Dunlop Sports Company Limited

Sri Sports Limited

Sumitomo Rubber Industries Limited

Matthew R Daraskavich

Jeffrey D Brunski

Sharon J Park

Roberto Aguayo

Nathaniel J Radcliffe

Dustin J Brekke

Keith F Dolezel

Jeff D Brunski

Ryan J A Ritchie

Darius Cyrulik

Patrick A Ripp

Brian D Schielke

Samuel G Lacey

Michael T Prichard

Michael J Cohen

Nick S Trahan

James R Harris

James H Harris

Dan S Nivanh

Christopher R Cooper

Dariusz Cyrulik

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 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 micro-grooves each having an average depth no greater than about 0.010 mm, and a plurality of textured surface treatment regions superimposed on the micro-grooves so as to at least partially intersect the micro-grooves.

Golf club head and manufacturing method for same

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.

Golf club head

Golf club head with textured striking face

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.

Shaft fitting system

A golf club head has a main body and a front recess that includes a flange. A rear portion of the main body includes a perimeter-weighting element. A striking face insert is secured within the front recess. A face center is located on the front surface of the striking face insert. A rear cavity is at least partially delimited by the perimeter-weighting element and a rear surface of the striking face insert. A rear insert is secured to the rear surface of the striking face insert. In an imaginary horizontal plane passing through a portion of the rear insert, proximate a heel portion of the club head, a heelwardmost point of the rear insert is spaced further from a vertical center plane than a minimum distance between the flange and the center plane. The club head comprises an auxiliary recess that extends outward from the rear cavity.

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.

A system for fitting golf clubs to golfers that enables an overall club length to be varied without varying a length of a shaft. The system enables a greater number of combinations of club characteristics, such as shaft flex, brand, and length, to be contained within a club fitting cart and/or for a same number of combinations of club characteristics to be contained within a smaller cart.

Systems and methods for fitting golf clubs

Growing community of inventors

Huntington Beach, CA, United States of America

Matthew R Daraskavich