Abstract: A golf club head according to one or more aspects of the present invention may include a face portion or strike-face wall comprising a top inner boundary, an intermediate inner boundary, and a bottom inner boundary having a bottom-inner-boundary toe portion and a bottom-inner-boundary heel portion. The strike-face wall may further include a first uniform-thickness region, adjoining the top inner boundary, and a variable-thickness region adjoining the uniform-thickness region and a majority of the bottom inner boundary. In another example, the variable-thickness may adjoin a majority of the top inner boundary and the uniform-thickness region may adjoin a majority of the bottom inner boundary.

Abstract: A golf club equipment grouping includes a golf club and a golf club cover. The golf club includes a shaft and a club head attached to the shaft. The golf club cover includes a main body comprising first, second, and upper panels; a sleeve attached to the main body; and a pull member attached to the upper panel of the main body. The pull member in turn includes a first attachment point fixing the pull member to the main body and a second attachment point fixing the pull member to the main body. A body distance, which is the shortest distance between the first attachment point and the second attachment point as measured along the exterior of the main body, is greater than or equal to the minimum upper panel width.

Abstract: A computer program is disclosed for reconfiguring a property-adjustable golf club. The program receives data input corresponding to a current configuration of an adjustable feature of the golf club, and data input corresponding to trajectory adjustment information. Based on the data input, reconfiguration information is generated, and outputted, that corresponds to one of a plurality of configurations of the adjustable feature of the golf club.

Abstract: A method of selecting a preferred golf shaft for a player who uses an existing golf shaft, according to one or more aspects of the present invention, may comprise gathering a plurality of empirical data sets, each data set corresponding to an individual golf shaft selected from a plurality of golf shafts; providing a plurality of specification codes, each associated with an individual empirical data set of the plurality of empirical data sets; from the plurality of specification codes, identifying a first specification code associated with the existing golf shaft; gathering feedback associated with the existing golf shaft from the player; and using the feedback to select, from the plurality of specification codes, a second specification code corresponding to the preferred golf shaft.

Abstract: An exemplary golf club head having an increased amount of discretionary mass may be realized by utilizing improved drop angles, an improved average crown height, and/or articulation points. The discretionary mass may be placed low and deep in the club head to improve the location of the center of gravity as well as the inertial properties. A preferred break length may also be utilized to further improve the depth of the center of gravity. In one example, the center of gravity may be positioned to substantially align the sweet spot with the face center of the club head.

Abstract: A weight member for removable attachment to a weight port of a golf club head is provided. The weight member comprises a head that has a tool mating port for operatively receiving a portion of a fastening tool. The weight member further comprises a shaft that is associated with the head such that the shaft terminates at an end surface. The shaft has a threaded external surface and a non-threaded internal bore that extends from the end surface.

Abstract: A golf club head includes: a sole; a crown; a toe; a heel opposite the toe; a strike face generally bounded by a face perimeter edge, the strike face comprising a geometric center; a rear portion; and a substantially enclosed interior cavity at least partially delimited by the sole, the crown, the strike face, and the rear portion. The golf club head also includes at least one rib having a first portion secured to the strike face, having a second portion secured to the crown, and being positioned such that a location on the strike face laterally spaced toe-ward from the geometric center by no less than 0.4 in is associated with a COR value no less than 0.825.

Abstract: An exemplary golf club head having an increased amount of discretionary mass may be realized by utilizing improved drop angles, an improved average crown height, and/or articulation points. The discretionary mass may be placed low and deep in the club head to improve the location of the center of gravity as well as the inertial properties. A preferred break length may also be utilized to further improve the depth of the center of gravity. In one example, the center of gravity may be positioned to substantially align the sweet spot with the face center of the club head.

Abstract: A golf club head includes a main body having a top portion, a bottom portion, a striking face, and an interior surface. A weight member is coupled to the interior surface of the main body. In an imaginary vertical plane that passes through the weight member, the interior surface of the main body comprises a first point and a second point. An imaginary line passes through the first point and the second point. A first imaginary boundary line and a second imaginary boundary line, both passing through the weight member and being perpendicular to the imaginary line, pass through the first point and the second point, respectively. Between the first point and the second point, the interior surface of the main body has an irregularity factor of at least 1.2 and the weight member comprises a distribution factor of at most 1.0 and a conformity factor of at most 0.07.

Abstract: A weight element for slideable communication along first and second ribs of a weight path of a golf club head includes a first weight portion, a second weight portion, and a fastener extending through the first weight portion and at least partially into the second weight portion. The first and second weight portions are configured so that the first and second ribs may be interposed therebetween. The fastener is configured to independently rotate relative to the first and second weight portions, the rotation of the fastener causing the first and second weight portions to move toward each other in a manner capable of compressing contact surfaces of the first and second weight portions against the first and second ribs. And the contact surface of the first weight portion comprises an angular contour including surface portions angled to form at least one non-zero degree vertex.

