Attachment of fork fitting to fork leg

Details Attachment of fork fitting to fork leg Attachment of fork fitting to fork leg

1981-07-01

1983-09-13

Reynolds, B. A.

Electric heating

Metal heating

With forging or shaping

219104, 219105, 219149, 228173F, B23P 1300, B21J 508

Patent

active

044044585

ABSTRACT:
A method for attaching a bicycle fork fitting to a fork leg is disclosed, using a particular fork fitting means. A steel pipe is formed with a fork leg including its one closed distal end with a joint. The fitting means is provided with projections at the portions near to both ends of the side thereof to be welded. Electric currents are passed through the closed portion of the fork leg and the projections of the fitting which are brought in contact with each other under pressure. Upon reaching a temperature suitable for welding, the thus integrated arrangement is upset under greater pressure, so that the fitting is welded to the fork leg.

REFERENCES:
patent: 1898814 (1933-02-01), Charlton
patent: 2021157 (1935-11-01), Stahl
patent: 2127685 (1938-08-01), Greulich
patent: 2455057 (1948-11-01), Hart
patent: 3689969 (1972-09-01), Tsunoda

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