Device for determining swing speed of rotatable implements

Details Device for determining swing speed of rotatable implements Device for determining swing speed of rotatable implements

1987-07-24

1989-04-11

Smith, Leonard E.

Vehicle fenders

Buffer or bumper type

Plural impact bars vertically spaced in impact plane

273 26B, 73381, 73380, A63B 6900, A63B 6936, G01L 506

Patent

active

048199419

ABSTRACT:
A device for determining swing speed of a rotatable sporting goods implement, for example human activated sporting goods i.e. a baseball bat or a golf club, wherein practice swings are undertaken seriatim. The device is comprised of a base mounted support for a rotatable screw shaft, an adjustor that is threadedly engaged with said screw shaft to enable its segmental rotation when the screw shaft is rotated, a movable member swingingly supported to the base and connected via a spring to the adjustor, which enables determination of the maximum swing speed by the tension of the spring that connects the adjustor and the movable member, causing movement of the movable member by induced centrifugal force at the time of swinging. There is also a stopper upon which the movable member may impinge to thus produce a hitting sound.

REFERENCES:
patent: 1492039 (1924-04-01), Leven
patent: 2501277 (1950-03-01), Hollopeter
patent: 2630012 (1953-03-01), Walker
patent: 2772887 (1956-12-01), Blake
patent: 3113781 (1963-12-01), Guier
patent: 3136546 (1964-06-01), Connolly
patent: 3172668 (1965-03-01), Blake
patent: 3753564 (1973-08-01), Brandell
patent: 3848873 (1974-11-01), Linning
patent: 4027535 (1977-06-01), Swanson

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