Mizuno Corporation

Mizuno Usa, Inc.

Mizuno Technics Corporation

Kei Tsuji

David Gregory Llewellyn

Arata Kamo

Takayuki Mine

Kazuhiro Doi

Koji Sakai

Kazuya Ishida

Mamoru Saraie

Tetsuya Kanayama

Takashi Kimura

Mototaka Iwata

Norikazu Ninomiya

Chris Voshall

Hiroshi Nagao

Yasuyuki Ohta

Kensuke Maenaka

Noriyuki Tabuchi

Daisuke Hosooka

Yukihiro Teranishi

Yudai Washida

Naoya Joichi

Kanta Shimotaka

Tetsuya Oono

Tatsuya Wakako

A golf club head includes a face section, a crown section, a sole section, a heel section, and a toe section. A hollow section separated from the outside is formed inside the golf club head. The face section includes, on a back surface, a first thick section, a second thick section and a thin section thinner than the first thick section and the second thick section and disposed so as to surround the entire periphery of the first thick section and the entire periphery of the second thick section. The first thick section has a first portion disposed at the center in both the toe, and a second portion protruding from a part at the center of the first portion in the longitudinal direction toward the crown section.

Golf club head

A golf club head can comprise a hollow body comprising a shell defining at least some of an exterior surface of the golf club head, and the hollow body can include a ball-striking face, a crown, a hosel, a sole, and a rear end opposite the ball-striking face. A recess can be located on the sole and can extend toward an interior of the hollow body. An opening can be located within the recess and can be defined by one or more sidewalls. A weighted insert can insert into the recess and the opening and can comprise a first end, a second end, and a middle portion disposed therebetween. The first end can extend outwardly from the middle portion in a toe-to-heel direction and the second end can extend outwardly from the middle portion in a heel-to-toe direction. A weight can be disposed within the weighted insert.

Golf club head with sole side features

A golf club head of the wood-type, including a body having a ball-striking face and a sole, is disclosed. The sole can include a wave slot for adding additional weight to the golf club head and for providing improved performance. The wave slot can include a front sidewall, a rear sidewall, and at least two waves. The waves can be positioned between the front and rear sidewalls and can each include a valley portion at the lowest point of the wave such that the valley portion does not protrude below the sole.

Wave sole for a golf club head

A golf club head includes a main body and a weight attached to and detached from the main body. The main body includes a face having a ball striking face, and a sole having a sole surface brought into contact with the ground when striking a ball. The sole has formed thereon a first guide track recessed with respect to the sole surface and having a longitudinal direction and a lateral direction in a plan view. The weight is fixed inside the first guide track. The first guide track includes an attachment/detachment region in which the weight is attached/detached, and a first fixing region and a second fixing region in which the weight is moved in the longitudinal direction and fixed. The first fixing region and the second fixing region are disposed to be contiguous to the attachment/detachment region in the longitudinal direction and sandwich the attachment/detachment region.

Golf club head and golf club

A golf club head of the wood-type, including a body having a ball-striking face and a sole, is disclosed. The sole can include a wave slot for adding additional weight to the golf club head and for providing improved performance. The wave slot can include a front sidewall, a rear sidewall, and at least two waves. The wave slot can be open-ended. The waves can be positioned between the front and rear sidewalls and can each include a valley portion at the lowest point of the wave such that the valley portion does not protrude below the sole. The wave slot can also have two, three, or more waves, which can have heights that decrease as the position of the waves increases with respect to the ball-striking face.

A golf ball includes a land portion, and a plurality of dimples configured to be recessed from the land portion. Each of the plurality of dimples includes a circular bottom face, a circular opening configured to have a larger diameter than the bottom face, and a side face configured to connect the bottom face and the opening. The side face is configured to be linearly inclined so that the diameter of each of the plurality of dimples increases from the bottom face toward the opening. The diameter of the bottom face is 0.45 mm or more and 0.60 mm or less.

Golf ball

A golf club head includes a face, a sole, and a weight member. The sole includes a guide groove having a plurality of positioning grooves. The weight member includes a plurality of protrusions, and is positioned in the guide groove with the plurality of protrusions engaging with the plurality of positioning grooves. The plurality of positioning grooves each include a pair of sidewalls formed in an arc shape and a bottom connecting the sidewalls to each other. The plurality of protrusions each include a pair of side surfaces formed in an arc shape and a ridge connecting the side surfaces to each other.

An adjustable golf club head and weight structure is disclosed. The adjustable golf club head can include a crown, a toe, a hosel, and a sole. The sole of the club head may have one or more tracks located thereon. Each of the one or more tracks can have one or more weights secured therein. Each of the one or more weights can include an upper weight portion, and a lower weight portion. A screw can be positioned to adjoin the upper weight portion and the lower weight portion. The weight can also include a clip fastened to the screw such that the clip retains the screw within bores located in the upper and lower weight portions. In order to prevent the upper and lower weight portions from rotating with respect to one another, the weight can include an alignment portion and an alignment receptacle.

Adjustable metal wood golf club head with moveable weight structure

An adjustable golf club is disclosed. The adjustable golf club can include a club head having a sole. The sole of the club head may have two or more tracks located thereon. Each track can be configured to receive at least one weight. The two or more tracks may be three tracks. The three tracks can comprise an elongated central track, a first short track disposed on a first side of the elongated central track, and a second short track disposed on the second side of the elongated central track.

Multi-track adjustable golf club

An iron golf club head includes: a head portion; and a badge portion adhered to the head portion. The head portion includes: a face surface; and a back surface located behind the face surface. The badge portion is adhered to at least one of a first largest amplitude region where an amplitude in a fourth-order vibration mode of the back surface is the largest and a second largest amplitude region where an amplitude in a fifth-order vibration mode of the back surface is the largest. As a result, there can be obtained an iron golf club head and an iron golf club, in which by suppressing decrease in resonant time of the hitting sound and reducing the sound pressure of the hitting sound, the hitting sound and the hitting feeling can be improved.

Iron golf club head and iron golf club

Hybrid golf club head

A golf club head ( ) has an ellipsoid of inertia ( ) with its center at a center of gravity G. When the ellipsoid of inertia ( ) is virtually cut with a plane passing through the center of gravity of the golf club head ( ) and being parallel to a face surface ( ), a major axis of a plane ellipse ( ) appearing on its cut surface forms an angle of &thgr; with an intersecting line ( ) of the cut surface and a ground surface ( ). The major axis extends upward and away from the ground surface ( ) as it approaches a toe part ( ). The angle &thgr; is not smaller than 0.5&deg; and not larger than 9.5&deg;. An aspect ratio a/b defined by a ratio of the length a of the major axis ( ) to the length b of a minor axis ( ) of the plane ellipse ( ) is not smaller than 1 and not larger than 4.

Growing community of inventors

Osaka, Japan

Kei Tsuji