Apparatus and method for determining the center of percussion ("

Details Apparatus and method for determining the center of percussion (" Apparatus and method for determining the center of percussion ("

1992-04-21

1993-12-14

Woodiel, Donald O.

Measuring and testing

Center of gravity; turning moment; metacentric height

Ball driving sporting implement

73 6501, A63B 5300

Patent

active

052691772

ABSTRACT:
Apparatus and method is provided for determining the subjective sweet spot of a baseball bat, softball bat or other object of percussion. The subjective sweet spot is determined by first measuring the period of oscillation of the baseball bat or other object of percussion through an angular displacement of five degrees or less. Thereafter, a particular formula is utilized for determining the subjective sweet spot and the sweet spot is marked on the baseball bat for use by the hitter. The principles of this invention may be utilized on other objects of percussion such as softball bats, golf clubs and the like.

REFERENCES:
patent: 3785197 (1974-01-01), Finn
patent: 4203598 (1980-05-01), Stuff et al.
patent: 4674324 (1987-06-01), Benoit
patent: 4834370 (1989-05-01), Noble et al.
patent: 4921574 (1981-09-01), Frolow
Beiser, Arthur, Physics, The Benjamin/Cummings Publishing Co., Inc., Menlo Park, Calif., 1973, ISBN 0-8466-0521-9 (pp. 274-276).
Serway, Raymond A., Physics for Scientists and Engineers With Modern Physics, Saunders College Publishing, Philadelphia, Pa., Third edition, 1986, ISBN 0-03-031353-8 (pp. 337-338).
Brochure excerpts pp. 34-36 of Pasco Scientific.

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