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GROUND MARKER DEVICE

  • US 3,709,188 A
  • Filed: 02/01/1971
  • Issued: 01/09/1973
  • Est. Priority Date: 02/01/1971
  • Status: Expired due to Term
First Claim
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1. A ground marker device comprising a casing insertable into a hole formed in the surface of the ground, said casing having an internally threaded upper end and diametrically opposed slots intermediate the length thereof, a pair of anchor arms hingedly connected together at one end and having sharpened tips at their opposite ends, said anchor arms extending across the casing with the tips thereof projecting through the slots and being embedded in a side wall of the hole, a locking disc threadedly received within the upper end of the casing, and a marker plug threadedly fitted into the upper end of the casing to frictionally engage and be releasably held against rotation by the locking disc.

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