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:
Dec. 11, 2012
Filed:
Apr. 16, 2010
Takashi Nakamura, Kobe, JP;
Masatoshi Yokota, Kobe, JP;
Takashi Nakamura, Kobe, JP;
Masatoshi Yokota, Kobe, JP;
SRI Sports Limited, Kobe-Shi, JP;
Abstract
A headhas a face linehaving a depth of D(mm). When a boundary between a land area and a face line is defined as a point Pa; a point of which a depth is [D/4] (mm) is defined as a point Pb; a point of which a depth is [D/2] (mm) is defined as a point Pc; a point of which a depth is [(D)×(¾)] (mm) is defined as a point Pd; a point of which a depth is 0.002 (mm) is defined as a point Px; a radius of a circle CLpassing through three points of the point Pa, the point Pb, and the point Pc is defined as R(mm); a straight line passing through the point Pa and the point Px is defined as a straight line Lax; and an angle between the land area and the straight line Lax is defined as θ(degree), the radius Ris 0.2 (mm) or greater and 0.4 (mm) or less, and the angle θis 10 degrees or greater and 50 degrees or less.