Golf club head with removable weight
First Claim
Patent Images
1. A golf club head comprising:
- a head body including a recess portion for a socket;
a socket attached to the recess portion for a socket; and
a weight body detachably attached to the socket, whereinthe weight body can be secured by relative rotation of an angle +θ
°
to the socket;
the secured weight body can be detached by relative rotation of an angle −
θ
°
to the socket;
the weight body includes an engaging portion for engaging the socket, wherein a distance between a central point and a point farthest from the central point in an outline of a section of the engaging portion is defined as R1, a distance between a central point and a point nearest to the central point in an outline of a section of the engaging portion is defined as R2, and the ratio R1;
R2 ranges from 1.30 through 1.70 inclusive;
the socket includes a first hole and a second hole positioned on a deeper side than the first hole, whereinsaid second hole includes a reverse rotation suppressing portion which protrudes inwardly, configured such that engaging portion distance R1 and a maximum height of the reverse rotation suppressing portion R3 have a ratio R3;
R1 equal to or greater than 0.19, andsaid second hole includes an excess rotation suppressing portion which protrudes inwardly, configured such that engaging portion distance R1 and a maximum height of the excess rotation suppressing portion R4 have a ratio R4;
R1 equal to or greater than 0.19;
the engaging portion is movable into an engaging position EP and a non-engaging position NP at the second hole;
assuming that rotation of the weight body is rotation about an axis line Z, the engaging portion has a sectional shape with N-fold rotation symmetry with the axis line Z as a rotation axis, wherein N-fold rotation symmetry signifies that a cross-sectional shape after being rotated by 360/N degrees about a rotation axis coincides with the cross-sectional shape before such rotation; and
the maximum value of N is 1, 2, or 3.
2 Assignments
0 Petitions
Accused Products
Abstract
A head body h1 includes a recess part 14 for a socket. A socket 10 is attached to the recess part 14 for a socket. A weight body 12 is detachably attached to the socket 10. The weight body 12 can be secured by relative rotation of an angle +θ°. The weight body 12 can be detached by relative rotation of an angle−θ°. The weight body 12 includes an engaging part 32. The socket 10 includes a first hole part 18 and a second hole part 20. The engaging part 32 can take an engaging position EP and a non-engaging position NP at the second hole part 20 by the relative rotations. A sectional shape of the engaging part 32 has N-fold rotation symmetry. N is an integer of 1 or greater and 3 or less.
90 Citations
10 Claims
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1. A golf club head comprising:
- a head body including a recess portion for a socket;
a socket attached to the recess portion for a socket; and
a weight body detachably attached to the socket, whereinthe weight body can be secured by relative rotation of an angle +θ
°
to the socket;the secured weight body can be detached by relative rotation of an angle −
θ
°
to the socket;the weight body includes an engaging portion for engaging the socket, wherein a distance between a central point and a point farthest from the central point in an outline of a section of the engaging portion is defined as R1, a distance between a central point and a point nearest to the central point in an outline of a section of the engaging portion is defined as R2, and the ratio R1;
R2 ranges from 1.30 through 1.70 inclusive;the socket includes a first hole and a second hole positioned on a deeper side than the first hole, wherein said second hole includes a reverse rotation suppressing portion which protrudes inwardly, configured such that engaging portion distance R1 and a maximum height of the reverse rotation suppressing portion R3 have a ratio R3;
R1 equal to or greater than 0.19, andsaid second hole includes an excess rotation suppressing portion which protrudes inwardly, configured such that engaging portion distance R1 and a maximum height of the excess rotation suppressing portion R4 have a ratio R4;
R1 equal to or greater than 0.19;the engaging portion is movable into an engaging position EP and a non-engaging position NP at the second hole; assuming that rotation of the weight body is rotation about an axis line Z, the engaging portion has a sectional shape with N-fold rotation symmetry with the axis line Z as a rotation axis, wherein N-fold rotation symmetry signifies that a cross-sectional shape after being rotated by 360/N degrees about a rotation axis coincides with the cross-sectional shape before such rotation; and
the maximum value of N is 1, 2, or 3. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- a head body including a recess portion for a socket;
Specification
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Current AssigneeSumitomo Rubber Industries Limited
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Original AssigneeDunlop Sports Co. Ltd. (Sumitomo Rubber Industries Limited)
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InventorsYamamoto, Akio
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Primary Examiner(s)PIERCE, WILLIAM M
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Application NumberUS14/139,608Publication NumberTime in Patent Office897 DaysField of Search473/334, 473/335, 473/339, 473/338, 473/345, 473/349US Class Current1/1CPC Class CodesA63B 2053/0491 with added weights, e.g. ch...A63B 53/04 HeadsA63B 53/0433 with special sole configura...A63B 53/0466 wood-typeA63B 53/047 iron-typeA63B 53/0487 for putters A63B53/065 take...A63B 60/00 Details or accessories of g...A63B 60/02 Ballast means for adjusting...
