Chain – staple – and horseshoe making – Chain making – Sprocket chain
Patent
1997-11-20
1998-09-15
Jones, David
Chain, staple, and horseshoe making
Chain making
Sprocket chain
474207, F16G 1302, F16G 1318, B21L 902
Patent
active
058062971
ABSTRACT:
A resin chain is provided which includes a reinforcing plate and a resin portion having a contact surface therebetween such that it is difficult to separate the reinforcing plate from the resin portion at the contact surface. The resin chain includes outer plates with pins fitted therein and inner plates with bushings fitted therein. The outer plates and the inner plates are connected to each other in an alternate manner. A first reinforcing plate is a constituent of each outer plate. The first reinforcing plate has a pair of cylindrical front and rear boss portions with pins fitted therein and a flange portion which rises radially from the outer peripheries of the boss portions to connect the paired front and rear boss portions to each other. A second reinforcing plate is a constituent of each inner plate. The second reinforcing plate has a pair of cylindrical front and rear boss portions with bushings fitted therein and a flange portion which rises radially from the outer peripheries of the boss portion to connect the paired front and rear boss portions to each other. Resin is molded along the surfaces of the flange portions front the outer peripheries of the cylindrical boss portions so as to fill up recesses formed between the boss portions and the flange portions. The outer and inner plates are also fabricated in this way.
REFERENCES:
patent: 3646752 (1972-03-01), Kampfer
patent: 3921792 (1975-11-01), Anderson et al.
patent: 4724669 (1988-02-01), Kanehira et al.
patent: 4757681 (1988-07-01), Matsuno et al.
Jones David
Tsubakimoto Chain Co.
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