×

Door operator with electrical back check feature

  • US 8,390,219 B2
  • Filed: 07/29/2010
  • Issued: 03/05/2013
  • Est. Priority Date: 07/29/2010
  • Status: Active Grant
First Claim
Patent Images

1. A method of operating a door operator using a controller and an electric motor, the method comprising:

  • conditionally opening a door to which the door operator is attached;

    determining using a Hall effect sensor that the door to which the door operator is attached is being pushed open through a back check region;

    using the controller to cause the door operator, through electronic control of the electric motor, to exert a closing force on the door by injecting voltage into the electric motor until the door comes to a stop;

    conditionally preventing the opening of the door while the voltage is being injected into the electric motor; and

    closing the door.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×