The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2005
Filed:
Jul. 02, 2003
Takeshi Naruo, Osaka, JP;
Yoshihiro Fujikawa, Kaizuka, JP;
Takeshi Naruo, Osaka, JP;
Yoshihiro Fujikawa, Kaizuka, JP;
Mizuno Corporation, Osaka, JP;
Abstract
A wood golf club head is adapted to achieve the maximum flight distance or optimum trajectory of a golf ball, by incorporating features to achieve an appropriate correlation between launch angle and backspin speed of a golf ball that is struck by the club head. A wood golf club head is designed to achieve a launch angle and a backspin speed of a golf ball located in an angle-spinspeed region defined by an ellipse having a center point O(), length of a major axis L equal to(rpm), length of a minor axis S equal to 5.7(deg), and tilt angle θ of the major axis measured in a counterclockwise direction from the vertical axis equal to 0.25(deg), wherein the horizontal coordinate designates the launch angle(deg) of the golf ball, the vertical coordinate designates the backspin speed(rpm) of the golf ball, and the horizontal and vertical axes have the same numerical scale. Preferably, the wood golf club head has a face formed of a low friction material and a loft angle of 13 to 20 degrees.