Measuring and testing – Frictional resistance – coefficient or characteristics
Reexamination Certificate
2011-08-02
2011-08-02
Williams, Hezron (Department: 2856)
Measuring and testing
Frictional resistance, coefficient or characteristics
C473S404000
Reexamination Certificate
active
07987693
ABSTRACT:
Method and apparatus for measuring the coefficient of rolling friction or speed of a horizontal surface over which a round object is rolled such as a putting green encountered in the game of golf. The method includes a device for launching a ball across the surface at a constant and consistent velocity. An included timing device is triggered to start counting the elapsed time when the ball exits the launching device and continues counting until the ball has decelerated to a stop. At the instant the ball ceases moving the timer is triggered to terminate the count. The time required for a body with a specific velocity to come to rest after experiencing constant deceleration is determined by the laws of motion. The coefficient of friction or “speed” of the green which is proportional to the amount of deceleration may then be calculated. This time measurement is therefore sufficient to determine the speed of the green surface which may be reported as an equivalent “stimp” value.
REFERENCES:
patent: 3215436 (1965-11-01), Carter
patent: 5067718 (1991-11-01), Knox
patent: 5788583 (1998-08-01), Agulnek
patent: 6547680 (2003-04-01), Marchese, Jr.
patent: 6749526 (2004-06-01), Hughes
patent: 6749527 (2004-06-01), Hughes
patent: 6860139 (2005-03-01), Pelz
patent: 6872150 (2005-03-01), Welch
patent: 7220187 (2007-05-01), Schmidt
patent: 7225663 (2007-06-01), Pelz
patent: 7255649 (2007-08-01), McConnell
patent: 7306524 (2007-12-01), Rogers
patent: 2003/0226393 (2003-12-01), Pelz
patent: 2004/0058754 (2004-03-01), Hughes
patent: 2004/0097303 (2004-05-01), Hughes
patent: 2005/0145011 (2005-07-01), Pelz
patent: 2006/0287119 (2006-12-01), Penner et al.
Fry Eric
Fry Steven
Kolb Nathaniel
Williams Hezron
LandOfFree
Method and device for automated electronic green speed... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for automated electronic green speed..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for automated electronic green speed... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2731945