Supports – Pipe or cable – Extending through plate
Patent
1977-01-12
1978-02-21
Hafer, Robert A.
Supports
Pipe or cable
Extending through plate
A47G 2900
Patent
active
040748804
ABSTRACT:
A climbing wedge for use in mountaineering or speleology has the general shape of a hollow prism with a plurality of faces of different dimensions for use in fissures of different widths. Bosses are present, on each of two opposite parallel faces of the wedge, having openings therein for the passage of ropes. Recesses extend from the end of each of the opposite parallel faces to the boss thereon. Accordingly, two or more wedges of the same shape but different dimensions may be inserted into one another, with the bosses of the smaller wedge entering the corresponding recesses of the larger, without the necessity of removing any ropes passing through the bosses.
REFERENCES:
patent: 3877170 (1975-04-01), Bakker
patent: 3946975 (1976-03-01), Lyman
patent: 3957237 (1976-05-01), Campbell
Recreational Equipment Inc., 1974 Chocks Labelled "D".
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