Patent ID: 8899897
Filing Date: 2014-12-02
Classification: A63B,F16B

Abstract:
1. An ice screw for forming a removable belay point, said screw comprising: an elongated tubular shaft provided with an external thread; a bit with teeth provided at a longitudinal end of said shaft, each tooth having a cutting edge; a notch formed in said bit at the base of each cutting edge in order to delimit a sharpening reserve of the associated tooth; said cutting edge extending from the top of said tooth to the associated notch and including a bevel surface inclined towards an inside of said shaft forming a sharp cutting blade on an outside of said shaft; said notch having a bottom located rearwardly of the cutting edge in a screw in direction including a bevel surface inclined towards the inside of the shaft defining an axis which is non-coincident with an axis of said shaft.