CAVITY BACK GOLF CLUB HEAD
First Claim
1. A golf club head comprising:
- a body;
a cavity defined by an interior surface of the body;
a first silicone having a first hardness and disposed contiguously against a substantial portion of the interior surface therein partially filling the cavity;
a second silicone having a second hardness of at least 20 Shore A points lower than the first silicone and juxtaposed against an outer surface of the first silicone therein filling the cavity, anda polycarbonate insert attached to an outer surface of the second silicone to provide a zero gap appearance.
2 Assignments
0 Petitions
Accused Products
Abstract
A golf club head having a cavity back design with a cavity therein for placement of lightweight dual-durometer silicone. The club head is prepared by brushing an adhesive onto the interior wall, but omitting a pre-selected area of the wall to allow silicone to shrink away at the omitted area to allow for control of the shrinkage. A first shot of 80 Shore A silicone is placed into the cavity and disposed against the interior wall. Next, a softer 50 Shore A silicone is juxtaposed against the first shot of silicone and it is pressed using a hot mold finishing tool wherein a substantial portion of the cavity is filled. A polycarbonate insert is attached to an outer surface of the second silicone to provide a zero gap appearance. A tan delta ratio of the first silicone to the second silicone is greater than 1.6. A storage modulus of the first silicone is at least three times greater than the second silicone. And, a loss modulus of the first silicone is at least ten times the second silicone.
-
Citations
25 Claims
-
1. A golf club head comprising:
-
a body; a cavity defined by an interior surface of the body; a first silicone having a first hardness and disposed contiguously against a substantial portion of the interior surface therein partially filling the cavity; a second silicone having a second hardness of at least 20 Shore A points lower than the first silicone and juxtaposed against an outer surface of the first silicone therein filling the cavity, and a polycarbonate insert attached to an outer surface of the second silicone to provide a zero gap appearance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13)
-
-
14. A golf club comprising:
-
a cavity back body having an interior surface defining a cavity, and a hosel portion for attaching a shaft to the body; a first silicone having a Shore A hardness of about 70 to 80 disposed contiguously against a substantial portion of the interior surface therein partially filling the cavity; a second silicone having a Shore A hardness at least 20 points lower than the first silicone, the second silicone juxtaposed against the first silicone therein filling the cavity; a tan delta value of the first silicone to the second silicone greater than 1.6; a storage modulus of the first silicone at least three times greater than the second silicone; and a loss modulus of the first silicone at least ten times the second silicone. - View Dependent Claims (9, 15, 16, 17, 18)
-
-
19. A golf club head comprising:
-
a body; a cavity defined by an interior surface of the body; a first silicone having a first hardness and disposed contiguously against a substantial portion of the interior surface therein partially filling the cavity; a second silicone having a second hardness of at least 20 Shore A points lower than the first silicone and juxtaposed against the first silicone therein filling the cavity; and a no-adhesive zone created on a lower front portion of the interior surface for allowing shrinkage of the first silicone to be confined to that portion of the club head. - View Dependent Claims (20, 21, 22, 23, 24, 25)
-
Specification