Restricted movement chain and universal link therefor

Details Restricted movement chain and universal link therefor Restricted movement chain and universal link therefor

1998-03-02

1999-10-26

Jones, David

Chain, staple, and horseshoe making

Chains

Conduit

59 781, 59 84, F16G 1320

Patent

active

059707011

ABSTRACT:
The present invention features a chain of serially connected, universal links. The chain is movable in one direction, but restricted in movement in the opposite direction. The chain consists of a number of substantially identical links. Each of the links has an elongated body portion with abutments at distal ends thereof. The abutments engage respective abutments of neighboring links. Connected to the body portion of each link are two leg portions. The two leg portions each have an aperture for receiving a pin. At least one of the leg portions may be bifurcated into two, substantially parallel sides. The two sides of one of the bifurcated leg portions are spaced apart from one another so as to contain the other leg portion of a neighboring link. This other leg portion may be solid. Each leg extends beyond the distal ends of the body portion, so that, when the links are connected to one another, the aperture of one of the legs is aligned with the aperture of a neighboring leg. Thus, a single pin can be inserted through two apertures for pivotally connecting the leg portions of respective links to one another, thereby connecting the links themselves together, serially. A flexible cable can be attached to the body portion of each link to provide rigidity when the chain is extended.

REFERENCES:
patent: 3930587 (1976-01-01), Bliss
patent: 4600817 (1986-07-01), Hackenberg
patent: 5332865 (1994-07-01), Jensen
patent: 5638672 (1997-06-01), Furukawa
patent: 5724803 (1998-03-01), Pea

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