Devices and methods for improving bowling skills

Details Devices and methods for improving bowling skills Devices and methods for improving bowling skills

1980-09-30

1982-05-18

Hum, Vance Y.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

A63B 7106

Patent

active

043301231

ABSTRACT:
Devices for assisting persons in developing and/or improving manual skills such as bowling, which devices comprise apparatus for attaching the device to a user's arm; a first sensor which makes or breaks an electrical circuit; a second sensor which makes or breaks an electrical circuit; an electrical power source; and an annunciator, wherein the first sensor makes a circuit when a first condition is sensed and the second sensor makes a circuit when a selected attitude is sensed, the circuit being made by the second sensor only after the first sensor makes the circuit, and the circuit activating the annunciator, together with methods for teaching proper follow-through using such devices.

REFERENCES:
patent: 2064603 (1936-12-01), Harrison
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patent: 2834597 (1958-05-01), Ylinen
patent: 2994533 (1961-08-01), Pupilla
patent: 3206600 (1965-09-01), Butan
patent: 3301559 (1967-01-01), Jolley
patent: 3350100 (1967-10-01), Carmines
patent: 3362023 (1968-01-01), McMahon
patent: 3383772 (1968-05-01), Gardner et al.
patent: 3649013 (1972-03-01), Foster
patent: 3717857 (1973-02-01), Evans
patent: 3788647 (1974-01-01), Evans
patent: 4059267 (1977-11-01), Noble
Howard M. Berlin, "555 Timer Applications Source Book with Experiments", p. 108, Figure 9-10.

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