Buckles – buttons – clasps – etc. – Bale and package ties – hose clamps – With tighteners
Patent
1988-03-29
1989-06-06
Brittain, James R.
Buckles, buttons, clasps, etc.
Bale and package ties, hose clamps
With tighteners
24241P, A44B 1302
Patent
active
048358231
ABSTRACT:
A snap-hook for use with ropes or the like, primarily for rock-climbing, made up of a body or hook in the shape of a "C" of which the straight rear central portion is extended by two curved arms, one upper, the other lower, of which the free ends are joined, on closing the snap-hook, by a pivoting finger moving on one of these two ends, said snap-hook comprising an internal periphery having an essentially semi-circular cross-section and an external periphery which is formed, on at least the whole length of the upper and lower arms, of a rib of uniform section, designed to increase the rigidity of the said upper and lower arms, without increasing, and even lightening, the weight of the snap-hook.
REFERENCES:
patent: D143096 (1945-12-01), Sasgen
patent: 285962 (1883-10-01), Bracken
patent: 340838 (1886-04-01), Walters et al.
patent: 779972 (1905-01-01), Rowland et al.
patent: 948980 (1910-02-01), Tischler
patent: 1237525 (1917-08-01), Keator
patent: 1256101 (1918-02-01), Baxter
patent: 2246630 (1941-06-01), Johnson
patent: 4095316 (1978-06-01), Gabriel
patent: 4309052 (1982-01-01), Drayton
patent: 4333212 (1982-06-01), Bibollet
Brittain James R.
Etablissements Contat Freres (S.A.)
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