Chain coupling assembly
AssigneeFrenolink Förvaltnings AB
InventorLars Fredriksson
Life of this patent
Estimating the term…
Abstract
A chain coupling assembly comprising a closed ring member (1) to be coupled to a hoist, e.g. a lifting hook, and at least one chain coupling or shortening member (5) to be coupled to a hoisting chain. A portion (1e) of the ring member is flattened so as to fit snugly into an insertion opening (6) leading to a hook portion (3) of the chain coupling or shortening member (5). Hereby, the closed ring member (1) and the chain coupling or shortening member (5) can be securely connected directly to each other.
Claims7
A chain coupling assembly for coupling a hoisting means to a respective hoisting chain, said chain coupling assembly comprising:
- a closed ring member for coupling to said hoisting means;
- a unitary chain coupling member having a hook portion for direct connection to said closed ring member and having a chain grabbing portion for direct coupling to said respective hoisting chain;
- and
- at least one portion of said closed ring member having a flattened, non-circular cross-section and said hook portion of said unitary chain coupling member having an insertion opening facing generally towards said chain grabbing portion and being dimensioned to snugly receive said at least one portion of said closed ring member upon insertion of said closed ring member into said hook portion;
- wherein said chain grabbing portion of said unitary chain coupling has a recess for accommodating and holding a link of said hoisting chain in a well-defined position enabling said hoisting chain to be shortened and lengthened.
A unitary chain coupling member for use together with a closed ring member, said closed ring member including at least one portion having a flattened, non-circular cross-section, said chain coupling member comprising:
- a chain grabbing portion for direct coupling to a hoisting chain;
- and
- a hook portion for direct connection to said closed ring member, said hook portion having an insertion opening facing generally towards said chain grabbing portion and being dimensioned to snugly receive said at least one portion of said closed ring member.
Dependencies are inferred from the claim text.