Connecting-rod bolt

Details Connecting-rod bolt Connecting-rod bolt

1975-07-24

1977-04-19

Frazier, Roy D.

10 27R, 85 1T, F16B 2700

Patent

active

040181324

ABSTRACT:
A bolt usable for fastening connecting rods wherein an intermediate threaded portion is formed in the bolt shank between the bolt head and the fastening thread portion, which intermediate thread is reverse to and has a greater pitch than that of the fastening thread. A method of manufacturing the bolt is disclosed which comprises steps of cold heading the bolt head and rolling screw thread for fastening the big end portion of the connecting rod, further rolling the intermediate screw thread having reversed screw thread with respect to the fastening thread between the bolt head and the fastening thread and reducing the diameter of the intermediate thread through a finishing die.

REFERENCES:
patent: D34691 (1901-06-01), Monroe
patent: 2019049 (1935-10-01), Hoke
patent: 2024069 (1935-12-01), Sharp
patent: 2407928 (1946-09-01), Herreshoff et al.
patent: 3418012 (1968-12-01), Torre
patent: 3418013 (1968-12-01), Kelly
patent: 3455587 (1969-07-01), Gallois
patent: 3719476 (1973-03-01), Tanczyn
patent: 3772005 (1973-11-01), DE Barbadillo

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