Assembled seal disc for a crankshaft

Details Assembled seal disc for a crankshaft Assembled seal disc for a crankshaft

1991-12-23

1993-11-30

Okonsky, David A.

Internal-combustion engines

Transmission mechanism from piston

Crankshaft and connecting rod

74597, 2988808, F16C 320, F02B 3304

Patent

active

052655660

ABSTRACT:
A crankshaft for a two stroke engine requiring a seal disc on each crank pin is formed by forging, machining and heat treating without a seal disc and then applying a two part seal disc to each crank pin. The two parts of the seal disc have a mating interface in line with the center of the crank pin and a semi-circular recess in each part surrounds half of the crank pin. The parts are dimensioned to effect an interference fit on the crank pin when assembled with sufficient force. The parts are secured together by laser welding, bolts or by adhesive bonding. In the case of welding, the parts are assembled with dowels normal to the interface to maintain the proper alignment during welding and to reinforce the strength of the final assembly.

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patent: 4898134 (1990-02-01), Breckenfeld et al.
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