Joints and connections – Screw or cam
Patent
1987-08-07
1992-02-04
Cuomo, Peter M.
Joints and connections
Screw or cam
403296, F16B 2120
Patent
active
050855360
ABSTRACT:
The threaded connection between a graphite shaft and a metal shaft, such as is used to drive a rotating nozzle in the refining of aluminum, is strengthened by coating the graphite surface that contact the flange portion of the metal shaft prior to the fastening of the shafts together. The coating comprises solid material bonded to the graphite surface to form a hard, adherent coating deposited by coating the graphite surface with a solution or colloidal dispersion of the material and drying said solution or colloidal dispersion to leave the solid material bonded to the graphite surface. The coating of the graphite shaft serves to greatly strengthen the threaded connection and the ability of the connection to transmit driving torque from the metal shaft to the graphite shaft.
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patent: 4679206 (1987-07-01), Burwell
patent: 4685822 (1987-08-01), Pelton
patent: 4711666 (1987-12-01), Chapman et al.
Cuomo Peter M.
Fritschler Alvin H.
Union Carbide Industrial Gases Technology Corp.
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