Sumitomo Rubber Industries Limited

Dunlop Sports Company Limited

Joseph Chen

Dustin J Brekke

Phillip C Seagram

Jake Grenier

Mika Becktor

Keith F Dolezel

Dan S Nivanh

Mitch Samson

Michael Boyle

Bryce Weir

Jacob Lambeth

Darius Cyrulik

Jimmy H Kuan

Alexandra Agrella

Anthony Munson

Golf club head

A golf club head includes a center of gravity spaced less than 5 mm from a vertical center plane that is perpendicular to a striking face plane and extends through a striking face center. The golf club head also includes a first component having a first melting point and a first density and a second component having a second melting point higher than the first melting point and a second density less than the first density. And the second component (i) is at least partially encapsulated by the first component, (ii) extends into a hosel portion below a hosel bore, and (iii) has a mass less than about 5 g.

A golf club head includes a loft no less than 40 degrees; a striking face; a virtual center plane that is vertical and perpendicular to a virtual striking face plane and includes a face center; a rear face; and a recess. The recess extends in a heel-to-toe direction along an upper sole surface and has a depth that varies in the heel-to-toe direction such that a first depth corresponds with a first location heel-ward of the face center and a second depth corresponds with a second location toe-ward of the face center, the first depth being no less than 10 mm and greater than the second depth by at least 5 mm. An insert is received in the recess. And a center of gravity of the golf club head is spaced no greater than 5.0 mm from the virtual center plane measured in the heel-to-toe direction.

A hollow-type golf club head, when oriented in a reference position, includes: a striking wall; a sole portion; a top portion having an exterior surface and an interior surface; a hosel extending from the top portion and defining a hosel axis; and a plurality of external ribs located on the exterior surface of the top portion. The plurality of external ribs are each generally elongate in a front-to-rear direction, and at least one internal rib is located on the interior surface of the top portion and is generally elongate in the front-to-rear direction. The at least one internal rib is spaced from the plurality of external ribs by a distance Dno less than 2 mm as considered in top view of the club head.

Golf club head with external and internal ribs

A putter-type golf club head has a main body and a face component including a first element formed of a resilient material. The putter-type golf club head also has a second element forward of the first element and including a rigid material. The second element is secured directly to the first element. The first element has a thickness that gradually increases toward a sole portion of the club head.

Growing community of inventors

Costa Mesa, CA, United States of America

Joseph Chen