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:
May. 11, 2010
Filed:
Jun. 18, 2008
Tomohiko Sato, Tukubo-gun, Okayama, JP;
Sunao Umemura, Okubo-cho, Akashi-shi Hyogo, JP;
Yutaka Kawata, Nishi-ku, Kobe-shi, Hyogo, JP;
Mitsuhiro Saso, Himeji-shi, Hyogo, JP;
Tomohiko Sato, Tukubo-gun, Okayama, JP;
Sunao Umemura, Okubo-cho, Akashi-shi Hyogo, JP;
Yutaka Kawata, Nishi-ku, Kobe-shi, Hyogo, JP;
Mitsuhiro Saso, Himeji-shi, Hyogo, JP;
Other;
Abstract
A wood type club is provided. A toe-side part and a heel-side part located between the crown part and the sole part of the head are provided with at least one concave groove opened outward in a horizontal direction and extending from the face part to the back part in a longitudinal direction to guide an air stream to the head in a swing action; and a whole or part of the concave groove has a curved part bulging outwardly so that an angle in which a concave groove bottom formed from an inlet of the concave groove to an inside thereof is inclined inward with respect to a line perpendicular to the face part is smaller than an angle in which a line connecting an inlet of the concave groove bottom and an outlet thereof is inclined inward with respect to the line perpendicular to the face part.