PUTTER WITH DISTANCE MEASURING FUNCTION

WIPO Patent Application WO/2004/105892

A1

A logical putter not based on a conventional experiential rule but based on measurement data. A distance-to-cup measuring rule is such that grip end face of the putter is aligned with the height of eyes and then the putter is suspended right above a ball while stretching the arms. When a cup is looked under that state, distance from a position where the line of sight intersects the grip part to the cup is determined. Since the measurement of distance depends upon the individual height, height of a player is preset by an electronic circuit contained in the grip part and a microcomputer calculates a distance count up to the cup by judging and inputting the intersecting position of the line of sight through sequential lighting of LEDs arranged in series. Furthermore, a putting operation is regarded as pendulum operation integrating the arm and the putter and then a recommended take-club-back amount is determined theoretically for the distance count of a rolling ball and delivered to a liquid crystal display along with the distance count. Since the measured distance count and the recommended take-club-back amount depend significantly on the inclination angle of a green surface, an inclination angle sensor is built in the vicinity of the center of the putter head, and distance count and take-back amount determined previously are corrected automatically based on an angle measured by laying the putter.

KOIWAI HIDEAKI (JP)

PCT/JP2004/003501

December 09, 2004

March 16, 2004

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KOIWAI HIDEAKI (JP)

A63B69/36; G01C3/10; A63B57/00; A63B71/06; (IPC1-7): A63B53/00; G01C3/10; G01C9/10

JPH03242161A	1991-10-29
JPH09313652A	1997-12-09
JPH07289668A	1995-11-07
JP2001286590A	2001-10-16
JPS54153966U	1979-10-26

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