Bowling pin with sound controlling means

Claim 1

A BOWLING PIN ADAPTED TO PROVIDE A SOUND SUBSTANTIALLY SIMILAR TO A CONVENTIONAL MAPLE WOOD PIN ON IMPACT WITH A BOWLING BALL OR ANOTHER PIN COMPRISING: A HOLLOW METALLIC CORE, SAID CORE HAVING THE ELONGATED SHAPE OF A BOWLING PIN WITH A NECK-HEAD PORTION, A BELLY PORTION AND A BASE PORTION, SAID CORE FURTHER HAVING SOUND DETERMINING MODES OF VIBRATION, ONE BEING A BELL MODE CAUSED PRINCIPALLY BY VIBRATION OF THE BELLY OF SAID PIN AND THE OTHER BEING A FLEXURAL MODE CAUSED PRINCIPALLY BY THE NECK-HEAD AND BASE MOVING IN A COMMON PHASE AND THE BELLY MOVING IN OPPOSITE PHASE, SAID BELL MODE BEING UNDESIRABLE IN THAT AUDIBLY IT SOUNDS HARSH AND UNWOODEN WHILE SAID FLEXURAL MODE IS DESIRABLE IN THAT IT SOUNDS NOT UNLIKE A MAPLE WOOD PIN WHICH HAS A SIMILAR FLEXURAL MODE; A MASS POSITIONED ECCENTRICALLY WITHIN SAID HOLLOW CORE IN THE BELLY AREA ADAPTED TO BREAK UP THE SYMMETRY OF VIBRATION OF SAID BELL MODE TO QUICKLY DISSIPATE THE SOUND THEREOF WITHOUT ADVERSELY AFFECTING THE DESIRABLE VIBRATION OF SAID FLEXURAL MODE; SAID BELLY AREA BEING DEVOID OF OTHER MASSES TENDING TO COMPENSATE FOR THE ECCENTRICALLY POSITIONED MASS; AND A RESILIENT PLASTIC COATING ENCASING SAID CORE.