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 golf putter includes a putting head including a putting head body, configured with a flat bottom surface, a rear ward angled hosel aperture and a rear angled flat surface; left and right indentations for receiving weights, and left and right detachable wheels attached on sides of the putting head body, such that the putting head is configured to be slidable along a putting surface to enable a golfer to line up the putting head, a golf ball, and a target cup in a front of the golfer, in order to hit the golf ball with a forward sliding motion of the putting head.

Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion having a face portion for striking a golf ball and an enclosed interior cavity. A filler material may be inside the interior cavity and may reinforce the face portion. The filler material may include a low density polymer material to enable discretionary mass placement to other areas of the golf club head to improve certain mass properties of the golf club head. Other examples and embodiments may be described and claimed.

Examples of hosels and methods to manufacture hosels are generally described herein. In one example, a hosel may include a neck portion configured to receive a golf shaft. The neck portion may have a transition portion that tapers in a downward direction. An insert portion may extend downward from the transition portion and may be configured to be received inside a cavity of a putter-type golf club head. The insert portion may alternate between a first perimeter size and a second perimeter size before tapering toward a terminal end. Other examples may be described and claimed.

Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a body portion of a golf club head may include a front portion. A face portion may be located at the front portion and may include a central projection located at or proximate a geometric center of the face portion and a plurality of outer projections disposed at different distances from the central projection. For each and every combination of any two outer projections of the plurality of outer projections, a lesser volume is associated with whichever one of the two outer projections is located closest to the central projection and a greater volume is associated with whichever one of the two outer projections is located farthest from the central projection. Other examples may be described and claimed.

Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a putter-type golf club head may include a body portion. The body portion may include a toe portion, a heel portion, a front portion, a rear portion, a top portion, a sole portion, and a weight port. The weight port may have a threaded section and an unthreaded section. A first weight portion may be coupled to the unthreaded section by an epoxy or other adhesive. A second weight portion may be threadingly fastened to the threaded section. The first weight portion may include a central through-bore to provide at least one of air relief or relief for the epoxy or other adhesive. Other examples may be described and claimed.

Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a body portion of a golf club head may include a cavity having an opening and an internal structure defined by a wall portion and a base portion. A hosel portion may include an insert portion and a neck portion extending therefrom. The hosel portion may be attached to the body portion by an interference fit between the neck portion and the opening of the cavity. The insert portion may be received inside the cavity and may be spaced apart from the internal structure of the cavity. A space between the insert portion and the internal structure of the cavity may be partially or entirely filled with an adhesive to hold the hosel portion in place. Other examples may be described and claimed.

Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a body portion of a golf club head may include a top portion with a recess and a pocket inside the recess. A plate portion may be coupled to the body portion and may include a flat portion configured to fit inside the recess and a boss portion configured to fit inside the pocket. The boss portion may include a threaded port aligned with a through-port extending from a base portion of the pocket through to a sole portion of the body portion. A fastener may be inserted through a sole-end of the through-port and threadingly coupled to the threaded port to secure the plate portion to the body portion. Other examples may be described and claimed.

An embodiment of a putter type golf club head with an upper and lower portion, made from two different materials, is enclosed herein. Other embodiments are described herein.

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.