| US 7,568,982 B2 | ||
| Golf club with high moment of inertia | ||
| Matthew T. Cackett, San Diego, Calif. (US); Alan Hocknell, Carlsbad, Calif. (US); Daniel M. Stevens, San Diego, Calif. (US); and Luke R. Williams, Carlsbad, Calif. (US) | ||
| Assigned to Callaway Golf Company, Carlsbad, Calif. (US) | ||
| Filed on Feb. 09, 2009, as Appl. No. 12/368,189. | ||
| Application 12/368189 is a continuation of application No. 11/867603, filed on Oct. 04, 2007, granted, now 7,488,261. | ||
| Application 11/867603 is a continuation of application No. 11/458958, filed on Jul. 20, 2006. | ||
| Application 11/458958 is a continuation in part of application No. 11/161199, filed on Jul. 26, 2005, granted, now 7,166,038. | ||
| Claims priority of provisional application 60/641283, filed on Jan. 03, 2005. | ||
| Prior Publication US 2009/0143162 A1, Jun. 04, 2009 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. A63B 53/14 (2006.01); A63B 53/04 (2006.01) | ||
| U.S. Cl. 473—300 [473/329; 473/345; 473/349] | 6 Claims |
| 1. A wood-type golf club comprising:
a wood-type golf club head having a volume ranging from 400 cubic centimeters to 470 cubic centimeters, a mass ranging from
210 grams to 250 grams, and a moment of inertia about the Izz axis through the center of gravity of the golf club head ranging
from 4700 grams-centimeters squared to 6000 grams-centimeters squared, the wood-type golf club head having a distance from
a front wall to a rear edge ranging from 2.0 inches to 5.0 inches;
a shaft connected to a heel end of the wood-type golf club head, the shaft having a mass ranging from 50 grams to 90 grams;
and
a grip disposed on a butt end of the shaft, the grip having a mass ranging from 30 grams to 50 grams;
wherein an inertia ratio of the moment of inertia about the Izz axis of the wood-type golf club head divided by the moment
of inertia about the Iyy axis of the wood-type golf club is greater than 0.0020.
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