Abstract: A golf club head includes a striking face with a plurality of scorelines. A first virtual vertical plane is perpendicular to the striking face and passes through a toe-wardmost extent of the scorelines, and a second virtual vertical plane is parallel to the first virtual vertical plane and passes through a heel-wardmost extent of the scorelines. A central region bounded by the first virtual vertical plane, the second virtual vertical plane, and a striking face periphery has a first average surface roughness Ra1 of between about 40 ?in and about 180 ?in. And a majority of a toe region hounded by the first vertical plane and the striking face periphery is textured to have a second average surface roughness Ra2 no less than 1.5 times Ra1.

Abstract: A golf club head includes a striking face with a plurality of scorelines. A first virtual vertical plane is perpendicular to the striking face and passes through a toe-wardmost extent of the scorelines, and a second virtual vertical plane is parallel to the first virtual vertical plane and passes through a heel-wardmost extent of the scorelines. A central region bounded by the first virtual vertical plane, the second virtual vertical plane, and a striking face periphery has a first average surface roughness Ra1 of between about 40 ?in and about 180 ?in. And a majority of a toe region bounded by the first vertical plane and the striking face periphery is textured to have a second average surface roughness Ra2 no less than 1.5 times Ra1.

Abstract: An iron-type golf club head comprising a topline, a sole in opposed relation to the topline, and a front portion extending from the topline toward the sole. The front portion includes a leading edge, a substantially planar hitting region including a face center, and a peripheral region. The peripheral region at least partially surrounds the hitting region such that the hitting region and the peripheral region define therebetween a visually-recognizable hitting region boundary line including a sole-proximate boundary line segment such that when the club head is oriented in a reference position relative to a virtual ground plane, and in a virtual vertical plane perpendicular to the hitting region and passing through the face center, the sole-proximate boundary line segment is vertically spaced above the leading edge by a distance D1 that is no less than 2.5 mm.

Abstract: A golf club head includes a striking face with a plurality of scorelines. A first virtual vertical plane is perpendicular to the striking face and passes through a toe-wardmost extent of the scorelines, and a second virtual vertical plane is parallel to the first virtual vertical plane and passes through a heel-wardmost extent of the scorelines. A central region bounded by the first virtual vertical plane, the second virtual vertical plane, and a striking face periphery has a first average surface roughness Ra1 of between about 40 ?in and about 180 ?in. And a majority of a toe region bounded by the first vertical plane and the striking face periphery is textured to have a second average surface roughness Ra2 no less than 1.5 times Ra1.

Abstract: A golf club head includes a heel portion, a toe portion, a hosel, and a striking face. The striking face includes a plurality of scorelines each having an average depth no less than about 0.10 mm, a plurality of first micro-grooves each having an average depth no greater than about 0.010 mm, and a plurality of second micro-grooves overlaid on the first micro-grooves, each of the second micro-grooves having an average depth greater than the average depth of the first micro-grooves. Some embodiments can also have a plurality of textured surface treatment regions superimposed on the overlaid first and second micro-grooves so as to at least partially intersect the micro-grooves.

Abstract: Generally, described are methods, apparatuses and systems for a recommendation engine which determines a recommendation based upon a terrestrial parameter and an overall factor unrelated to the terrestrial parameter. The recommendation engine may receive as inputs: (1) some data relating to the terrestrial parameter and (2) some data relating to user operation of a mechanical device. An overall factor may be calculated or obtained, at least in part, from the data relating to user operation of the mechanical device. And based upon the data relating to the terrestrial parameter and the overall factor, a recommendation may be determined and transmitted. In one embodiment, as part of the transmission process, the recommendation may be displayed to a user requesting the recommendation.

Abstract: An iron-type golf club head comprising a topline, a sole in opposed relation to the topline, and a front portion extending from the topline toward the sole. The front portion includes a leading edge, a substantially planar hitting region including a face center, and a peripheral region. The peripheral region at least partially surrounds the hitting region such that the hitting region and the peripheral region define therebetween a visually-recognizable hitting region boundary line including a sole-proximate boundary line segment such that when the club head is oriented in a reference position relative to a virtual ground plane, and in a virtual vertical plane perpendicular to the hitting region and passing through the face center, the sole-proximate boundary line segment is vertically spaced above the leading edge by a distance D1 that is no less than 2.5 mm.

Abstract: The present application is directed to a method for use in a system implementing a reference golf club, one or more sensors associated with the reference golf club, and a computing device.

