Golf club

{
  "publication_number": "US9480890B2",
  "country": "US",
  "kind": "B2",
  "title": "Golf club",
  "abstract": "A golf club 2 includes a head 4 and a shaft 6. A face 5 includes a sole s 4 and a grounding member X 1. The sole s 4 includes a plurality of attaching portions r 1. The grounding member X 1 can be fixed to each of the plurality of attaching portions r 1. A face angle can be varied depending on an attached position of the grounding member X 1. Preferably, the golf club 2 further includes a non-grounding member X 2. Preferably, the non-grounding member X 2 can be fixed to each of the attaching portions r 1. Preferably, attached position of the non-grounding member X 2 does not influence the face angle.",
  "claims": [
    "1. A golf club comprising: a head; and a shaft, wherein the head comprises a sole, a face, at least one grounding member, and at least one non-grounding member; the sole comprises a plurality of attaching portions; the grounding member is detachably attached to any of the plurality of attaching portions; the face angle is varied depending on an attached position of the grounding member; the non-grounding member is attachable and detachable to/from each of the attaching portions; and an attached position of the non-grounding member does not influence the face angle.",
    "2. The golf club according to claim 1, wherein the non-grounding member is attached to the attaching portion to which the grounding member is not attached.",
    "3. The golf club according to claim 1, wherein each of the plurality of attaching portions is a recess; the recess can regulate rotation of the grounding member; and the recess can regulate rotation of the non-grounding member.",
    "4. The golf club according to claim 1, wherein a weight of the grounding member is substantially equal to a weight of the non-grounding member.",
    "5. The golf club according to claim 1, wherein a center of gravity of the head moves with movement of the grounding member; and the golf club can be adjusted so that a center of gravity of the head moves to a back side as the face angle is opened.",
    "6. The golf club according to claim 1, further comprising a screw, wherein the grounding member is detachably attached by the screw.",
    "7. The golf club according to claim 1, further comprising two screws, wherein the number of the non-grounding members is two; and each of the non-grounding members is detachably attached by each of the screws.",
    "8. The golf club according to claim 1, wherein the plurality of attaching portions are disposed in different positions in a face-back direction.",
    "9. The golf club according to claim 1, wherein each of the plurality of attaching portions is a recess; a height of the grounding member is greater than a depth of the recess; and a height of the non-grounding member is equal to or less than the depth of the recess.",
    "10. The golf club according to claim 1, wherein the non-grounding member comprises a hollow portion.",
    "11. The golf club according to claim 1, wherein the grounding member comprises a hollow portion.",
    "12. The golf club according to claim 1, wherein the grounding member comprises a grounding surface; and the grounding surface is a curved surface convexed to the outside of the head.",
    "13. The golf club according to claim 1, wherein the non-grounding member can suppress movement of a center of gravity of the head caused by adjustment of the face angle.",
    "14. The golf club according to claim 1, wherein the number of the attaching portions is equal to or greater than three; the grounding member is attached to at least one of the attaching portions; and the non-grounding member can be selectively attached to any of the other attaching portions.",
    "15. The golf club according to claim 1, wherein if the number of the grounding members is defined as N 1, the number of the non-grounding members is defined as N 2, and the number of the attaching portions is defined as N 3, N 3 is equal to the sum of N 1 and N 2.",
    "16. The golf club according to claim 1, wherein the number of the grounding members is equal to or greater than two; and the golf club comprises the grounding members having heights different from each other.",
    "17. The golf club according to claim 1, wherein each of the plurality of attaching portions is a recess; the plurality of recesses have the same planar view shape; and the grounding member and the non-grounding member have the same planar view shape.",
    "18. The golf club according to claim 1, wherein the golf club is a driver.",
    "19. The golf club according to claim 1, wherein a first attaching portion, a second attaching portion, and a third attaching portion are provided as the attaching portions; a first sole indication portion is provided in a position corresponding to the first attaching portion; a second sole indication portion is provided in a position corresponding to the second attaching portion; a third sole indication portion is provided in a position corresponding to the third attaching portion; and the first sole indication portion, the second sole indication portion, and the third sole indication portion are indications capable of showing a state of the face angle.",
    "20. A golf club comprising: a head; and a shaft, wherein the head comprises a sole, a face and at least one grounding member; the sole comprises a plurality of attaching portions; the grounding member is detachably attached to any of the plurality of attaching portions; the face angle is varied depending on an attached position of the grounding member; and the plurality of attaching portions are disposed in different positions in a face-back direction."
  ],
  "cpc": [
    "A63B 53/06",
    "A63B 2053/027",
    "A63B 2053/0433",
    "A63B 2053/0491",
    "A63B 53/027",
    "A63B 53/0433",
    "A63B 53/0466",
    "A63B 60/00",
    "A63B 60/04",
    "A63B 60/46"
  ],
  "assignees": [
    "DUNLOP SPORTS CO LTD"
  ],
  "filing_date": "2014-06-23",
  "publication_date": "2016-11-01",
  "grant_date": "2016-11-01",
  "priority_date": "2013-07-08",
  "application_number": "US-201414311886-A",
  "family_id": "52133184",
  "citations": [
    "JP2001204861A",
    "JP2004267460A",
    "US2006094526A1",
    "US2011152000A1",
    "US2012122601A1",
    "US2012172142A1",
    "US2012202615A1",
    "US2013090185A1"
  ]
}