Measuring and testing – Vibration – Sensing apparatus
Patent
1993-12-06
1998-08-18
Chapman, John E.
Measuring and testing
Vibration
Sensing apparatus
73579, 200 6151, 473461, G01H 1300
Patent
active
057960054
ABSTRACT:
A combination of an implement employed in a sports game to impact with a body, and a device coupled to the implement which measures the natural frequency and the relative amplitude of vibration of the implement resulting from the impact. The implement can be a game racket, bat, club or the like and the body impacted can be a ball. The lower the value of the natural frequency of vibration of the implement the more flexible the implement is when it impacts the ball, the greater is the amplitude of the vibration of the implement and the rebound of the ball has a lower velocity. One of the embodiments, called a FLEX METER is a frequency measuring device which employs a series of reeds mounted on a base member each reed being adjusted to vibrate at a maximum amplitude when a vibration having a designated frequency is applied to the base member. Each reed is identified with a designated frequency. A light emitting diode associated with each reed emits light when a reed responsive to the vibration of the implement has an amplitude sufficient to make an electrical connection to a closely positioned contact. The devices are all small in weight, size and are portable and convenient to use with the implement.
REFERENCES:
patent: 2219803 (1940-10-01), Bourne
patent: 2496295 (1950-02-01), Langer
patent: 2900817 (1959-08-01), Grindle et al.
patent: 3007111 (1961-10-01), Umile et al.
patent: 3889525 (1975-06-01), Bailey
patent: 4279159 (1981-07-01), Powell et al.
patent: 4291574 (1981-09-01), Frolow
patent: 4599898 (1986-07-01), Beer
patent: 4928965 (1990-05-01), Yamaguchi et al.
patent: 5001933 (1991-03-01), Brand
patent: 5007294 (1991-04-01), Matjasic
patent: 5022651 (1991-06-01), Barone
patent: 5040279 (1991-08-01), Braly
patent: 5060524 (1991-10-01), Artola
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