consistently close to the desired loft angles, and to reduce opening 36 at its top end which leads to a bore for receiving
inconsistencies and structural weaknesses that may be and retaining the shaft 34. The shaft 34 may be of any
caused by attaching separate face and hosel pieces. This is particular configuration and length and may be customized
accomplished by stamping the hosel in one piece with the to meet each golfer's needs, and may be made from stainless
face. The golf club head according to the present invention 5 steel or reinforced composites, such as boron, graphite,
also promotes greater accuracy and increased distance on titanium or aluminum.
golf shots by providing a narrowed section at the hosel. Referring to FIG. 2, a plurality of concentric masses 37.
concentrating more weight or mass directly behind the 39 and 41 are provided on the rear surface 40 of the face and
center of percussion, and threadably coupling one weight hosel piece 22 at about the location of the center of percus
from a set of removable weights to the sole plate. 10 s;on CP. Concentric masses 37. 39 and 41 are formed as
raised edges extending rearwardly from the rear surface 40.
BRIEF DESCRIPTION OF THE DRAWINGS Concentric mass 37 has the smallest diameter, and is pref
FIG. 1 is an exploded perspective view of a first embodi- erably positioned substantially behind the center of percus
ment of the metalwood of the present invention; sion CP- Concentric mass 39 has a diameter which is larger
rnr^ - . , . . .. . t 15 than the diameter of mass 37, which is in turn positioned
FIG. 2 is another exploded perspective view of the . .. ,„ „. ., , *T, ,
metalwood of FIG T inside the mass 39. Similarly, concentric mass 41 has a
diameter which is larger than the diameter of mass 39. which
FIG. 3 is a bottom plan view or sole view of the metal- is in ^ positioned inside me ^ 41 diameter of
wood of FIG. 1; concentric mass 41 is preferably larger than the diameter of
FIG. 4 is a front view or club face view of the metalwood 20 a g0jf ball. By increasing the mass directly behind the center
of FIG. 1; of percussion CP, the energy transferred to the ball upon
FIG. 5 is a cross-sectional view taken along line 5—5 of impact is increased, thereby increasing the distance the ball
the metalwood of FIG. 3; travels.
FIG. 6 is a cross-sectional view taken along line 6—6 of FIG. 7 illustrates a modification to the weighting provided
the metalwood of FIG. 3; and 25 on the rear surface 40 of the face and hosel piece 22. A spiral
FIG. 7 is a rear view of the face plate of the metalwood mass 38 is provided °n the rear surface 40 of the face and
of FIG. 1 illustrating a modification of the weight. hosel Piece 22 at about me location of the center of percussion CR The spiral mass 38 is formed as a raised edge
DESCRIPTION OF THE PREFERRED extending rearwardly from the rear surface 40. and begins at
EMBODIMENTS 30 an inner end 42 and spirals gradually to a wider diameter
until it terminates at an outer end 44. The smallest diameter
The following detailed description is of the best presently 0f tne spiral mass 38 is preferably smaller than the diameter
contemplated modes of carrying out the invention. This 0f a goif ball, and widest diameter of the spiral mass 38 is
description is not to be taken in a limiting sense, but is made preferably larger than the diameter of a golf ball,
merely for the purpose of illustrating general principles of ^ to addition> me face and hosel iece 22 j^, a t ^e ^
embodiments of the invention. The scope of the invention is a b(Mom ed 4g hayi a ^ en£, terminati at ^e toe
best defined by Ihe appended claims. portion 32 rf ^ top ^ 46 and a ... endterminating
FIGS. 1-6 illustrate a first preferred embodiment of the at the hosel 30, and a curved hosel edge 50 below the hosel
present invention. A golf club head or metalwood 20 is made 30 having one end terminating at the heel portion 28 of the
by attaching three separate pieces of forged or stamped top edge 46 and another end terminating at the second end
metal: a face and hosel piece 22. a crown or top piece 24 and Qf the bottom edge 48. As shown in FIG. 2. the top edge 46
a bottom piece 26. and me bottom edge 48 are raised rearwardly from the rear
The face and hosel piece 22 has a ball-striking face 27. a surface 40 of the face and hosel piece 22.
heel portion 28, a hosel 30. and a toe portion 32. all of which 45 In addition, as shown in HGS. 1. 2.4.5 and 7, the hosel
are forged or stamped as one piece. The face 27 has a center 30 has a section, indicated by the numeral 84. which is
of percussion or "sweet spot" CP, which represents the spot "pinched" or narrowed to a dimension or width dl adjacent
of desired contact with the ball. This center of percussion CP the heel portion 28 in the direction extending from the heel
is preferably located at approximately the center of the face portion 28 to the toe portion 32. The dimension or width d2
27 and has a diameter of approximately 1.685 inches, which 50 0f me hosel 30 in the front to rear direction, as shown in
is the diameter of a golf ball designed to meet the specifi- FIGS. 1 and 6. remains the same throughout the hosel 30.
cations of the United States Golf Association. However. Therefore, the width dl of the narrowed hosel section 84 is
depending on the size of the club head 20. the center of iess than the width d2 that is substantially transverse to it.
percussion CP could have a slightly larger size, and could The "pinched" or narrowed hosel 30 provides an aerody
extend a small distance in any direction from the exact 55 narmc configuration which reduces drag and reduces hosel
center of the face 27. and cjub head torque at impact, thereby increasing club head
In addition, the surface of the face 27 is positioned at an speed. This "pinched" design also adds strength to the hosel
angle (see FIG. 6) to provide the desired club head loft. For 30 in the front to rear direction, especially when the face 27
example, the face 27 of a driver is typically provided with of the club head 20 impacts the golf ball,
a 8 to 12 degree loft, while that of a three-wood is typically ^ jhe crown piece 24 has a slightly convex upper cover
provided wilh a 15 degree loft. The surface of the face 27 has having a peripheral edge 52. a front edge 54 having a first
scorelines 29 provided horizontally across for increasing end terminating at a first end of the peripheral edge 52 as
friction between the ball and the face 22. which increases the indicated by numeral 55 in FIG. 1, and a curved edge 56
spin on the ball to enable the ball to perform better aerody- having a first end terminating at a second end of the
nanucally. 65 peripheral edge 52 as indicated by numeral 57 in FIG. 1. and
A shaft 34 is connected to the club head 20 at the hosel 30 a second edge terminating at a second end of the front edge
disposed adjacent to the heel portion 28. The hosel 30 has an 54 as indicated by numeral 58 in FIG. 1.