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United States of America Patent
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Issued Date -
Sep 10, 2009
app pub date -
Mar 9, 2009
filing date -
Mar 7, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A lift system including a visual indicator device (for example, an LED indicator light) in data communication with travel limit switches so that tripping of the travel limit switches (or at least the travel limit switches that are manually set by a human assembler) will cause the visual indictor device to make a visual indication that can be readily observed by the human assembler. The visual indication of the present indication can helpfully replace the conventional method of listening for a click during the step of setting the location of the travel limit switch when the lift system is initially set up by a human assembler. Instead of listening for a click, the assembler can watch for a visual indication by the visual indicator device, such as the lighting of an LED. this can make the assembler's job easier and can facilitate quicker and more reliable setting of the location of travel limit switches in the lift system. Also, the correspondence between travel limit switches and indicator lights makes it much less likely that the installer will miswire the indicator lights.
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