Safety device for stairlifts
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United States of America Patent
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Jan 3, 2012
Grant Date -
Dec 22, 2005
app pub date -
Jul 16, 2003
filing date -
Aug 10, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
The invention describes an over-speed governor (21) for a stairlift (10) which not only triggers upon the carriage (12) exceeding a pre-determined speed, but also triggers in the event the chair (11) departs from the horizontal by more than a predetermined angle. The speed determining function is preferably electronic and the governor operates in both directions without adaptation. Other aspects are described including a trip speed check facility.
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