×

Method and apparatus for determining position in a pipe

  • US 20020093431A1
  • Filed: 12/21/2001
  • Published: 07/18/2002
  • Est. Priority Date: 08/28/1998
  • Status: Active Grant
First Claim
Patent Images

1. A method for determining position in a fluid pipeline, comprising the following steps:

  • (a) providing a pipe tool including a radio frequency transmitter and receiver;

    (b) further providing recording means for recording signals received by the receiver;

    (c) further providing a plurality of radio identification devices for resonating and transmitting responses to the receiver of the radio frequency transmitter, when the radio identification devices receive a signal from the radio frequency transmitter;

    (d) installing the radio identification devices in the pipeline, at predetermined intervals thereamong;

    (e) passing the pipe tool through the pipeline;

    (f) sequentially triggering a response from each of the radio identification devices within by means of the transmitter of the pipe tool, as the pipe tool with its transmitter passes each of the radio identification devices in the pipeline; and

    (g) recording the responses of the radio identification devices using the recording means.

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