# US 9,517,392 B2 · Iron-type golf club head > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,392 B2 - Document ID: US9517392B2 - Status: Granted - Kind: B2 - Application number: 14/311,599 - Filed: 2014-06-23 - Published: 2015-02-05 - Granted: 2016-12-13 - Earliest claimed: 2013-07-30 - Assignees: Dunlop Sports Co. Ltd. - Applicants: Dunlop Sports Co. Ltd. - Inventors: Naoyoshi Ueda - Web page: https://patentgrep.com/patent/US9517392B2 ## CPC - A63B 53/047: {iron-type} - A63B 53/04: Heads - A63B 60/02: Ballast means for adjusting the centre of mass (A63B60/24, A63B60/54 take precedence) - A63B 53/0408: {characterised by specific dimensions, e.g. thickness} - A63B 53/0433: {with special sole configurations} - A63B 53/0445: {Details of grooves or the like on the impact surface} - A63B 2053/0491: {with added weights, e.g. changeable, replaceable} - A63B 2209/00: Characteristics of used materials - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract An iron-type golf club head has a face for hitting a ball, a sole extending backward from the lower edge of the face and extending in the toe-heel direction of the head so as to define the bottom surface of the club head, and a hosel extending upward in a heel-side of the face and provided with a shaft inserting hole. The club head is composed of a head main body including the face, and a weight member having a specific gravity larger than that of the head main body and fixed to the head main body. The weight member integrally includes a first part extending in the toe-heel direction in the sole, and a second part constituting at least substantial portion of the hosel. ## Claims ### Claim 1 An iron-type golf club head having a face for hitting a ball, a sole extending backward from the lower edge of the face and extending in the toe-heel direction of the head so as to define the bottom surface of the club head, and a hosel extending upward in a heel-side of the face and provided with a shaft inserting hole, comprising: a head main body including the face and the sole, and a weight member having a specific gravity larger than that of the head main body and fixed to the head main body, wherein the weight member integrally includes a first part extending in the toe-heel direction in the sole, and a second part constituting at least substantial portion of the hosel, the sole is provided with a groove extending in the toe-heel direction, and the first part of the weight member is inserted into the groove. ### Claim 2 (depends on 1) The golf club head according to claim 1, wherein a toe-side end of the first part is positioned on the toe-side of a sweet spot of the face. ### Claim 3 (depends on 2) The golf club head according to claim 2, wherein in a standard state of the club head set on a horizontal plane at its specified lie angle and loft angle, the first part has an upper surface whose height from the horizontal plane is increased toward the toe-side of the club head. ### Claim 4 (depends on 2) The golf club head according to claim 2, wherein in the bottom view of the club head in a standard state of the club head set on a horizontal plane at its specified lie angle and loft angle, the width of the first part measured in the front-back direction of the club head is increased toward the toe-side of the club head. ### Claim 5 (depends on 1) The golf club head according to claim 1, wherein a toe-side end of the first part is positioned at a distance not more than 20 mm from a toe-side end of the face. ### Claim 6 (depends on 5) The golf club head according to claim 5, wherein in a standard state of the club head set on a horizontal plane at its specified lie angle and loft angle, the first part has an upper surface whose height from the horizontal plane is increased toward the toe-side of the club head. ### Claim 7 (depends on 5) The golf club head according to claim 5, wherein in the bottom view of the club head in a standard state of the club head set on a horizontal plane at its specified lie angle and loft angle, the width of the first part measured in the front-back direction of the club head is increased toward the toe-side of the club head. ### Claim 8 (depends on 1) The golf club head according to claim 1, wherein in a standard state of the club head set on a horizontal plane at its specified lie angle and loft angle, the first part has an upper surface whose height from the horizontal plane is increased toward the toe-side of the club head. ### Claim 9 (depends on 8) The golf club head according to claim 8, wherein in the bottom view of the club head in a standard state of the club head set on a horizontal plane at its specified lie angle and loft angle, the width of the first part measured in the front-back direction of the club head is increased toward the toe-side of the club head. ### Claim 10 (depends on 1) The golf club head according to claim 1, wherein in the bottom view of the club head in a standard state of the club head set on a horizontal plane at its specified lie angle and loft angle, the width of the first part measured in the front-back direction of the club head is increased toward the toe-side of the club head. ### Claim 11 (depends on 1) The golf club head according to claim 1, wherein the head main body has a heel-side end surface extending in the up-and-down direction, the second part has a contact surface extending in the up-and-down direction, and the contact surface is confronted with the heel-side end surface by the insertion of the first part of the weight member into the groove. ### Claim 12 (depends on 1) The golf club head according to claim 1, wherein the head main body is a composite body of a stainless steel and a titanium alloy, and the weight member is made of a tungsten alloy.