| Patent Number |
Title Of Patent |
Date Issued |
| 6226416 |
Apparatus and method for measuring rotation quantity of spherical object |
May 1, 2001 |
| The invention relates to an apparatus and a method for measuring rotation quantity of a spherical object. A recording device photographs and records a rotating spherical object from one definite direction as a plurality of stationary circular images at definite intervals. An instrumentat |
| 5631558 |
Apparatus and method for measuring velocity and instantaneous spatial position of spherical obje |
May 20, 1997 |
| An apparatus and a method for simultaneously measuring velocity and an instantaneous spatial position of a spherical object. A first group of sensors and a second ground of sensors are arranged at known positions at intervals each less than the radius of the spherical object. The times |
| 5614823 |
Apparatus and method for measuring head speed and opening angle using six sensors arranged in a |
March 25, 1997 |
| An apparatus and a method for measuring head speed and an opening angle. At least four sensors are disposed at each vertex of a defined rectangle. An instrumentation device measures differences in time between instants in which a moving head intercepts rays of light toward the sensors, |
| 5338039 |
Golf ball |
August 16, 1994 |
| A golf ball having a plurality of dimples on a surface thereof characterized in that more than 40% of all dimples are polygonal in shape and have a double slope in section having a straight first slope and a straight second slope continued radially inwardly from the first slope, and |