Abstract: An iron-type golf club head comprising a topline, a sole in opposed relation to the topline, and a front portion extending from the topline toward the sole. The front portion includes a leading edge, a substantially planar hitting region including a face center, and a peripheral region. The peripheral region at least partially surrounds the hitting region such that the hitting region and the peripheral region define therebetween a visually-recognizable hitting region boundary line including a sole-proximate boundary line segment such that when the club head is oriented in a reference position relative to a virtual ground plane, and in a virtual vertical plane perpendicular to the hitting region and passing through the face center, the sole-proximate boundary line segment is vertically spaced above the leading edge by a distance D1 that is no less than 2.5 mm.

Abstract: Generally, described are methods, apparatuses and systems for a recommendation engine which determines a recommendation based upon a terrestrial parameter and an overall factor unrelated to the terrestrial parameter. The recommendation engine may receive as inputs: (1) some data relating to the terrestrial parameter and (2) some data relating to user operation of a mechanical device. An overall factor may be calculated or obtained, at least in part, from the data relating to user operation of the mechanical device. And based upon the data relating to the terrestrial parameter and the overall factor, a recommendation may be determined and transmitted. In one embodiment, as part of the transmission process, the recommendation may be displayed to a user requesting the recommendation.

Abstract: A method of customizing a golf club, wherein the method includes generating operating data representative of a user operating a mechanical device. The operating data is generated by a first sensor sized and configured to be removably positioned in a mounting port formed on the mechanical device during operation of the mechanical device. The sensor is interchangeably positionable in the mounting port with at least one mass insert, the at least one mass insert being adapted to be interchangeably positioned in the mounting to provide at least two different mass configurations. The method further includes determining a recommended configuration of the at least one mass insert specific to the user based on the operating data generated by the sensor, and transmitting information representative of the recommended mass insert.

Abstract: An iron-type golf club head assembly kit including a club head main body, a first sole component, and a second sole component interchangeably associable with the main body. When the first sole component is associated with the main body, the main body and the first sole component form a first club head comprising a sole surface having a first parting line, formed between the first sole component and the main body, and a first sole contour. When the second sole component is associated with the main body, the main body and the second sole component form a second club head comprising a second sole surface having a second parting line, formed between the second sole component and the main body, and a second sole contour that differs from the first sole contour.

Abstract: An iron-type golf club head assembly kit including a club head main body, a first sole component, and a second sole component interchangeably associable with the main body. When the first sole component is associated with the main body, the main body and the first sole component form a first club head comprising a sole surface having a first parting line, formed between the first sole component and the main body, and a first sole contour. When the second sole component is associated with the main body, the main body and the second sole component form a second club head comprising a second sole surface having a second parting line, formed between the second sole component and the main body, and a second sole contour that differs from the first sole contour.

Abstract: Provided are a golf club head and a method for producing the golf club head. The golf club head comprises a striking face that in turn comprises a recurrent texture pattern that has a period T and that is defined by a plurality of depressions, each depression having an average depth no greater than 0.10 mm. The striking face also comprises a plurality of scorelines that at least partially intersect the recurrent texture pattern and that have a scoreline pitch Ps such that T/Ps is greater than 1.0, each scoreline having an average depth no less than 0.10 mm.

Abstract: Generally, described are methods, apparatuses and systems for a recommendation engine which determines a recommendation based upon a terrestrial parameter and an overall factor unrelated to the terrestrial parameter. The recommendation engine may receive as inputs: (1) some data relating to the terrestrial parameter and (2) some data relating to user operation of a mechanical device. An overall factor may be calculated or obtained, at least in part, from the data relating to user operation of the mechanical device. And based upon the data relating to the terrestrial parameter and the overall factor, a recommendation may be determined and transmitted. In one embodiment, as part of the transmission process, the recommendation may be displayed to a user requesting the recommendation.

Abstract: Provided are a golf club head and a method for producing the golf club head. The golf club head comprises a striking face that in turn comprises a recurrent texture pattern that has a period T and that is defined by a plurality of depressions, each depression having an average depth no greater than 0.10 mm. The striking face also comprises a plurality of scorelines that at least partially intersect the recurrent texture pattern and that have a scoreline pitch Ps such that T/Ps is greater than 1.0, each scoreline having an average depth no less than 0.10 mm.

Abstract: The present application is direction to a computing device having a memory and a processor. The processor is configured to receive data generated in response to a motion of a sporting apparatus, where the data includes a first data relating to a first characteristic of the motion of the sporting apparatus. The first data is based on a comparison between at least two different directional segments of a path created by a first location on the sporting apparatus during the motion of the sporting apparatus. The processor is further configured to analyze the data to determine a skill value, determine a recommended sporting apparatus from a group of at least two sporting apparatuses based on the skill value; and transmit information relating to the recommended sporting apparatus.