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US 2013/0136561 A1Published application
Ice screw for forming a removable belay point having a sharpening reserve at the base of each tooth
AssigneeZedel
InventorsAlain MAURICE, Guillaume BONNET
Life of this patent
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Abstract
An ice screw comprises an elongated shaft with an external thread, and a bit with teeth. Each tooth has a cutting edge, and the bit is provided at a longitudinal end of the shaft. A notch is formed in bit at the base of each cutting edge in order to delimit a sharpening reserve of the associated tooth.
Claims7
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,
- wherein a notch is formed in said bit at the base of each cutting edge in order to delimit a sharpening reserve of the associated tooth.
Dependencies are inferred from the claim text.