Operating System for a Folding Trailer
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United States of America Patent
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N/A
Issued Date -
Jun 14, 2012
app pub date -
Dec 14, 2010
filing date -
Dec 14, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system for extending and retracting a folding trailer. The trailer has a movable top extending from a base, and a plurality of extendible supports mounted on the base and connected to the top. A drive including an electric motor extends and retracts the extendible supports in unison to extend and retract the top. A controller is provided for the drive, the controller having a motor load monitor having both an ultimate load detector and a calculated load detector. In extending and retracting the top, the load of the electric motor is regularly monitored, and is first compared with an ultimate load threshold. The motor is stopped if the ultimate load threshold is met or exceeded. The monitored load is also compared with a stall load threshold, and the motor remains in operation until the stall load threshold is met or exceeded.
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