An aerodynamic golf club head producing reduced aerodynamic drag forces via unique club head relationships.

Embodiments of golf club heads with apertures and methods to manufacture golf club heads are generally described herein. Other embodiments may be described and claimed.

A golf club head that is capable improving on the inertia properties of a golf club head all while also improving the Center of Gravity (CG) location is disclosed herein. More specifically, the golf club head in accordance with the present invention achieves a relative low Moment of Inertia (MOI) about the Z-axis (MOI-Z), a relatively low MOI about the Shaft-axis (MOI-SA), a low MOI about the Y-axis (MOI-Y) and a high MOI about the X-axis (MOI-X).

Embodiments of golf club face plates with internal cell lattices are presented herein. Other examples and related methods are also disclosed herein.

A golf club head having a multi-layered striking face is disclosed herein. More specifically, the golf club head in accordance with the present invention has an external frontal face layer, an internal rear face layer, and an intermediary sandwiched face layer juxtaposed between the external frontal face layer and the internal rear face layer. The intermediary sandwiched face layer may generally be made out of a high flexural modulus polymeric material.

A golf club head, when oriented in a reference position, includes: a striking face; a top portion; and a sole portion opposite the top portion. The sole portion includes a leading edge, a trailing edge, at least one sole rail generally elongate in a front-to-rear direction, and a sole contact point located on the at least one sole rail. In a virtual vertical plane extending in the front-to-rear direction and passing through the sole contact point, (i) the sole portion includes a sole length Ls measured in the front-to-rear direction from the leading edge to the trailing edge and (ii) the sole contact point is spaced rearwardly from the leading edge by a distance D1 no greater than 0.8*Ls.

Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are generally described herein. In one example, a golf club heady ma include a hollow body portion having a toe portion with a toe portion edge, a heel portion with a heel portion edge, a back portion with a back wall portion, a top portion with a top portion edge, a sole portion with a sole portion edge, and a front portion. A face portion may be coupled to the front portion and include a front surface and a back surface. The body portion includes a face support portion including a composite material and coupled to the back surface of the face portion. The face support portion may include at least one reinforcement portion. Other examples and embodiments may be described and claimed.

Methods of manufacturing a golf club head with one or more stiffening members proximate the face, and particularly solid rods or a plate with one or more cutouts, is disclosed herein. One method includes the steps of preparing a wax mold of a golf club head including a plate stiffening member with excess material, casting the golf club head, and machining away the excess material. Another method includes the steps of casting a golf club body, providing a plate stiffening member, providing a face component such as a face cup, tack welding the plate stiffening member and the face component to the golf club body, and welding these parts together.

A variable face thickness pattern is determined for a golf club head by setting a target value for a first constraint. Parametrization zones are defined and values set for a first parameter and a second parameter for each parametrization zone. Resultant first constraint values are evaluated from simulated impacts against the target first constraint value and the values are changed for the first and second parameters to result in a simulated face thickness pattern. In one aspect, the club head has a maximum coefficient of restitution at a first location of the striking face and a second coefficient of restitution that is no less than 98% of the maximum coefficient of restitution at a second location that is at least 7.5 mm from the first location. In another aspect, the club head has a moment of inertia, Izz, and a mass, mh, satisfying: Izz>mh*9.3 cm.sup.2.

A golf club head includes a golf club body including a crown, a sole, and a skirt connected between the crown and the sole, the golf club body including a front including a leading edge and a back including a trailing edge, and a hosel connected to the golf club body; a face connected to the front of the golf club body, the face including a geometric center, the golf club head including modifiable boundary conditions.