Wind direction indicator
阅读：239发布：2021-09-14
专利汇可以提供Wind direction indicator专利检索，专利查询，专利分析的服务。并且There is disclosed herein a wind direction indicator in which an improved weather vane incorporating an elongated airfoil-shaped member for providing the weather vaning is coupled to a potentiometer enclosed in a housing. The potentiometer is coupled to an indicating means that provides a visual display. Mechanically, the weather vane coupling to the potentiometer is within a cavity of the housing that is utilized also as an oil reservoir for lubricating the shaft of the weather vane and the potentiometer so that free rotation thereof may be obtained over extended periods of operation without servicing. The indicating means has two modes of operation on the display device for providing both a high scale and a low scale. That is, when the invention is utilized in boat applications for indicating the direction of the wind relative to, for example, the centerline of the boat extending from the bow to the stern when sailing off the wind the relative wind can have comparatively high-angular relationship to the centerline of the boat and consequently the display device indicates with comparatively large increments the large angular displacements. In the second mode of operation for a sailboat when running close hauled, the angle of the relative wind is comparatively more important and generally the angle will be in a range of between 20* and 50* from the centerline. Consequently, in the second mode of operation the 20* to 50* range of angles of relative wind is expanded to cover the full range of the display device for indicating such angles with comparatively small increments. Signal-damping means are also included so that short time duration wind changes will not provide excessive signal variations in the display device.，下面是Wind direction indicator专利的具体信息内容。
1. In a wind direction indicating arrangement for a sailboat, said wind-direction-indicating arrangement of the type having a wind direction detection means for detecting the direction of the wind and generating an information signal having a magnitude proportional to the angular difference between the detected wind direction and a predetermined alignment direction corresponding to the fore-and-aft centerline of the sailboat, the improvement comprising, in combination: an indicating means comprising a visual display means comprising an electric meter having a dial face and a needle movable relative to said dial face and said needle moving in response to said information signal and said dial face having: first scale means for indicating said angular difference between said detected wind direction and said predetermined alignment direction for said detected wind direction between 0* and 180* in a clockwise direction from said predetermined alignment direction and for said detected wind direction between 0* and 180* in a counterclockwise direction from said predetermined alignMent direction; and said meter having a first arcuate portion on the order of 6* centered to correspond to said 0* direction and said 0* direction corresponding to dead ahead for said sailboat and said display means reading 0* for wind direction corresponding to 0* to 3* in a clockwise direction and 0* and 3* in a counterclockwise direction from said predetermined alignment direction; said said dial face of said display means further comprises: a second scale means for providing a second indication for indicating said measured wind direction within a predetermined first angular range of less than 180* in a clockwise direction and in a counterclockwise direction from said predetermined alignment direction, and said needle moving relative to said dial face in a first mode of operation for indicating wind directions on said first scale and in a second mode of operation for indicating wind direction on said second scale; and said needle moving relative to said dial face substantially the same for full scale deflection on said first scale and on said second scale; and means for switching from said first mode of operation to said second mode of operation and from said second mode of operation to said first mode of operation.
2. The arrangement defined in claim 1 wherein: said wind direction detection means further comprises: a housing means having walls defining a cavity therethrough extending from a base portion thereof to a spaced-apart top portion thereof, and said cavity having a potentiometer-receiving chamber adjacent said base portion and a bearing-receiving chamber adjacent said top portion; a low-torque potentiometer positioned in said potentiometer-receiving chamber and having a drive shaft extending a predetermined distance into said bearing receiving chamber; a coupling shaft drivingly engaging said potentiometer drive shaft and rotatingly mounted in said bearing-receiving chamber of said cavity for rotating said potentiometer drive shaft; a cover means for covering said top portion of said cavity; base means coupled to said housing for sealingly closing said cavity at said base portion thereof; weather vane shaft drivingly coupled to said coupling shaft and extending away therefrom for rotating said coupling shaft; weather vane means having a transverse shaft means coupled to said weather vane shaft, body means coupled to said transverse shaft for positioning said transverse shaft in a first alignment direction parallel to the wind direction, and a nose counterweight, and said weather vane means rotating said weather vane shaft to rotate said potentiometer to a predetermined position corresponding thereto to generate said information signal.
3. The arrangement defined in claim 2 wherein: said body means of said weather vane further comprises: a first side member and a second side member and said first side member and said second side member are substantially identical and each define a vertically disposed airfoil section, and said body means is coupled to said transverse shaft adjacent to an aft end thereof; and said nose counterweight coupled to said transverse shaft adjacent a forward end thereof; said cover means is coupled to said coupling shaft and rotates therewith, and said cover means is spaced a predetermined distance from said top portion of said cavity; a bearing mounted in said bearing receiving chamber; said coupling shaft is rotatingly supported in said bearing mounted in said bearing-receiving chamber of said cavity; said bearing-receiving chamber and said potentiometer-receiving chamber each further comprise an oil reservoir storage portion; and oil in said oil reservoir portion and said oil having a specific gravity greater than the specific gravity of water for lubricating said potentiometer and said bearing.
