Marine speedometer

Details Marine speedometer Marine speedometer

1974-02-11

1976-06-08

Swisher, S. Clement

Measuring and testing

Navigation

Ship's log

G01C 2110

Patent

active

RE0288390

ABSTRACT:
A low drag impeller wheel mounted in an enclosure which when installed in the hull of a ship will rotate through the force of water acting upon it, and operate magnetically a pulse generating mechanism that through a current responsive instrument will indicate the speed of the vessel.

REFERENCES:
patent: 128324 (1872-06-01), Pierce
patent: 3433065 (1969-03-01), Mergler
patent: 3457782 (1969-07-01), Maeder
patent: 3496770 (1970-02-01), Fasset

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