Abstract: A wood-type golf club head includes a striking wall, a top portion, and a bottom portion comprising a club head wall portion and first and second ribs projecting from the wall portion. The club head also includes a weight element translatable along a weight path and that comprises a first weight portion, a second weight portion, and a fastener, the first and second ribs each being interposed between the first weight portion and the second weight portion such that the first weight portion is located proximate the club head wall portion and the second weight portion is located distal the club head wall portion. The second weight portion further comprises a contact surface having an angular contour including surface portions angled to form at least one non-zero degree vertex, the surface portions being complementary to, and shaped to mate with, the bottom portion of the club head.

Abstract: A golf club head has a striking face with a plurality of scorelines including a first scoreline and a second scoreline adjacent thereto. The striking face also has a plurality of auxiliary grooves each spaced from the scorelines. In a first imaginary vertical plane, a first path is formed by a first intersection between the first imaginary vertical plane and the striking face, and the auxiliary grooves have a first concentration no less than 0.17 measured between the first and second scorelines. A second imaginary vertical plane is horizontally spaced from the first imaginary plane. A second path is formed in the second imaginary vertical plane by a second intersection between the second imaginary vertical plane and the striking face. The auxiliary grooves in the second imaginary vertical plane have a second concentration that is different from the first concentration measured between the first and second scorelines.

Abstract: A golf club head includes a main body having a top portion, a bottom portion, a striking face, and an interior surface. A weight member is coupled to the interior surface of the main body. In an imaginary vertical plane that passes through the weight member, the interior surface of the main body comprises a first point and a second point. An imaginary line passes through the first point and the second point. A first imaginary boundary line and a second imaginary boundary line, both passing through the weight member and being perpendicular to the imaginary line, pass through the first point and the second point, respectively. Between the first point and the second point, the interior surface of the main body has an irregularity factor of at least 1.2 and the weight member comprises a distribution factor of at most 1.0 and a conformity factor of at most 0.07.

Abstract: A golf club head includes: a sole; a crown; a toe; a heel opposite the toe; a strike face generally bounded by a face perimeter edge, the strike face comprising a geometric center; a rear portion; and a substantially enclosed interior cavity at least partially delimited by the sole, the crown, the strike face, and the rear portion. The golf club head also includes at least one rib having a first portion secured to the strike face, having a second portion secured to the crown, and being positioned such that a location on the strike face laterally spaced toe-ward from the geometric center by no less than 0.4 in is associated with a COR value no less than 0.825.

Abstract: A computer program is disclosed for reconfiguring a property-adjustable golf club. The program receives data input corresponding to a current configuration of an adjustable feature of the golf club, and data input corresponding to trajectory adjustment information. Based on the data input, reconfiguration information is generated, and outputted, that corresponds to one of a plurality of configurations of the adjustable feature of the golf club.

Abstract: A golf club head has a main body including a top portion, a bottom portion opposite the top portion, a striking face, a rear portion opposite the striking face. The striking face has a striking face plane and a striking face outer periphery that is coplanar with the striking face plane. The striking face outer periphery has an outer periphery heel portion, an outer periphery toe portion opposite the outer periphery heel portion, an outer periphery top portion, and an outer periphery bottom portion opposite the outer periphery top portion. The striking face also has a recess extending rearward from the striking face plane, and the recess includes a recess periphery coplanar with the striking face plane. The striking face further has an insert disposed within the recess. The striking face additionally has a minimum periphery width separating the striking face outer periphery and the recess periphery. The periphery width is no greater than 1.25 mm.

Abstract: An iron-type golf club head according to one or more aspects of the present disclosure may include a striking face, a rear surface opposite the striking face, and a perimeter weighting element at least partially surrounding the rear surface. The club head may further include a resilient component associated with the perimeter-weighting element, the resilient component including a recess, and a preload spacer associated with the rear surface, a portion of the preload spacer engaging the recess. At least a portion of the resilient component is compressed between the preload spacer and the perimeter weighting element.

Abstract: A computer program is disclosed for reconfiguring a property-adjustable golf club. The program receives data input corresponding to a current configuration of an adjustable feature of the golf club, and data input corresponding to trajectory adjustment information. Based on the data input, reconfiguration information is generated, and outputted, that corresponds to one of a plurality of configurations of the adjustable feature of the golf club.

Abstract: A computer program is disclosed for reconfiguring a property-adjustable golf club. The program receives data input corresponding to a current configuration of an adjustable feature of the golf club, and data input corresponding to trajectory adjustment information. Based on the data input, reconfiguration information is generated, and outputted, that corresponds to one of a plurality of configurations of the adjustable feature of the golf club.

Abstract: A golf club includes a club head having a volume of greater than about 360 cm3 and a mass less than 200 g. A shaft attachable to the club head has a tip end, a butt end, and a shaft balance point distance, BPs, as measured from the butt end, of no more than 19 inches. And the golf club has a mass less than 300 g.