×

Line fault discriminator

  • US 4,605,827 A
  • Filed: 08/24/1981
  • Issued: 08/12/1986
  • Est. Priority Date: 02/07/1980
  • Status: Expired due to Fees
First Claim
Patent Images

1. An auxiliary system for determining the existence of an abnormal change in load at the load end of a transmission line, said auxiliary system comprising a remote operating test station at the opposite end of said line and means, interposed in series in said line in proximity to said load and directly responsive to such abnormal change in load, for creating a phenomenon interpretable at said remote operating station as an abnormal change in load, said means responsive to said abnormal change in load including an electronic circuit in said line in series relationship with said load, said electronic circuit including a load side and a line side with said circuit being responsive only to said abnormal change in load occurring on the load side of said circuit.

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