296 (1954-09-01), Sabol
patent: 2828119 (1958-03-01), Good et al.
patent: 2882191 (1959-04-01), Van Swaal
patent: 3431379 (1969-03-01), Yrene
patent: 3466023 (1969-09-01), Cunningham et al.
patent: 3483346 (1969-12-01), Frisch et al.
patent: 3592703 (1971-07-01), Dehn et al.
patent: 3649797 (1972-03-01), Vickers
patent: 3823927 (1974-07-01), Budzinski
patent: 3842234 (1974-10-01), Seyfried
patent: 3846609 (1974-11-01), Enk
patent: 3848107 (1974-11-01), Lewis
patent: 4100387 (1978-07-01), Reinke et al.
patent: 4251704 (1981-02-01), Masie et al.
patent: 4251707 (1981-02-01), Pusateri et al.
patent: 4251709 (1981-02-01), Schumacher
patent: 4677876 (1987-07-01), Dissett
patent: 4728761 (1988-03-01), Mucha et al.
patent: 4751853 (1988-06-01), Dissett
patent: 4785147 (1988-11-01), Mucha et al.
patent: 4808779 (1989-02-01), Cogley
patent: 4828227 (1989-05-01), Georges et al.
patent: 4855551 (1989-08-01), Mucha et al.
patent: 4855556 (1989-08-01), Mucha et al.
patent: 4894501 (1990-01-01), Pfaffmann et al.
patent: 5213636 (1993-05-01), Akers et al.
patent: 5218178 (1993-06-01), Peysakhovich
patent: 5414246 (1995-05-01), Shapona
patent: 5495094 (1996-02-01), Rowan et al.
patent: 6139462 (2000-10-01), Gage et al.
patent: 6274857 (2001-08-01), Loveless et al.
patent: 6315841 (2001-11-01), Fisher et al.
Patent application (23 pages) and drawings (4 pages) for U.S. Appl. No. 10/643,362, filed Aug. 19, 2003, entitled “Induction Heat Treatment Method And Coil And Article Treated Thereby,” to Christofis et al.
Patent application (24 pages) and drawings (6 pages) for U.S. Appl. No. 10/643,363, filed Aug. 19, 2003, entitled “Induction Heat Treatment Method And Article Treated Thereby,” to Christofis et al.

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