Bicycle handlebar stem

Details Bicycle handlebar stem Bicycle handlebar stem

1984-06-04

1985-08-27

Kundrat, Andrew V.

Joints and connections

Rod to member to side, e.g., plate, rod side, etc.

Arcuate or multiplanar side

403233, 403271, 403374, 2281736, 745511, F16B 708

Patent

active

045375259

ABSTRACT:
A bicycle handlebar drop stem is disclosed wherein the step is manufactured from a single piece sheet metal blank. The blank is configured by a series of dies such that it is formed into a cylindrical post having an integral neck section and handlebar receiving head. The neck and head extend downwardly at an acute angle to the cylindrical post. To accommodate this downward angulation of the neck relative to the post, the blank is notched at the interface of the neck and cylindrical post sections of the blank and depending flanges of the configured stem are welded to the cylindrical post.

REFERENCES:
patent: 2487661 (1949-11-01), McCauley, Jr.
patent: 2505648 (1950-04-01), Pawsat
patent: 3385615 (1968-05-01), Hussey
patent: 3605248 (1971-09-01), Yoshikawa
patent: 4363436 (1982-12-01), Evans et al.

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