发明名称 |
Vessel speed detecting device |
摘要 |
A number of embodiments of watercraft speed detecting devices embodying a dynamic semiconductor pressure sensor that has high accuracies at most speed ranges and another speed sensor that has a higher degree of accuracy than the semiconductor pressure sensor at a certain range and that speed is displayed at that certain range. The other speed sensor may be of a wide variety of types such as a magnetic current meter, a propeller type speed sensor, or a tachometer that is driven by the engine and associated circuitry for calculating watercraft speed from engine speed.
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申请公布号 |
US4914945(A) |
申请公布日期 |
1990.04.10 |
申请号 |
US19880257765 |
申请日期 |
1988.10.14 |
申请人 |
SANSHIN KOGYO KABUSHIKI KAISHA |
发明人 |
NAKAMURA, KAZUHIRO;YOSHIOKA, TATSUYA;SAWADA, RYOJI;NAKAMURA, TOMOJI |
分类号 |
G01P5/00;G01P5/02;G01P5/14 |
主分类号 |
G01P5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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