US 6,282,879 B1Granted

Shackle (clevis) for hooking onto a chain

AssigneeKong Inc.

InventorsMarco Bonaiti, Sauro Servadei

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Abstract

A shackle or clevis for hooking to the link of a chain, of the type comprising an external support half-ring formed by an arch of the half-ring and by two legs of the half-ring which originate from the opposite ends of said arch, each of the two legs having the terminal end widened and provided with a transverse hole which, in the position of closure of the shackle, is aligned with the transverse hole of the other one; and a bolt, possibly unlosable, slidingly supported in the hole of a leg so as to be inserted in the hole of the other leg, provided with means for locking dosure of the shackle; said shackle also comprises inside the support half-ring a fork which can be inserted on a diameter of the two straight sides of the link of chain to be hooked and which can be clamped between the links chained to said chain link to be hooked, said fork having each leg integral with and parallel to a corresponding leg of the support half-ring and mouth lying on the side of the bolt.

A shackle for connection of an external element to a chain link of a chain, said chain link having a diameter, a pair of opposite rectilinear sections and a pair of opposite arcuate sections joining said pair of opposite rectilinear sections of the chain link, said shackle comprising:

a rigid main body, said main body having an arch with an internal edge and an external edge, a first pair of legs each having a terminal end adjacent to the arch and an enlarged terminal end opposite to the arch, each said enlarged terminal end having an internal and an external edge;
a pair of aligned transverse through holes, each transverse through hole being provided on one of each of said enlarged terminal ends of said first pair of legs;
a bolt transversely insertable through said pair of transverse through holes;
a fork shaped chain link insertion element integral with said rigid main body and comprising:
a second pair of legs;
a transverse portion for connection of said second pair of legs, said transverse portion having an internal edge and an external edge;
and
a mouth portion opposite to said transverse portion, said mouth portion having an opening dimension, a height dimension and a depth dimension;
each leg of said second pair of legs being adjacent and internal to a leg of said first pair of legs;
said transverse portion being adjacent and internal to said arch;
said mouth portion being adjacent to said pair of enlarged terminal ends;
said fork shaped insertion element being operable for transversely inserting in said mouth portion said pair of rectilinear opposite sections of said chain link;
said bolt being operable for closure of said mouth portion after insertion of said chain link into said mouth portion;
said opening dimension of said mouth portion of said fork shaped insertion element not exceeding 50% of the diameter of said chain link;
said depth dimension of said mouth portion of said fork shaped insertion element being not lower than the transverse dimension of said chain link;
and
an opening, delimited by the internal edge of said arch and the external edge of said transverse portion, for connecting said external element to the shackle.
2.The shackle according to claim 1 wherein said height dimension of said mouth portion is set lower than the diameter of the chain link.

15 more elements

Abstract

Claims10