Owner Pure Technologies Ltd.

Inventors Paulson, Peter O.

Agent Fisher Adams Kelly

Pub. Number AU-A-2009261918

PCT Pub. Number WO2009/155708

Priority 61/075,497 25.06.08 US

Filing date 25 June 2009

Wipo publication date 30 December 2009

G01S 1/76 (2006.01) Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters

F16L 55/26 (2006.01) Devices or appurtenances for use in, or in connection with, pipes or pipe systems - Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means

F16L 55/48 (2006.01) Devices or appurtenances for use in, or in connection with, pipes or pipe systems

F17D 5/00 (2006.01) Protection or supervision of installations

F17D 5/06 (2006.01) Protection or supervision of installations

G01H 5/00 (2006.01) Measuring propagation velocity of ultrasonic, sonic or infrasonic waves

G01S 1/80 (2006.01) Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters