Expanding climbing aid

Details Expanding climbing aid Expanding climbing aid

1998-08-03

2000-03-28

Ramirez, Ramon O.

Supports

Brackets

Specially mounted or attached

248925, A47F 508

Patent

active

060420693

ABSTRACT:
The present invention is an improved mechanically expanding climbing aid which includes one or more pair of opposed cam members pivoting with crossed radii on eccentric bearings. The eccentric bearings are mounted on a single high strength shaft. The invention is specifically configured to be placed in cracks having side that are spaced under 1 cm.

REFERENCES:
patent: 4184657 (1980-01-01), Jardine
patent: 4565342 (1986-01-01), Grow
patent: 4575032 (1986-03-01), Taylor
patent: 4643377 (1987-02-01), Christianson
patent: 4645149 (1987-02-01), Lowe
patent: 4781346 (1988-11-01), Banner
patent: 4832289 (1989-05-01), Waggoner
patent: 5860629 (1999-01-01), Reed

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