Iron-type golf club head
First Claim
1. An iron-type golf club head comprisinga top having an upper surface of the club head,a sole having a bottom surface of the club head,a toe connecting between the top and the sole,a heel being in the opposite side of the toe,a face portion being surrounded by the top, the sole and the toe, the face portion comprising a thick part having an area including a sweet spot of the club head and a thin part provided around the thick part and having a thickness smaller than the thick part,the thin part comprising at least upper thin part provided between the top and the thick part,the upper thin part having a width increasing from both sides of the toe and the heel toward therebetween,the upper thin part having an outer edge extending by the top and an inner edge extending along the thick part, andthe inner edge includes an curve protruding toward the sole.
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Accused Products
Abstract
An iron-type golf club head comprises a top having an upper surface of the club head, a sole having a bottom surface of the club head, a toe connecting between the top and the sole, a heel being in the opposite side of the toe, a face portion being surrounded by the top, the sole and the toe, the face portion comprising a thick part having an area including a sweet spot of the club head and a thin part provided around the thick part and having a thickness smaller than the thick part, the thin part comprising at least upper thin part provided between the top and the thick part, and the upper thin part having a width increasing from both sides of the toe and the heel toward therebetween.
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Citations
14 Claims
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1. An iron-type golf club head comprising
a top having an upper surface of the club head, a sole having a bottom surface of the club head, a toe connecting between the top and the sole, a heel being in the opposite side of the toe, a face portion being surrounded by the top, the sole and the toe, the face portion comprising a thick part having an area including a sweet spot of the club head and a thin part provided around the thick part and having a thickness smaller than the thick part, the thin part comprising at least upper thin part provided between the top and the thick part, the upper thin part having a width increasing from both sides of the toe and the heel toward therebetween, the upper thin part having an outer edge extending by the top and an inner edge extending along the thick part, and the inner edge includes an curve protruding toward the sole.
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12. An iron-type golf club head comprising
a top having an upper surface of the club head, a sole having a bottom surface of the club head, a toe connecting between the top and the sole, - a heel being in the opposite side of the toe,
a face portion being surrounded by the top, the sole and the toe, the face portion comprising a thick part having an area including a sweet spot of the club head and a thin part provided around the thick part and having a thickness smaller than the thick part, the thin part comprising at least upper thin part provided between the top and the thick part, the upper thin part having a width increasing from both sides of the toe and the heel toward therebetween, wherein each ratio W3/W1 and W3/W2 of the respective widths is in a range of from 1.50 to 3.0, where W1;
the smallest width in the toe side of the upper thin part,W2;
the smallest width in the heel side of the upper thin part andW3;
the largest width of an intermediate portion of the upper thin part.
- a heel being in the opposite side of the toe,
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13. An iron-type golf club head comprising
a top having an upper surface of the club head, a sole having a bottom surface of the club head, a toe connecting between the top and the sole, - a heel being in the opposite side of the toe,
a face portion being surrounded by the top, the sole and the toe, the face portion comprising a thick part having an area including a sweet spot of the club head and a thin part provided around the thick part and having a thickness smaller than the thick part, the thin part comprising an upper thin part provided between the top and the thick part, and a lower thin part provided between the sole and the thick part, the upper thin part having a width increasing from both sides of the toe and the heel toward therebetween, wherein in a vertical cross section of the club head passing through the sweet spot and being perpendicular to the face, a distance K1 parallel with the face between the sweet spot and the inner edge of the upper thin part is smaller than a distance K2 parallel with the face between the sweet spot and the inner edge of the lower thin part.
- a heel being in the opposite side of the toe,
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14. An iron-type golf club head comprising
a top having an upper surface of the dub head, a sole having a bottom surface of the club head, a toe connecting between the top and the sole, - a heel being in the opposite side of the toe,
a face portion being surrounded by the top, the sole and the toe, the face portion comprising a thick part having an area including a sweet spot of the club head and a thin part provided around the thick part and having a thickness smaller than the thick part, the thin part comprising an upper thin part provided between the top and the thick past, wherein the width of the upper thin part changes so as to become larger from both sides of toe and heel to its intermediate portion so that the upper thin part is enlarged near the sweet spot.
- a heel being in the opposite side of the toe,
Specification
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- Resources
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Current AssigneeSRI Sports Limited (Sumitomo Rubber Industries Limited)
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Original AssigneeSRI Sports Limited (Sumitomo Rubber Industries Limited)
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InventorsHirano, Tomoya
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Primary Examiner(s)GORDEN, RAEANN
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Application NumberUS11/269,800Publication NumberTime in Patent Office1,070 DaysField of Search473/334, 473/335, 473/342, 473/349, 473/350US Class Current473/342CPC Class CodesA63B 53/0408 characterised by specific d...A63B 53/0416 Heads having an impact surf...A63B 53/047 iron-type
