Title:
ICE SCREW HAVING BREAKAWAY OR FLEXING CRANK HANDLE
Document Type and Number:
WIPO Patent Application WO2005025680
Kind Code:
A3
Abstract:
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.
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Inventors:
BELCOURT WILLIAM (US)
BRAINERD CHARLES G
BRAINERD CHARLES G
Application Number:
PCT/US2004/028706
Publication Date:
July 14, 2005
Filing Date:
September 02, 2004
Export Citation:
Assignee:
BELCOURT WILLIAM (US)
International Classes:
A47F5/08; A63B29/02; A63B; (IPC1-7): A47F5/08
Foreign References:
| US5782442A | 1998-07-21 | |||
| US20020074443A1 | 2002-06-20 | |||
| US5528803A | 1996-06-25 |
Other References:
See also references of EP 1677651A4
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