JP-2022529542-A5 -

Dates

Publication Date

20230502

Application Date

20200424

Description

Furthermore, the embodiments and limitations disclosed herein are not considered to be contributed to the public under the doctrine of contribution if (1) the embodiments and/or limitations are not explicitly described in the claims and (2) they are equivalent to, or potentially equivalent to, the expressive components and/or limitations in the claims under the doctrine of equivalents. The following are the features of the technology disclosed herein. (Item 1) It is an iron-type golf club head, The main club building, Insert and, The cap and Equipped with weight, The aforementioned main club body is, Front and, The rear and, The tip of the stem, The heel end and The strike side, The front of the strike surface, which is designed to impact the golf ball, A horseshoe configured to accept a golf shaft, Top rail and The sole and The rear of the strike face, The outer peripheral side wall formed by the top rail, the sole, the toe end, and the heel end, Equipped with, The outer peripheral wall extends rearward, substantially perpendicular to the strike surface. The back cavity is defined by the outer peripheral wall and the rear surface of the strike surface. The back cavity opens toward the rear of the main club body, The outer peripheral side wall further includes a locking groove recessed into the outer peripheral side wall in at least a portion of the area around the rear surface of the strike surface. The lock groove is recessed into the outer peripheral side wall, offset rearward from the rear surface of the strike surface in a direction parallel to the rear surface of the strike surface. The aforementioned insert is Front of the insert and The rear of the insert, Insert lock flange and Equipped with, The insert is configured to be received within the back cavity, The insert lock flange is configured to be received within the lock groove, The front surface of the insert is configured to be directly adjacent to the rear surface of the strike surface and to conform to the rear surface of the strike surface. The rear portion of the insert is further, Upper part and The muscle back section, The transition section between the upper part and the muscle back part, Equipped with, The aforementioned muscle back portion surrounds the void, The main club body further includes an opening in the heel end, The aforementioned opening is a hole that opens outward toward the outer surface of the heel end and also toward the back cavity. When the insert is received in the back cavity, the opening is aligned with the gap, The weight is configured to be received into the gap through the opening. An iron-type golf club head in which the opening is closed by the cap after the weight has been received in the void. (Item 2) The main club body further comprises a first material having a first density, wherein the iron-type golf club head is as described in item 1. (Item 3) The first material is a first metal alloy, as described in item 2, for the iron-type golf club head. (Item 4) The insert comprises a second material having a second density, as described in item 3, for the iron-type golf club head. (Item 5) The iron-type golf club head according to item 4, wherein the first density of the first material is greater than the second density of the second material. (Item 6) The upper part of the insert has a first insert thickness, The muscle back portion of the insert has a second insert thickness, The iron-type golf club head described in item 1, wherein the second insert thickness is greater than the first insert thickness. (Item 7) The iron-type golf club head described in item 6, wherein the thickness of the second insert is variable. (Item 8) The iron-type golf club head described in item 1, wherein the void is completely contained within the muscle-back portion of the insert. (Item 9) The aforementioned weight is, The tip of the stem, The central part and, The heel end and Equipped with, The aforementioned weight is an iron-type golf club head as described in item 1, comprising only one material. (Item 10) The aforementioned weight is, The tip of the stem, The central part and, The heel end and Equipped with, The aforementioned weight is, The first weight material and The second weight material, Includes, The first weight material has a lower density than the second weight material, wherein the iron-type golf club head is as described in item 1. (Item 11) The weight portion at the heel end includes the second weight material, as described in item 10, for an iron-type golf club head. (Item 12) The toe end weight portion includes the second weight material, as described in item 10, for the iron-type golf club head. (Item 13) The weight is permanently fixed within the gap by means of an adhesive, as described in item 1, for the iron-type golf club head. (Item 14) The aforementioned weight is detachably fixed within the gap by press-fitting and further by a screw-type cap, as described in item 1, for the iron-type golf club head.