Speedometer with an exceeding speed warning device
OwnerKatsutoshi Ono, Yasumasa Takagiinventors
Life of this patent
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Abstract
A lever fixed to a metal cap or speed cup of a speedometer is vibratably engageable with projections provided on a rotating ring member when a speed pointer rotatable with the metal cap deflects beyond a predetermined maximum index, so that the speed pointer is vibrated to give a warning to the vehicle driver.
Claims11
A speedometer for measuring rotational speed and for providing a visible warning by pointer vibration when excessive speed is reached comprising:
- a housing;
- a shaft, the speed of which is to be measured, extending through the bottom face of said housing and having a permanent magnet fixed for rotation therewith located within the housing;
- a spindle located essentially spacedly coaxially to said shaft extending through the top face of the housing, said spindle being rotatable against the bias of a spring in response to rotation of said shaft;
- a metal speed cap fixedly attached to said spindle located within the housing and adjacent to said magnet and magnetically connected therewith to produce said spindle rotation;
- a ring member parallelly mounted adjacent to said metal cap provided with a plurality of projections and rotatably driven by said shaft;
- means on said speed cap consecutively contactable with said projections for causing said metal cap to vibrate at a given degree of angular rotation mounted on said cap;
- and a speed pointer attached to said spindle at the portion extending above the upper face of the housing said vibrations correlated to the location of the speed pointer in response to rotation odf the spindle beyond the predetermined point.
A speedometer for a motor vehicle, comprising a housing, a permanent magnet fixed for rotation with a first shaft the speed of which is to be measured, said first shaft being mounted in said housing, a metal speed cap disposed in said frame adjacent but spaced from said permanent magnet and attached to a spindle carrying a speed pointer, said speed pointer located exterior to said housing, said spindle being rotatable against the bias of a spring as a result of first shaft rotation due to magnetic connection therewith, an odometer operatively connected to said shaft through a series of shafts including a second shaft which is arranged substantially parallel with said spindle, a ring member provided at the outer surface of said second shaft with a plurality of projections and firmly disposed onto said second shaft at a position near the periphery of said metal cap, and means on said cap consecutively engageable with said projections for causing said metal cap to vibrate at a given degree of angular rotation when said pointer deflects beyond a predetermined point.
Dependencies are inferred from the claim text.