Link plate assembly for a chain

Details Link plate assembly for a chain Link plate assembly for a chain

2008-03-30

2009-06-09

Jones, David B (Department: 3725)

Chain, staple, and horseshoe making

Chains

Links

C059S004000, C059S005000, C059S084000, C474S218000, C474S220000

Reexamination Certificate

active

07543437

ABSTRACT:
A link plate assembly includes two first plate, two second plate, and two pins. The first plate includes a first aperture, a second aperture and a receiving aperture. Four convex portions facing the second plate are formed on the first plate. The second plate includes a first aperture and a second aperture. Two concave portions facing the first plate are formed on the second plate. One end of each pin is secured to the first aperture of the first plate. The other end of each pin includes a head portion and a groove portion. The head portion passes through the first aperture of the second plates and the receiving aperture of the other first plate. The groove portion passes through the second aperture of the first plate. The convex portions of the first plates contact with a non-concave part of the second plates when assembling. The convex portions coincide with the concave portions to disassemble the link plate assembly as the second plate is rotated relative to the first plate in a predetermined angle.

REFERENCES:
patent: 4043215 (1977-08-01), Long et al.
patent: D280288 (1985-08-01), Lickton
patent: 5291730 (1994-03-01), Wu
patent: 5299416 (1994-04-01), Wu
patent: 5305594 (1994-04-01), Wang
patent: 5362282 (1994-11-01), Lickton
patent: 6244032 (2001-06-01), Christmas et al.

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