Chain – staple – and horseshoe making – Chains – Links
Patent
1993-04-08
1994-03-08
Jones, David
Chain, staple, and horseshoe making
Chains
Links
59 4, 59 5, 474220, F16G 1302
Patent
active
052917304
ABSTRACT:
A knuckle connector is used to connect spacedly end knuckles of a chain strand to form a chain loop. The knuckle connector includes a pair of link units, each of which has a link pin and an oval-shaped link plate formed with a circular through-hole on one end and a retaining hole on an opposite end. The link pin has a head secured in the through hole and a tail end formed with a peripheral channel. The link pin of one of the link units extends through a pin hole formed in a corresponding one of the end knuckles such that the peripheral channel initially extends into a large insert part of the retaining hole in the link plate of a remaining one of the link units. The peripheral channel of the link pin of one of the link units engages the link plate of the remaining one of the link units in a diameter-reduced retaining part of the retaining hole when the end knuckles are pulled apart. The link plate of each link unit is provided with an inclined stop member that includes a cantilevered tab and terminates at an end knuckle abutment face. The inclined stop member is formed by punching the link plate at one side of the insert part of the retaining hole opposite to the retaining part. The stop members of the link plates extend into a space between the end knuckles and face a respective one of the end knuckles. The stop members prevent movement of the end knuckles toward one another.
REFERENCES:
patent: 586472 (1897-07-01), Appleby
patent: 628386 (1899-07-01), Berry et al.
patent: 891189 (1908-06-01), Schmidt, Jr.
patent: 4043215 (1977-08-01), Long et al.
patent: 5178585 (1993-01-01), Lin et al.
patent: 5186569 (1993-02-01), Wu
Jones David
KMC Chain Industrial Co., Ltd.
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