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. 09, 1997
Filed:
Jun. 20, 1996
Applicant:
Inventor:
Kenji Kobayashi, Tsubame, JP;
Assignee:
Kabushiki Kaisha Endo Seisakusho, Niigata-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
473331 ; 473349 ; 473350 ;
Abstract
An iron-type golf club head having a larger sweet area while insuring a strength of a head. A back surface 1A of a metallic head body 1 is formed with plural rectangular cavities 5, 5A of different dimensions, opposite to the face 4 of the head body 1. The cavities 5, 5A are formed by forging, thus forming even and fine tissues and grain flow. Accordingly, the toughness and durability of material can be enhanced, so that the face 4 can be made thinner to a 1.0 to 3.5 mm thickness for an optimal weight distribution. As a result, a larger sweet area can be realized without damaging a strength of head.