E - Fixed Constructions – 05 – F
Patent
E - Fixed Constructions
05
F
354/28, 342/40,
E05F 15/16 (2006.01) B60J 10/00 (2006.01) E05F 15/00 (2006.01) H02H 7/085 (2006.01)
Patent
CA 2015618
An automatic window opening/closing system includes a motor for driving a window. In association with the window, a pressure responsive sensor (preferably, a pressure responsive sensor with a coaxial structure having uniform sensitivity to pressures in all directions) is provided. A detector circuit is coupled to the pressure responsive sensor and evaluates a rate of change of a pressure on the sensor, thereby detecting a squeezed object caught in a way of the window during an operation of the system. A motor control circuit is provided to control the motor in response to a squeezed object detection signal from the detector circuit in such a direction to release the object from the window. The motor control circuit detects an overload condition of the motor in accordance with a motor terminal voltage and deenergizes the motor to prevent the motor from generating heat. Therefore, this system achieves improved performance, high reliability and safety.
Gowling Lafleur Henderson Llp
Kabushiki Kaisha Riken
LandOfFree
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