Hardened golf club head

Details Hardened golf club head Hardened golf club head

2009-06-24

2011-12-13

Hunter, Alvin (Department: 3711)

Games using tangible projectile

Golf

Club or club support

C473S349000

Reexamination Certificate

active

08075420

ABSTRACT:
A golf club head with a hardened striking face portion that improves durability and performance is disclosed. More specifically, the golf club head disclosed may have a martensitic striking face portion that may be at least about 1.3 times harder than the rear portion of the golf club head due to the martensitic crystalline structure of the striking face portion formed by heating and quenching the striking face portion of the golf club head.

REFERENCES:
patent: 3811929 (1974-05-01), Kanetake
patent: 4082577 (1978-04-01), Heller
patent: 4386972 (1983-06-01), Knight
patent: 4472209 (1984-09-01), Langerich et al.
patent: 4768787 (1988-09-01), Shira
patent: 5062638 (1991-11-01), Shira
patent: 5176384 (1993-01-01), Sata et al.
patent: 5433798 (1995-07-01), Takano et al.
patent: 5584770 (1996-12-01), Jensen
patent: 5601501 (1997-02-01), Kobayashi
patent: 5630888 (1997-05-01), Yoshida et al.
patent: 5658209 (1997-08-01), Blakemore
patent: 5755626 (1998-05-01), Shira
patent: 5792004 (1998-08-01), Nagamoto
patent: 5807190 (1998-09-01), Krumme et al.
patent: 5944916 (1999-08-01), Chung
patent: 6494789 (2002-12-01), Chen
patent: 6660105 (2003-12-01), Ochi et al.
patent: 7041002 (2006-05-01), Yamamoto
patent: 7594862 (2009-09-01), Gilbert
patent: 7695377 (2010-04-01), Yamagishi et al.
patent: 7857712 (2010-12-01), Nishitani et al.
patent: 7878923 (2011-02-01), Yamagishi et al.
patent: 2006/0128496 (2006-06-01), Weber et al.
patent: 2006/0137784 (2006-06-01), Lo
patent: 2008/0283162 (2008-11-01), Chiang
patent: 57079168 (1982-05-01), None
patent: 61253347 (1986-11-01), None
patent: 63206449 (1988-08-01), None
patent: 04336083 (1992-11-01), None
patent: 07299163 (1995-11-01), None
patent: 08206260 (1996-08-01), None
patent: 09056855 (1997-03-01), None
patent: 2003113449 (2003-04-01), None
patent: 2004321530 (2004-11-01), None
patent: 2005298957 (2005-10-01), None
patent: 2008069422 (2008-03-01), None
patent: WO 2010082685 (2010-07-01), None

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