Hook device

Buckles – buttons – clasps – etc. – Separable-fastener or required component thereof – Including member having distinct formations and mating...

Reexamination Certificate

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Reexamination Certificate

active

06519818

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a hook device. More particularly, the present invention relates to a hook device which can hook a heavy article safely.
A conventional safety hook is often soldered with a safety buckle. However, the conventional safety hook and the safety buckle are weakened by a heat treatment. Thus the conventional safety hook and the safety buckle will be broken while carrying a heavy article.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a hook device which can hook a heavy article safely.
Another object of the present invention is to provide a hook device which has a movable fastener surrounding a main body without any rivet so that a structure of the main body will not be weakened.
Another object of the present invention is to provide a movable fastener which has an elastic element to engage with a hook portion of a main body stably.
Accordingly, a hook device comprises a main body having a connection portion and a hook portion, and a movable fastener disposed on the main body. The movable fastener has a corrugated plate having two curved end portions and a U-shaped middle portion having a plurality of through holes, and an elastic element having a first L-shaped portion and a second L-shaped portion. The curved end portions of the movable fastener encloses the connection portion of the main body. The first L-shaped portion of the elastic element and the second L-shaped portion of the elastic element pass through the through holes of the U-shaped middle portion of the corrugated plate.


REFERENCES:
patent: 988499 (1911-04-01), Owen
patent: 1007213 (1911-10-01), Lau
patent: 1092238 (1914-04-01), Baxter
patent: 1493703 (1924-05-01), Rice
patent: 4454635 (1984-06-01), Russell
patent: 5127219 (1992-07-01), Herron et al.
patent: 5274946 (1994-01-01), Fusco
patent: 5832572 (1998-11-01), Norrby
patent: 5867877 (1999-02-01), Patterson et al.
patent: 5913479 (1999-06-01), Westwood, III
patent: 5937490 (1999-08-01), Mihailovic
patent: 6195848 (2001-03-01), Jackson et al.

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