4. A wind direction indicator coMprising, in combination: a housing means having walls defining a cavity therethrough extending from a base portion thereof to a spaced-apart top portion thereof, and said cavity having a potentiometer-receiving chamber adjacent said base portion and a bearing-receiving chamber adjacent said top portion; a low-torque potentiometer positioned in said potentiometer-receiving chamber and having a predetermined alignment direction and having a drive shaft extending a predetermined distance into said bearing-receiving chamber; a coupling shaft drivingly engaging said drive shaft of said potentiometer and rotatingly mounted in said bearing-receiving chamber of said cavity for rotating said drive shaft; cover means for covering said top portion of said cavity; base means coupled to said housing for sealingly closing said cavity at said base portion thereof; a weather vane shaft drivingly coupled to said coupling shaft and extending therefrom for rotating said coupling shaft; weather vane means comprising: a transverse shaft means coupled to said weather vane shaft; a body means coupled to said transverse shaft for positioning said transverse shaft in first alignment directions parallel to the wind direction; and a nose counterweight coupled to said transverse shaft in spaced-apart relationship to said body means; and said weather vane means rotating said weather vane shaft to rotate said potentiometer into predetermined positions corresponding thereto and said potentiometer generating an information signal having a magnitude proportional to the angular separation between said first alignment direction and said predetermined alignment direction; indicating means for receiving said information signal and having a display means for providing visual display proportional to the magnitude of said information signal; and said indicating means comprising a display means, and said indicating means having a first mode of operation for providing a first indication on said display means for indicating said first alignment direction for the condition of said first alignment direction between 0* and 180* in a clockwise direction from said predetermined alignment direction, and a second indication on said display means for indicating said first alignment direction, and a second indication on said display means for indicating said first alignment direction for the condition of said first alignment direction, between 0* and 180* in a counterclockwise direction from said predetermined alignment direction, and further means providing a second mode of operation for providing a third indication on said display means for indicating said first alignment direction for the condition of said first alignment direction within a first predetermined angular range less than 180* in a clockwise direction from said predetermined alignment direction, and a fourth indication on said display means for indicating said first alignment direction for the condition of said first alignment direction within said predetermined angular range in a counterclockwise direction from said predetermined alignment direction.
6. The arrangement defined in claim 4 wherein: said first predetermined angular range is on the order of 30* and comprises a range of 20* to 50* in the clockwise direction and counterclockwise direction from said predetermined alignment direction. 6 The arrangement defined in claim 5 and further comprising: a damping means connected to said potentiometer and to said display means for damping said information signal to damp out small time duration changes in said first alignment direction; and switch means operatively connected to said display means for switching said display means from said first mode of operation to said second mode of operation.
7. The arrangement defined in claim 4 wherein said weather vane means comprises a body means having a firSt side member and a second side member, and said first side member and said second side member substantially identical and each define a vertically disposed airfoil section and are coupled to said transverse shaft adjacent to an aft end thereof; and a nose counterweight coupled to a forward end of said transverse shaft.
8. The arrangement defined in claim 7 wherein: said cover means is coupled to said coupling shaft and rotates therewith and is spaced a predetermined distance from said top portion of said cavity; said coupling shaft is rotatingly supported in said bearing-receiving chamber of said cavity by a bearing; said bearing-receiving chamber of said cavity and said potentiometer-receiving chamber of said cavity each further comprise an oil reservoir portion; oil having a specific gravity greater than the specific gravity of water in said oil reservoir portions for lubricating said bearing and said potentiometer; and said first side member and said second side member of said body means of said weather vane means each comprise a thin-walled shell means.
9. A wind direction indicator comprising, in combination: a housing means having walls defining a cavity therethrough extending from a base portion thereof to a spaced-apart top portion thereof, and said cavity having a potentiometer-receiving chamber adjacent said base portion and a bearing-receiving chamber adjacent said to portion, and said bearing-receiving chamber and said potentiometer receiving chamber each further comprising an oil reservoir storage portion, and in said oil reservoir portion and said oil having a specific gravity greater than the specific gravity of water for lubricating said potentiometer and said bearing; a low-torque potentiometer positioned in said potentiometer-receiving chamber and having a predetermined alignment direction, and having a drive shaft extending a predetermined distance into said bearing-receiving chamber; a baring mounted in said bearing-receiving chamber; a coupling shaft drivingly engaging said drive shaft of said potentiometer, and said coupling shaft rotatingly mounted in said bearing in said bearing-receiving chamber of said cavity, for rotating said drive shaft; cover means for covering said top portion of said cavity, and said cover means coupled to said coupling shaft and rotating therewith, and said cover means spaced a predetermined distance from said top portion of said cavity; base means coupled to said housing for sealingly closing said cavity at said base portion thereof; a weather vane drivingly coupled to said coupling shaft and extending therefrom for rotating said coupling shaft; weather vane means comprising: a transverse shaft means coupled to said weather vane shaft; a body means coupled to said transverse shaft for positioning said transverse shaft in first alignment directions parallel to the wind direction; and a nose counterweight coupled to said transverse shaft in spaced-apart relationship to said body means; and said weather vane means rotating said weather vane shaft to rotate said potentiometer into predetermined positions corresponding thereto, and said potentiometer generating an information signal having a magnitude proportional to the angular separation between said first alignment direction and said predetermined alignment direction; and said body means comprising: a first side member and a second side member and said first side member and said second side member substantially identical and each defining a vertically disposed airfoil section, and said body means coupled to said transverse shaft adjacent an aft end thereof; and and said nose counterweight coupled to said transverse shaft adjacent a forward end thereof; and indicating means for receiving said information signal and having a display means for providing a visual display proportional to the magnitude of said information signal.
10. The arrangement defined in claIm 9 wherein said first side member and said second side member of said body means comprise thin-walled shell means.
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