Measuring and testing – Navigation – Ship's log
Patent
1988-03-01
1989-04-18
Levy, Stewart J.
Measuring and testing
Navigation
Ship's log
G01C 2110
Patent
active
048215678
ABSTRACT:
An improved running speed detecting device for a watercraft wherein the speed signal is derived from a water pressure signal. The water pressure signal is transmitted to a voltage signal at different amplification factors at different running speeds so as to provide a greater degree of accuracy throughput the watercraft speed ranges.
REFERENCES:
patent: 1869974 (1932-08-01), Masters
patent: 2627181 (1953-02-01), Kiekhaefer
patent: 3210995 (1965-10-01), Kiekhaefer
patent: 4205552 (1980-06-01), Refoy
patent: 4694694 (1987-09-01), Vlakanicic et al.
Nakamura Kazuhiro
Nakamura Tomoji
Sawada Ryoji
Beutler Ernest A.
Levy Stewart J.
Roskos Joseph W.
Sanshin Kogyo Kabushiki Kaisha
Yamaha Hatsudoki Kabushiki Kaisha
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