Self-contained add-on accessory for an analog metering device such as a speedometer or tachometer
AssigneeMarc S. Cohen
InventorMarc S. Cohen
Life of this patent
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Abstract
A self-contained accessory for an analog metering device such as a speedometer or tachometer. The accessory includes a sensor which is selectively adjustable to align with a plurality of positions in the range of movement of an output needle of the analog metering device. In the preferred embodiment, the sensor is alignable with gradation marks, e.g., miles per hour indicia on a speedometer, and the accessory provides a clear indication when a needle reaches a selected gradation. The indication alerts a user that a selected gradation has been reached by an output needle of the analog metering device. The accessory attaches to a cover of the analog metering device and allows adjustment of sensor position without removal of the accessory from the cover.
Claims9
A self-contained add-on accessory for an analog metering device having a moving needle as an indicator of a measured output parameter, the accessory comprising:
- a housing dimensioned to fit on a portion of a cover of the analog metering device without obscuring gradation marks on a face of the analog metering device;
- a selectively adjustable member extending from the housing and alignable with a plurality of different gradation marks on the face of the analog metering device;
- a sensor mounted in associated with said selectively adjustable member to detect when an output needle of the analog metering device reaches a gradation on the face of the analog device with which said selectively adjustable member has been aligned;
- and
- a power source within said housing for powering said sensor.
A self-contained add-on accessory for an analog metering device having a moving needle as an indicator of a measured output parameter, the accessory comprising:
- a sensor adjustable to a plurality of positions over a range of movement of the needle;
- a power source for powering said sensor;
- and
- a mount to mount the sensor and the power source on a portion of a cover of the analog metering device.
Dependencies are inferred from the claim text.