Sumitomo Rubber Industries Limited

Sri Sports Limited

Dunlop Sports Company Limited

Roger Cleveland Golf Company, Inc.

Jeff D Brunski

Nathaniel J Radcliffe

John J Rae

Patrick A Ripp

Robert J Horacek

Dustin J Brekke

Sam G Lacey

Kevin Schaeffer

Dan S Nivanh

Michael J Wallans

Scott A Carlyle

Matthew R Daraskavich

Douglas E Roberts

Daniel J Stone

Trent E Garner

Brad S Hooley

Brian D Schielke

Craig R Schnell

Samuel G Lacey

Stephen C Chien

Mika Becktor

Phillip C Seagram

Kirk Bacon

Jay Vogler

Nick S Trahan

Keith F Dolezel

Darius Cyrulik

Michael J Kline

Adam K Sheldon

Ryan J A Ritchie

Michael T Prichard

Scott Carlyle

Jacob Lambeth

Christopher J Beck

Brian R Herr

Mark Blumenkrantz

Eli Miller

Michael J Cohen

Rory C Stewart

Mitchell Samson

James R Harris

Brian Herr

A correlated set of golf club heads comprises a first and second golf club head. Each club head has a striking face, a rear surface, a top portion, a sole portion, a toe portion, a heel portion, and a loft. The striking face has a first plurality of scorelines defining a scoreline heel-ward extent and a scoreline toe-ward extent. The plurality of scorelines comprises a scoreline length LS1 being the lateral distance between the heel-ward extent and the toe-ward extent. The loft of the second golf club head is greater than that of the first golf club head. The scoreline length LS2 of the second golf club head differs from that of the first scoreline length LS1.

Golf club head with textured striking face

A putter-type golf club head is disclosed. When oriented in a reference position, the putter-type golf club head comprises a blade member and a central elongate member in communication with, and extending rearwardly from, the blade member. The blade member extends in a heel-to-toe direction and has a striking wall defining a substantially planar striking surface, and an upper surface of the central elongate member comprises at least one generally square-shaped alignment element.

Putter-type golf club head

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 μin and about 180 μin. 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.

A method of selecting a golf club head for a specific user, includes: (a) receiving first data comprising impact location of each of a plurality of golf swings taken by the user using a test golf club; (b) generating an impact probability map specific to the user; (c) providing second data comprising correlations between striking face location and coefficient of restitution (COR) for each of a plurality of golf clubs; (d) calculating a user-specific expected COR value for each of the plurality of golf clubs based on the first data, the impact probability map, and the second data for each of the plurality of golf clubs; and (e) outputting and displaying golf club preference information based on the calculated user-specific expected COR.

Performance-based golf club selection system and method

A method of manufacturing a golf club head includes: providing an intermediate golf club head body; prescribing a scoreline length value based on at least a first final spatial attribute of the intermediate golf club head; and texturing a first region of the striking face to exhibit a first average surface roughness Raof greater than 180 &#x3bc;in by surface milling in a first pass to form a plurality of arcuate micro-grooves each having a radius of curvature selected based on at least a second final spatial attribute of the intermediate golf club head. The method further includes texturing a second region of the striking face to exhibit a second average surface roughness Rathat is less than Ra, and it includes forming a plurality of scorelines in the striking face, the plurality of scorelines defining a scoreline length LS substantially equal to the prescribed scoreline length value.

A golf club includes a club head having a volume of greater than about 360 cmand 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, BP, as measured from the butt end, of no more than 19 inches. And the golf club has a mass less than 300 g.

Golf club

A system may comprise one or more monitoring devices that may communicate with a mobile device or a wearable device worn by a user of a sporting apparatus. The system may enable motion data specific to motion of the sporting apparatus to be conveniently captured and transmitted, and displayed on the wearable device. The system may include functionality to permit disablement of the motion detecting, transmission, and/or displaying functions at times when such functions are not permitted to be used, and to record the date, time, and location when such functions have been disabled to permit verification thereof by a governing body or sporting organization. The system may further include a learning module enabling monitored motion of the object to be correlated to monitored motion of the user such that predictive motion of the sporting object based only on monitored motion of the user may be obtained and displayed.

System, method, and apparatus for monitoring sporting apparatus and users thereof

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.

Golf club head

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 &#x3bc;in and about 180 &#x3bc;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.

A golf club head comprises a loft angle no less than 18&#xb0;, a striking face, a sole portion, and a top portion having an exterior surface. In an imaginary vertical plane spaced from a face center by no more than 10 mm and perpendicular to an imaginary striking face plane, an imaginary line segment has a length of 25 mm, a first endpoint located in the imaginary striking face plane, a second endpoint located above the exterior surface, and forms an angle &#x3b8; with the striking face plane between 55&#xb0; and 65&#xb0;. The line segment is tangent to the exterior surface at a first point. A second point is located on the imaginary line segment and spaced from the first point by no less than 1 mm. The second point is spaced from the exterior surface by a gap distance that is no greater than 0.15 mm.

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. Using the computing device, the method comprises receiving from the one or more sensors swing data relating to a swing of the reference golf club, analyzing the swing data to determine recommended shaft parameter values for each of a plurality of shaft parameters using an algorithm, accessing a shaft database comprising actual shaft parameter values for each of the plurality of shaft parameters for each of a plurality of shafts, determining at least one shaft from the plurality of shafts based, at least in part, on a comparison between the recommended shaft parameter values and the actual shaft parameter values, transmitting information relating to the at least one shaft; and displaying the information on a display of the computing device.

Method, system, and apparatus for analyzing a sporting apparatus

Growing community of inventors

Los Angeles, CA, United States of America

Jeff D Brunski