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US 7,066,833 B2Granted
Golf club head
AssigneeSumitomo Rubber Industries, Ltd.
InventorAkio Yamamoto
Life of this patent
Estimating the term…
Abstract
A golf club head comprises a face portion having a front face defining a clubface for hitting a ball and a back face facing a hollow, wherein the clubface is provided along the edge thereof with a frontal groove having a groove width of not less than 0.5 mm, and the back face is provided with a backside groove extending along the frontal groove.
Claims14
A golf club head comprising
- a face portion having a front face defining a clubface for hitting a ball and a back face facing a hollow,
- said clubface provided along the edge thereof with a frontal groove having a groove width of not less than 0.5 mm, and
- said back face provided with a backside groove extending along the frontal groove, wherein
- the backside groove has a groove width in a range of from 6 to 30 times the groove width of the frontal groove.
1 more element
A golf club head comprising
- a face portion having a front face defining a clubface for hitting a ball and a back face facing a hollow,
- said clubface provided along the edge thereof with a frontal groove having a groove width of not less than 0.5 mm, and
- said back face provided with a backside groove extending along the frontal groove, wherein
- the frontal groove is continuous, and
- the backside groove is surrounded and enclosed by the frontal groove when viewed from the front.
2 more elements
A golf club head comprising
- a face portion having a front face defining a clubface for hitting a ball and a back face facing a hollow,
- said clubface provided along the edge thereof with a frontal groove having a groove width of not less than 0.5 mm, and
- said back face provided with a backside groove extending along the frontal groove, wherein
- the frontal groove is discontinuous, and
- the backside groove is surrounded by the frontal groove when viewed from the front.
2 more elements
A golf club head comprising
- a face portion having a front face defining a clubface for hitting a ball and a back face facing a hollow,
- said clubface provided along the edge thereof with a frontal groove having a groove width of not less than 0.5 mm and not more than 4.0 mm, and
- said back face provided with a backside groove extending along the frontal groove, wherein
- said groove width of the frontal groove is between 1.0 mm and 3.0 mm.
1 more element
A golf club head comprising
- a face portion having a front face defining a clubface for hitting a ball and a back face facing a hollow,
- said clubface provided along the edge thereof with a frontal groove having a groove width of not less than 0.5 mm but not more than 4.0 mm, and
- said back face provided with a backside groove extending along the frontal groove, wherein
- said frontal groove is disposed outside an impact area (P) of the clubface, and the total length of the frontal groove along the edge is at least 40% of the overall length of the edge.
1 more element
Dependencies are inferred from the claim text.