A golf club head is provided having a club body having a front portion, a rear portion, a toe portion, and a heel portion. The club head also having a central portion connected with the front portion. A frame is connected with the central portion configured to provide a lightweight crown portion being located above an offset plane.

Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a top portion of a golf club head includes an alignment aid having a first plurality of strip portions and a second plurality of strip portions bounded by a virtual outline. The first plurality of strip portions have different surface areas. The second plurality of strip portions have different surface areas. The first plurality of strip portions and the second plurality of strip portions touch or border upon the virtual outline. The first plurality of strip portions are spaced apart in a rear-to-front direction of the golf club head and are ordered by decreasing surface area. The second plurality of strip portions are spaced apart in the rear-to-front direction and are ordered by decreasing surface area. Other examples and examples may be described and claimed.

A golf club head having a laser-generated features to create contrast on the club face of the golf club head. The club face includes a central region, a toe region, and a heel region. The central region includes a first plurality of laser-generated features that provide a height-intersection coverage of the central region, a width-intersection coverage of the central region, and a surface-area coverage of the central region. The toe region includes a second plurality of laser-generated features that provide a height-intersection coverage of the toe region, a width-intersection coverage of the toe region, and a surface-area coverage of the toe region. The heel region includes a third plurality of laser-generated features that provide a height-intersection coverage of the heel region, a width-intersection coverage of the heel region, and a surface-area coverage of the heel region.

Aspects of the invention are directed to golf club having a crown, a sole, a face, and a face alignment feature located on the face.

A putting training apparatus is a putting training aid for teaching the accuracy of aim when putting in the game of golf. A rectangularly shaped elongated planar member, which has a flat top surface with markings that guide the user to hit the ball with a putter along a straight trajectory and into a putting cup in the elongated planar member at the opposite end from the putting end. An attachable guide having a marker attaches to the putter that the user attempts to keep placed above an offset straight line helping the stroke to move along the straight path.

An embodiment of an exercise monitoring apparatus is shown. Herein, the exercise monitoring apparatus comprises a casing, a fastening member, a first laser device and a second laser device. The first laser device is oriented so that, when actuated, the device outwardly projects a first light beam in a direction substantially perpendicular to a top surface of the casing. The first light beam visually produces a line of light. The second laser device is oriented so that, when actuated, the device outwardly projects a second light beam in a direction substantially perpendicular to one of the sidewalls of the casing and substantially perpendicular to the first light beam.

Disclosed is a putter including an interchangeable sleeve mechanism capable of easily replacing and mounting a shaft, the putter comprising a main body part, a downward extension part, a blade formation part having a plate-shaped structure which extends to a predetermined length rearward from a lower end of the downward extension part and has an area having a predetermined size, a plurality of weight mounting grooves disposed to be spaced a certain interval from each other in an upper surface or a side surface of the blade formation part and configured to bind weights in a detachable structure, and a sleeve mechanism mounted in a structure detachably attached to the binding groove of the main body part, having a block structure extending to a predetermined height upward, and formed with a shaft binding fastening hole recessed to a predetermined depth in an upper end surface.

A putter-type golf club head includes a main body. The main body includes a forward end, a rearward end opposite the forward end, a bottom portion, a top portion opposite the bottom portion, and a male-type hosel component defining a longitudinal axis that is forwardly canted relative to vertical. A face component is secured to the forward end of the main body. The face component includes a first element formed of a resilient material and a second element formed of a rigid material that is secured to the first element. A striking face generally defines a virtual striking face plane and is at least partially formed by the face component.

A putter-type golf club head that, when oriented in a reference position, includes a rear portion in communication with, and rearward of, a blade portion and having a rear portion top surface. The club head also includes a projection extending upwardly from the rear portion top surface, the projection having a projection top surface, a heel-ward side surface, a toe-ward side surface, and a rear surface, the projection top surface comprising a generally planar surface. And the club head further includes a sightline formed in the projection top surface and that comprises a groove at least partially filled with a filler material having a visually contrasting appearance to portions of the top surface surrounding the groove, the groove defining a virtual center line segment oriented in a substantially front-to-rear direction at a substantially constant height from a lowermost point of the sole between 16 mm and 26 mm.

A conventional length golf putter a first grip attached to the end of the shaft and a second grip attached to the shaft spaced from and below the first grip. The grips have matching frustoconical portions to create similar feel. The putter has a head with an alignment system to accommodate heel and toe putts.