MULTI-MATERIAL GOLF CLUB HEAD
A multi-material golf club head having an improved performance is disclosed. More specifically, the present invention relates to a multi-material golf club head having a metallic frontal portion and a lightweight aft portion with an addition of an internal ribbon support member. The internal ribbon support member may include a secondary wall, separating an internal overall volume of said golf club head into a frontal volumetric chamber and a rear volumetric chamber.
1 . A golf club head comprising:
a frontal striking face portion located at a frontal portion of said golf club head; and
an aft body portion, attached to the rear of said striking face portion;
wherein said aft body portion further comprises;
a lightweight shell; and
an internal ribbon support member, attaching to an internal surface of said lightweight shell around a skirt of said lightweight shell;
wherein said internal ribbon support member further comprises a secondary wall, separating an internal overall volume of said golf club head into a frontal volumetric chamber and a rear volumetric chamber, and wherein said secondary wall is a y-shaped structure, wherein the y-shaped structure comprises:
a first arm connecting to a crown portion of said lightweight shell; and
a second arm connecting to a sole portion of said lightweight shell.
2 . The golf club head of claim 1 , wherein said Volumetric Ratio is between about 13.9 to about 17.1.
3 . The golf club head of claim 2 , wherein said Volumetric Ratio is about 15.4.
4 . The golf club head of claim 1 , wherein said frontal striking face portion is made from titanium material.
5 . The golf club head of claim 4 , wherein said lightweight shell further comprises;
a lightweight crown sub-shell comprising said crown portion of said lightweight shell, and
a lightweight sole sub-shell comprising said sole portion of said lightweight shell,
wherein said lightweight crown sub-shell and said lightweight sole sub-shell are formed independently of one another.
6 . The golf club head of claim 5 , wherein the entirety of said lightweight shell and said internal ribbon support member are both made from a fiber reinforced polymer.
7 . The golf club head of claim 5 , wherein only said lightweight crown sub-shell is made from a fiber reinforced polymer.
8 . The golf club head of claim 5 , wherein said golf club head produces a sound that has a Critical Time T critical of greater than about 0.01 seconds and less than about 0.02 seconds; said Critical Time T critical is defined as the amount of time it take said sound to oscillate from a peak amplitude A max to a point of 10% of said peak amplitude A max .
9 . The golf club head of claim 8 , wherein said Critical Time T critical is greater than about 0.015 seconds and less than about 0.02 seconds.
10 . The golf club head of claim 9 , wherein said Critical Time T critical is greater than about 0.0175 seconds and less than about 0.02 seconds.
11 . A golf club head comprising:
a frontal striking face portion located at a frontal portion of said golf club head; and
an aft body portion, attached to the rear of said striking face portion;
wherein said aft body portion further comprises;
a lightweight shell; and
an internal ribbon support member, attaching to an internal surface of said lightweight shell around a skirt of said lightweight shell;
wherein said internal ribbon support member further comprises a secondary wall, separating an internal overall volume of said golf club head into a frontal volumetric chamber and a rear volumetric chamber, and wherein said secondary wall is a y-shaped structure, wherein the y-shaped structure comprises:
a first arm connecting to a crown portion of said lightweight shell; and
a second arm connecting to a sole portion of said lightweight shell;
wherein said golf club head has a Volumetric Ratio of between about 12.6 to about 19.1,
said Volumetric Ratio defined as
Volumetric
Ratio
=
Frontal
Volumetric
Chamber
Volume
Rear
Volumetric
Chamber
Volume
.
12 . The golf club head of claim 11 , wherein said frontal striking face portion is made from titanium material.
13 . The golf club head of claim 12 , wherein said lightweight shell further comprises;
a lightweight crown sub-shell comprising said crown portion of said lightweight shell, and
a lightweight sole sub-shell comprising said sole portion of said lightweight shell,
wherein said lightweight crown sub-shell and said lightweight sole sub-shell are formed independently of one another.
14 . The golf club head of claim 13 , wherein the entirety of said lightweight shell and said internal ribbon support member are both made from a fiber reinforced polymer.
15 . The golf club head of claim 13 , wherein only said lightweight crown sub-shell is made from a fiber reinforced polymer.
16 . The golf club head of claim 13 , wherein said golf club head produces a sound that has a Critical Time T critical of greater than about 0.01 seconds and less than about 0.02 seconds; said Critical Time T critical is defined as the amount of time it take said sound to oscillate from a peak amplitude A max to a point of 10% of said peak amplitude A max .
17 . A golf club head comprising:
a frontal striking face portion located at a frontal portion of said golf club head; and
an aft body portion, attached to the rear of said striking face portion;
wherein said aft body portion further comprises;
a lightweight shell; and
an internal ribbon support member, attaching to an internal surface of said lightweight shell around a skirt of said lightweight shell;
wherein said internal ribbon support member further comprises a secondary wall, separating an internal overall volume of said golf club head into a frontal volumetric chamber and a rear volumetric chamber, and wherein said secondary wall comprises:
a first arm connecting to a crown portion of said lightweight shell; and
a second arm connecting to a sole portion of said lightweight shell.
18 . The golf club head of claim 17 , wherein said lightweight shell further comprises;
a lightweight crown sub-shell comprising said crown portion of said lightweight shell, and
a lightweight sole sub-shell comprising said sole portion of said lightweight shell,
wherein said lightweight crown sub-shell and said lightweight sole sub-shell are formed independently of one another.
19 . The golf club head of claim 18 , wherein the entirety of said lightweight shell and said internal ribbon support member are both made from a fiber reinforced polymer.
20 . The golf club head of claim 18 , wherein only said lightweight crown sub-shell is made from a fiber reinforced polymer.