Iron type golf club head

Details Iron type golf club head Iron type golf club head

2006-12-05

2006-12-05

Kim, Eugene (Department: 3711)

Games using tangible projectile

Golf

Club or club support

C473S329000, C473S350000

Reexamination Certificate

active

07144337

ABSTRACT:
An iron type golf club head is provided with an annular trench including: an upper side trench portion that is positioned above the horizontal border line on the face surface through the sweet spot; and a lower side trench portion that is positioned beneath the above described border plane, and a ratio (Wu/Wd) of the average trench width Wu of the upper side trench portion to the average trench width Wd of the lower side trench portion is in the range of 2.5 to 5.0.

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patent: 2001-29523 (2001-02-01), None
patent: 2001-129131 (2001-05-01), None

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