Ice screw with foldable crank handle

Details Ice screw with foldable crank handle Ice screw with foldable crank handle

1997-01-22

1998-07-21

Ramirez, Ramon O.

Supports

Brackets

Specially mounted or attached

248925, 411400, A47F 508

Patent

active

057824428

ABSTRACT:
An ice screw includes a hollow tubular shaft with external screw threads formed on the shaft and a hanger attached to the shaft. The hanger has an eye for clipping on a carabiner. A foldable handle is pivotally attached to the hanger to pivot between a crank position and a folded position. In the crank position, the handle extends from the hanger for grasping to rotate and thus rotate the shaft. In the folded position, the handle folds into a recess formed in the hanger. In the crank position, the hanger serves as a lever arm or crank arm for the handle.

REFERENCES:
patent: 5118061 (1992-06-01), Byrne et al.
patent: 5347718 (1994-09-01), Turner
Grivel Mont Blanc Since 1818, 1996 issue, pp. 48 & 49.
Trango Extraordinary Climbing Gear, TiScrew, p. 3.
Charlet Moser

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