The Yokohama Rubber Co., Ltd.

Toshinori Nishimura

Masahiko Miyamoto

Shinji Yamamoto

Hidetoshi Watanabe

Masahiko Nagahama

Hideyo Asabuki

Shinkichi Saito

Kazuo Kawada

Atsushi Onozato

Tatsuo Nishimoto

Kosei Suzuki

A golf club head is disclosed, which comprises a hollow structure composed of a face portion constituting a ball hitting face, a crown portion and a sole portion each provided successively from the face portion, and a plurality of grooves provided in the face portion. Depths of the grooves are gradually changed in accordance with a position of the face portion.

Golf club head

Disclosed is a garment which comprises front and rear body of a garment, arm holes formed in upper parts of both left and right side lines where the front and rear body of the garment are stitched together, sleeve sections fixed to the arm holes, protruded sections formed in upper parts of both side lines so as to be united with the front and rear body of the garment, where parts of the front and rear body of the garment are extended to centers of the arm holes, and slack sections formed in portions where protruded sections and parts of the sleeve sections under arms are stitched together.

Garment

Disclosed is a golf shoe which comprises spikes provided in a lower surface of a sole. Each of the spikes is composed of a spike pin provided projectingly in the lower surface of the sole and projecting catches arranged around the spike pin. The spike pin is caused to be retractable in its axial direction and pressed to be protruded more than a tip position of each of the projecting catches. Also disclosed is a spike for a golf shoe, which comprises a spike pin and projecting catches arranged around the spike pin. The spike pin is caused to be retractable in its axial direction and pressed to be protruded more than a tip position of each of the projecting catches.

Golf shoe and its spike

A metallic hollow golf club head comprising a head main body having a sole and a crown, a shaft insertion hole provided in the crown, and a hosel for supporting an end of a shaft secured to the inner surface of the sole, the top end of the hosel being kept untouched to the shaft insertion hole.

A golf bag comprises a bottomed cylindrical bag body, and a cylindrical unit provided on an upper end portion of the bag body, this cylindrical unit having as main constituent parts a plurality of skeletal members arranged circularly. The cylindrical unit is formed so that it is expanded and contracted radially at its upper portion with the lower end portions of the skeletal members used as fulcrums. Owing to this construction, damage to the club heads and the breakage of a hood by the head edges of iron type golf clubs due to the vibration occurring during the transportation of the bag can be prevented. Moreover, the withdrawing and inserting of golf clubs from and into the bag can be done more smoothly.

Golf bag with an expandable upper portion

A golf bag is provided at least on an upper region of an inner surface of a bag body with a member for guiding a shaft of a golf club when the golf club is drawn out of and inserted into the bag body.

Golf bag

When a plurality of grooves extending from the toe side to the heel side are disposed in a plurality of upper to lower rows in a face of a wood type golf club head, these grooves are disposed on the lower portion side of the face and the upper portion side of the face is slicked without disposing the grooves. This arrangement can make a flying distance of a ball greater than by conventional golf club irrespective of rain or shine. In place of the construction wherein the upper portion side of the face is slicked, it is possible to employ the construction wherein the gaps between grooves disposed on the upper portion side of the face are greater than those between grooves disposed on the lower portion side, or the construction wherein each width of grooves disposed on the upper portion side of the face is smaller than that of grooves disposed on the lower portion side.

Wood type golf club head

A golf club set consisting of a plurality of golf clubs having a series of continuous club numbers, characterized in that an angle of centroid defined as an angle described between an extension line of a face of a club head and a perpendicular passing through a center axis of a club shaft when the club shaft of each of the golf clubs is placed on a horizontal table with the club head thereof being suspended freely, is smaller for the golf clubs having higher club numbers and progressively larger in the order of decreasing club numbers among a plurality of the golf clubs.

Growing community of inventors

Hiratsuka, Japan

Toshinori Nishimura