Buckles – buttons – clasps – etc. – Cord and rope holders
Patent
1982-06-07
1984-06-19
Levy, Stuart S.
Buckles, buttons, clasps, etc.
Cord and rope holders
241226, 52223L, 254228, F16G 1100, E04C 326
Patent
active
044546335
ABSTRACT:
Apparatus for releasing the means for gripping a pre-stress cable, to allow the cable to be detensioned. Each strand is usually maintained in the tensioned state by a cone truncated group of gripping means enveloping this strand. According to the invention each of the gripping means of a group surrounding a strand comprises towards the outside an extension which, in the active state of the gripping means, is spaced apart from this strand, all the extensions thus determining a volume of revolution terminating towards the outside by a hooking flange, while the extractor is formed by resilient parts distributed along the generatrices of a cylinder and comprises inwardly turned hooking flanges, the circumference determined by all the inner edges of the projections in the state of rest being of smaller diameter than that of the volume formed by the outer surface of the extensions of the gripping means beyond their hooking flange, when these gripping means are in the active state.
REFERENCES:
patent: 3412511 (1968-11-01), Dietrich
patent: 3605361 (1971-09-01), Howlett et al.
patent: 4114242 (1978-09-01), Luthi
Amelot Bernard
De La Fuente Carlos
Conley Ned L.
Freyssinet International (Stup)
Hail III Joseph J.
Levy Stuart S.
Rose David Alan
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