Measuring and testing – Navigation – Ship's log
Patent
1992-06-12
1994-10-25
Chilcot, Jr., Richard E.
Measuring and testing
Navigation
Ship's log
7386112, G01C 2100, G01F 158
Patent
active
053577949
ABSTRACT:
An improved speed transducer is disclosed. The present invention provides an alternating current coil speed transducer which utilizes the Faraday Effect to generate a voltage. The present invention discloses an improved amplifying circuit that amplifies the low voltages generated by small boats such as rowing shells to permit them to register accurate speed data at low speeds, e.g. between about 0.5 and 10 m/sec although higher speeds can be measured. The present invention also provides an improved technique for connecting a speed transducer to a boat that permits the speed transducer to be mounted and dismounted and the electrical connection broken without requiring extensive reworking of the speed transducer. In this regard, the present invention generally provides an improved technique for mounting and dismounting protruding apparatus that have electrical or other connections that extend into an object. A boom for mounting the speed transducer of the present invention or other types of transducers to a watercraft at a position outside the hydrodynamic boundary layer are also disclosed.
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Chilcot Jr. Richard E.
Nielsen-Kellerman Co.
Oen William L.
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