Tapered worm

Details Tapered worm Tapered worm

1986-01-16

1988-04-26

Kundrat, Andrew V.

Machine element or mechanism

Gearing

Directly cooperating gears

74458, F16H 116

Patent

active

047396717

ABSTRACT:
A worm and meshing worm gear are provided. The worm has oppositely tapered frustoconical portions at either end thereof. The angle of taper of the two tapered portions is the same, but in different directions. The angle of taper is substantially equal to 360 degrees divided by the number of teeth in the worm gear. Contact between the worm and gear occurs over a plurality of teeth as contrasted with substantially only one tooth in the conventional cylindrical worm. The worm is capable of being formed by thread rolling.

REFERENCES:
patent: 486318 (1892-11-01), Albro
patent: 1759968 (1930-05-01), Trbojevich
patent: 2273784 (1942-02-01), Kahl
patent: 2369599 (1945-02-01), Morrison
patent: 2868031 (1959-01-01), Schumb
patent: 3006211 (1961-10-01), Mueller
patent: 3106103 (1963-10-01), Smith
patent: 3402619 (1968-09-01), Thurley et al.
patent: 4047449 (1977-09-01), Popov
patent: 4220053 (1980-09-01), Barlow et al.

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