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US 2006/0138987 A1Published application
Barrier operator controller with user adjustable force setpoint
AssigneeOverhead Door Corporation
InventorMichael McMahon
Life of this patent
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AssigneeOverhead Door Corporation
InventorMichael McMahon
Estimating the term…
A control unit for a moveable barrier, such as a garage door, includes a microcontroller connected to a motor speed detector, motor current sensor or a sensor for determining forces exerted on or by the barrier. A user interface includes user actuatable switches for setting a first maximum force value to be exerted on or by the barrier when moving in one direction and the microcontroller automatically sets the value of a second maximum force to be exerted on or by the barrier when moving in the opposite direction. The second force value may be based on the force value set by the user or the second force value may be a preset value. Both force limits may be automatically set as a function of a maximum force exerted on said barrier during movement thereof, during a force learning operation.
1-25. (canceled)
In an operator for a barrier moveable between open and closed positions, said operator including a motor, a control unit for controlling operation of said motor, a sensor for sensing a parameter which corresponds to a force exerted by said barrier when moving between open and closed positions, a motor control circuit for controlling operation of said motor, a controller in communication with said motor control circuit and said sensor and a user interface operably connected to said controller including user controllable means for setting a first force limit to be exerted by said barrier when moving between said open and closed positions, the method including the steps of:
In an operator for a barrier moveable between open and closed positions, a motor and a control unit for controlling operation of said motor, said control unit comprising:
Dependencies are inferred from the claim text.