STEP SENSOR AND LADDER HAVING SAME
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United States of America Patent
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Issued Date -
Aug 21, 2014
app pub date -
Feb 14, 2014
filing date -
Feb 14, 2013
priority date (Note) -
Abandoned
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Abstract
A step sensor for mounting on a ladder having a step. The step sensor adapted to be mounted to the ladder. The step sensor includes a housing that holds a power source and electronic circuitry. An emitter is connected to the electronic circuitry and emits a light source over a top surface of the step. A sensor is also connected to the electronic circuitry and receives reflected light from the light source that is reflected by an object on the step. A noise generator generates an alert noise in response to the reflected light being detected by the light sensor, whereby the presence of an object is detected on the step and the alert is generated by the noise generator. A ladder including such a step sensor.
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