Apparatus for timing aquatic craft for water skiing competition

Details Apparatus for timing aquatic craft for water skiing competition Apparatus for timing aquatic craft for water skiing competition

1992-07-20

1993-12-21

Strecker, Gerard R.

Electricity: measuring and testing

Electrical speed measuring

Including 'event' sensing means

73490, G01P 366

Patent

active

052724352

ABSTRACT:
Apparatus and method for accurately timing speed of aquatic vehicles, particularly for water skiing competition and the like. Floating magnetic generating transmitters are placed under one or more linearly aligned buoys configured to accommodate an aquatic vehicle's path. Water-tight detection means is placed on the aquatic vehicle for receiving a series of signals which are induced when the vehicle cuts through the magnetic field produced at a plurality of such buoys. The signals, responsive to the vehicle speed, are amplified and extraneous high frequencies attenuated, and speed or course traverse time calculated and displayed.

REFERENCES:
patent: 4316253 (1982-02-01), Posseme
patent: 4470013 (1984-09-01), Posseme
patent: 4788498 (1988-11-01), Uemura
patent: 4935697 (1990-06-01), Paesch et al.
patent: 4943772 (1990-07-01), Maupu et al.
patent: 5136621 (1992-08-01), Mitchell et al.

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