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Combined marine instrument and display therefor
| Details |
Inventors: Overs, Ronald R.;
Assignee:
Primary Examiner: Woodiel; Donald O.
Assistant Examiner:
Attorney, Agent or Firm: Jaffe; Allen J.
A combined knotmeter, distance/log meter and depth meter including a meter housing, a dial face having indicia symmetrically centered thereabout, an analog speed indicator having a pointer for cooperating with the indicia; upper and lower openings in the dial face in alignment with digital log and depth meters of the electro-mechanical and LCD-type, respectively; the upper opening interrupting the indicia centered about a twelve o'clock position and actuators for the indicators responsive to sensed variables of speed, distance and water depth. |
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DETAILED DESCRIPTION The present invention relates to marine instruments and, more particularly, to a combined knotmeter, log or distance meter and depth sounder including a single, integrated display unit therefor.
Knotmeters, log or distance meters and depth sounders are well known marine instruments for indicating, respectively, the speed, the accumulated distance traveled (in total miles or knots) and the depth to bottom of marine vessels.
However, it is common practice to house these instruments in separate and adjacent casings whereby one has to view at least two separate indicators or displays to become aware of the abovementioned measured variables.
In accordance with the teachings of the present invention a single casing is provided to house an integrated face plate or display such that at a glance thereat the viewer is immediately apprised of all three measured variables.
The arrangement is compact, efficient, accurate and aids in promoting safety, in that decisions regarding corrective action can be made and implemented more expeditiously than if one had to glance at separate instruments.
Further, the displayed information is formatted in such a manner that is completely consistent with the commonly displayed formats of existing, nonintegrated units.
That is to say, the knotmeter portion of the display comprises an analog-type format employing indicia symmetrically arrayed about the periphery of the indicator face with which the pivotting pointer of a meter movement coacts; the log or distance indicating portion of the display comprises a digital, odometer-type display formatted to occupy an area of the indicator face that would be substantially centered at the "twelve o'clock" position of a clock face; and the depth indicating portion of the display comprises an electronic digital read-out located at substantially the "six o'clock" position of a clock face.
It will become apparent, from the ensuing detailed description of the invention, that the displayed functions are formatted in such a manner as to be psychologically compatible with the habits and reflexes of the users thereof
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Electrical and Wave 
