Odometer for boats专利检索-里程计测量仪器和方法专利检索查询-专利查询网

Odometer for boats

阅读：985发布：2023-07-06

专利汇可以提供Odometer for boats专利检索，专利查询，专利分析的服务。并且An odometer for boats consisting of a counter driven by an electric motor of variable speed, and apparatus for varying the speed of the motor in closely proportional relation to the speed of the boat. The motor may be of a type the speed of which is variable by changing the voltage of its operating circuit, and an electrical system may adjust this voltage by means of a variable rheostat operated by a pressure-sensitive device responsive to fluid pressure generated by forward movement of the boat in a passage opening forwardly adjacent the boat hull.，下面是Odometer for boats专利的具体信息内容。

权利要求

1. An odometer for boats comprising: a. a counter, b. variable speed driving means operable to drive said counter, and c. control means operable to regulate the speed of said driving means proportionately to the speed of travel of a boat, said control means comprising a pitot tube adapted to be mounted on a boat and having an opening facing forwardly of said boat adjacent the hull thereof, pressure-responsive means interconnected with said pitot tube opening and operable responsively to pressure variations in said pitot tube caused by changes of speed of said boat to regulate the speed of said driving means proportionately to the pressure generated in said pitot tube by movement of said boat, and adjusting means operable to vary the response of said pressure-responsive means to pressure changes in said pitot tube, said adjusting means being operable independently in a plurality of zones over the speed range of the boat, whereby to compensate for non-linear proportionality between the pitot tube pressure and the actual speed of the boat.

2. An odometer as recited in claim 1 with the addition of a tachometer driven by said driving means to indicate the actual recording rate of said counter, whereby by comparing said recording rate to the actual boat speed, the recording rate may be corrected by use of said adjusting means.

3. An odometer as recited in claim 1 wherein said driving means constitutes an electric motor the speed of which is variable in direct proportion to the voltage of its operating electric circuit; wherein said pressure-responsive means comprises an operative electric circuit including a source of electric power and said motor, a variable resistor connected in series in said motor circuit, and a pressure-sensitive device connected to said pitot tube opening and operable to adjust said variable resistor in inverse ratio to the pressure generated in said pitot tube by movement of said boat; and wherein said adjusting means comprises a plurality of trim resistors, means operable by said pressure-sensitive device to insert said trim resistors selectively into said Motor circuit, successively at different zones of the full pressure range supplied by said pitot tube, and manually operable means for adjusting the resistance of each of said trim resistors.

4. An odometer as recited in claim 3 with the addition of a tachometer driven by said electric motor whereby to indicate the actual recording rate of said counter, whereby by comparison of said actual recording rate with the actual speed of the boat as measured by other means, said recording rate may be corrected by adjusting said trim resistors.

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Odometer for boats

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