Sri Sports Limited

Sumitomo Rubber Industries Limited

Roger Cleveland Golf Company, Inc.

Samuel G Lacey

Nathaniel J Radcliffe

Jeff D Brunski

Dan S Nivanh

Dustin J Brekke

Matthew R Daraskavich

Brian D Schielke

Jimmy H Kuan

John J Rae

Robert J Horacek

Ryan J A Ritchie

Michael J Wallans

Mark Blumenkrantz

Rory C Stewart

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 striking face having a face center, a bottom portion, a top portion including an exterior surface, a hosel including an imaginary vertical hosel plane, a forwardmost point, and a rearwardmost point. In an imaginary vertical plane perpendicular to the hosel plane and passing through the face center, the exterior surface includes a path having a first point and a second point rearward of the first point. An imaginary infinite straight line passes through the first point and the second point, but does not penetrate the exterior surface. A segment of the imaginary straight line is delimited by the first point and the second point. A maximum distance between the segment and the exterior surface of the top portion is no greater than 0.70 mm and a distance between the first point and the second point is no less than 22 mm.

Golf club head

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.

A golf club according to one or more aspects of the present invention may have a mass less than 300 g, a length greater than about 45 inches, a swing weight between D0 and D6, a head weighing less than about 200 g, a club-head volume of at least about 360 cm, a grip weighing less than about 50 g, and a shaft having a tip end, a butt end, and a shaft balance point located no more than 24 inches from the butt end. The shaft may have a torsional displacement angle greater than about 5.5&#xb0; and a mass less than about 50 g. A coordinate system having x-, y-, and z-axes may have its origin at the center of gravity of the club head. The golf club head may have a moment of inertia of at least about 4500 g&#xb7;cmabout the z-axis and a moment of inertia of at least about 3000 g&#xb7;cmabout the y-axis.

A golf club according to one or more aspects of the present invention may have a mass less than 300 g, a length greater than about 45 inches, a swing weight between Dand D, a head weighing less than about 200 g, a club-head volume of at least about 360 cm, a grip weighing less than about 50 g, and a shaft having a tip end, a butt end, and a shaft balance point located no more than 24 inches from the butt end. The shaft may have a torsional displacement angle greater than about 5.5&#xb0; and a mass less than about 50 g. A coordinate system having x-, y-, and z-axes may have its origin at the center of gravity of the club head. The golf club head may have a moment of inertia of at least about 4500 g&#xb7;cmabout the z-axis and a moment of inertia of at least about 3000 g&#xb7;cmabout the y-axis.

Growing community of inventors

Huntington Beach, CA, United States of America

Samuel G Lacey