Patent application number | Description | Published |
20090258726 | GOLF CLUB HEAD | 10-15-2009 |
20100029408 | GOLF CLUB HEAD | 02-04-2010 |
20100317458 | GOLF CLUB HEAD - A golf club head includes a face line | 12-16-2010 |
20110105240 | GOLF CLUB SET - Groove depths D | 05-05-2011 |
20120108359 | GOLF CLUB - A golf club has a reverse flex of from 90 to 140 mm. In a front view of the golf club head under a standard state in which the golf club head is placed on a horizontal plane at its lie angle and loft angle, a first straight line drawn to pass through the centroid of the toe-crown-side thin portion and the centroid of the back surface of the face portion is inclined at an angle θA of from 30 to 40 degrees with respect to the horizontal plane; and a second straight line drawn to pass through the centroid of the heel-sole-side thin portion and the centroid of the back surface of the face portion is inclined at an angle θB of from 39 to 42 degrees with respect to the horizontal plane. | 05-03-2012 |
20120165117 | GOLF CLUB - A golf club has a reverse flex of 110 to 160 mm. The face portion includes a central thick part, a toe-crown-side thin part on a crown-side and on a toe-side of the central thick part, and a heel-sole-side thin part on a sole-side and on a heel-side of the central thick part. In the front view of the head, a first straight line passing an area centroid of the toe-crown-side thin part and an area centroid of a back surface of the face portion has an angle θA of 10 to 30 degrees, and a second straight line passing an area centroid of the heel-sole-side thin part and the area centroid of the back surface of the face portion has an angle θB of 36 to 40 degrees, each with respect to the horizontal plane. | 06-28-2012 |
20140038745 | GOLF CLUB HEAD - A hollow golf club head comprises a face and a face peripheral portion extending rearward from the face, the face periphery portion provided with a toe-side reduced-rigidity portion and a heel-side reduced-rigidity portion consisting of a concave portion or a slit, wherein under a standard state, the toe-side portion has a center point of length located higher and at the toe side than a face centroid, wherein an angle of a first straight line passing through the face centroid and the center point P | 02-06-2014 |
20150045143 | GOLF CLUB HEAD AND METHOD FOR MANUFACTURING SAME - A golf club head has a hollow therein and a head volume of not less than 350 cc. The head comprises a head main body and a substantially cup-shaped face member which are united with each other. The face member integrally includes a face portion having a club face for hitting a ball, and a turnback extending backwardly of the head from a peripheral edge of the club face. The inner surface of the face member is provided with a groove extending along the boundary of the turnback with the face portion. The face member is a press-formed part whose turnback is bent by press working. | 02-12-2015 |
20150045144 | GOLF CLUB HEAD AND METHOD FOR MANUFACTURING SAME - A golf club head has a hollow therein and a head volume of not less than 100 cc and less than 350 cc. The head comprises a head main body and a substantially cup-shaped face member which are united with each other. The face member integrally includes a face portion having a club face for hitting a ball, and a turnback extending backwardly of the head from a peripheral edge of the club face. The inner surface of the face member is provided with a groove extending along the boundary of the turnback with the face portion. The face member is a press-formed part whose turnback is bent by press working. | 02-12-2015 |
20150045147 | GOLF CLUB HEAD - A hollow golf club head has a crown portion extending from a face portion and configured so as to generate good ball hitting sound. The crown portion is provided with a first region having a first thickness, a second region having a second thickness and a third region having a third thickness, wherein the third thickness is less than the second thickness which is less than the first thickness. The first region is disposed in a face portion side of the crown portion and extending in the toe-heel direction. The third region is disposed backward of the first region. The second region surrounds the third region. | 02-12-2015 |