Patent ID: 7744472
Filing Date: 2010-06-29
Classification: A01K,F41B

Abstract:
1. A shark deterrent device comprising: first and second concentric hollow shafts, each with a proximal end and a distal end, wherein the second shaft is slidably disposed within the first shaft and the shafts capable of telescopic extension; a self-lock mechanism disposed adjacent to the proximal end of the second shaft, the self lock mechanism comprising a radially expanding shoulder operable to exit the distal end of the first shaft, radially expand, abut an open end of the first shaft, and lock the first and second shafts in an extended position; a release ring slidably mounted around a circumference of the second hollow shaft operable to engage a surface and depress the radially expanding shoulder allowing it slide into the first hollow shaft; a tip, attached to the distal end of one of the hollow shafts; and a spring disposed in one of the hollow shafts.