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Safety device for a door system

  • US 4,803,807 A
  • Filed: 07/10/1987
  • Issued: 02/14/1989
  • Est. Priority Date: 07/23/1986
  • Status: Expired due to Fees
First Claim
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1. A safety device for a door system, in particular for an automatic sliding door of a vehicle, having a pressure medium-operated servomotor for providing an opening force and a closing force to the door panel, and further including a door control with an operating pressure supply line associated with the pressure side of the servomotor acting in a closing direction of the door panel, and further comprising, in order to limit the closing force for the door panel, closing force sensor means for resiliently sensing the drive force of the servomotor during the closing process, and control valve means coupled to the means and moving therewith for automatically venting unthrottled the closing pressure side of the servomotor above a given response value of the closing force sensor means.

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