Land vehicles: bodies and tops – Bodies – Structural detail
Reexamination Certificate
2006-07-04
2006-07-04
Pedder, Dennis H. (Department: 3612)
Land vehicles: bodies and tops
Bodies
Structural detail
C296S193060, C052S749100
Reexamination Certificate
active
07070228
ABSTRACT:
A press formed article such as a center pillar or the like for a vehicle having a demanded strength distribution achieved by hardening through induction hardening or the like, and a method and an apparatus for performing induction hardening on the press formed article. The center pillar (10) being a press formed article has an intermediate top portion (11) which extends in a longitudinal direction of the center pillar (10), and two blade portions (12) which are both bent in the same direction from both sides of the intermediate top portion (11), in which hardening regions (Q) are provided on both sides of the intermediate top portion (11), extending over the intermediate top portion (11) and the blade portions (12). These hardening regions (Q) hardened by the induction hardening apparatus are regions in a form which widens toward the end and continuously expand from the upper portion to the lower portion of the center pillar (10). Therefore, the ratio between the hardening regions and non-hardening regions changes in the longitudinal direction of the center pillar (10), resulting in a demanded strength distribution.
REFERENCES:
patent: 3972744 (1976-08-01), Cantrell
patent: 4194763 (1980-03-01), Reidelbach et al.
patent: 6059899 (2000-05-01), Shibata et al.
patent: 2002/0033618 (2002-03-01), Kwon
patent: 61-76611 (1986-04-01), None
patent: 5-331529 (1993-12-01), None
patent: 10-017933 (1998-01-01), None
patent: 11-140537 (1999-05-01), None
patent: 0 953 495 (1999-11-01), None
patent: 2000-256733 (2000-09-01), None
patent: 2000-282136 (2000-10-01), None
patent: WO 02/079525 (2002-10-01), None
Haya Kouji
Hoshino Hisao
Kishihara Shigeki
Minagawa Takao
Shikuwa Shingo
Flynn ,Thiel, Boutell & Tanis, P.C.
Kikuchi Co., Ltd.
Pedder Dennis H.
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