Surface tracker

Details Surface tracker Surface tracker

2006-07-25

2006-07-25

Hofsass, Jeffery (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572100, C340S568100, C340S541000, C324S066000, C324S067000, C324S326000, C116S200000, C116S209000, C343S867000

Reexamination Certificate

active

07081820

ABSTRACT:
A surface tracker includes a tubular marker body having an interior electronic marker and a visual indicator attached to an upper end of the marker body which extends away from the marker body. When deployed, the marker body is mostly underground and the visual indictor extends upwardly from the ground level to provide above-ground visual recognition. The visual indicator may be a plurality of resilient filaments which pass through a hole in a tab portion of the marker body at the upper end thereof, the filaments being folded about the tab portion and secured to the tab portion using a heat-shrink tube. The visual indication, along with the ability to electronically detect the marker, provides a tracker with superior locating capability.

REFERENCES:
patent: 4932910 (1990-06-01), Hayday
patent: 5532598 (1996-07-01), Clark et al.
patent: 5949373 (1999-09-01), Eslambolchi et al.
patent: 5984877 (1999-11-01), Fleischhacker, Jr.
patent: 6049279 (2000-04-01), Minarovic
patent: 6133738 (2000-10-01), Minarovic
patent: 6421928 (2002-07-01), Miller
patent: 6933438 (2005-08-01), Watts et al.

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