Ice screw having breakaway or flexing crank handle
AssigneeBlack Diamond Equipment, Ltd.
InventorsWilliam R. Belcourt, Charles G. Brainerd
Life of this patent
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AssigneeBlack Diamond Equipment, Ltd.
InventorsWilliam R. Belcourt, Charles G. Brainerd
Estimating the term…
The present invention features an ice screw for use in ice climbing, wherein the ice screw comprises: a hollow shaft having a plurality of screw threads formed thereon for securing the ice screw to a body of ice; a hanger coupled to the hollow shaft for receiving a carabiner and supporting a climber; and a flexing crank handle coupled to an aperture or eye formed within the hanger, wherein the flexing crank handle functions as a crank arm for screwing the ice screw into the body of ice, and wherein the flexing crank arm displaces or flexes from a resting, cranking position to a plurality of flexed positions in response to a load induced thereon. The flexing crank handle reduces the chance for cross-loading of an attached carabiner due to the existence of a crank handle without requiring any manual manipulation (e.g., folding) of the crank handle once the ice screw is inserted into the ice structure.
An ice screw for use in ice climbing, said ice screw comprising:
A flexing crank handle for use with an ice screw, said flexing crank handle comprising a hanger for driving said ice screw:
A method for correcting existing and potential cross-loading of a carabiner coupled to an ice screw inserted into a body of ice, said method comprising the steps of:
Dependencies are inferred from the claim text.