Tapered worm

Details Tapered worm Tapered worm

1984-11-05

1986-12-23

Dorner, Kenneth J.

Machine element or mechanism

Gearing

Directly cooperating gears

74458, F16H 116, F16H 120, F16H 5517, F16H 5522

Patent

active

046304975

ABSTRACT:
A worm and meshing worm gear are provided. The worm has a central cylindrical portion, and tapered 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 three times the number of teeth in which contact is obtained with a conventional cylindrical worm. The worm is capable of being formed by thread rolling.

REFERENCES:
patent: 1759968 (1930-05-01), Trbojevich
patent: 2868031 (1959-01-01), Schumb
patent: 3106103 (1963-10-01), Smith
patent: 3386305 (1968-06-01), Wildhaber
patent: 3398590 (1968-08-01), Campbell et al.
patent: 3435506 (1969-04-01), Schmidt
patent: 3608394 (1971-09-01), Ishikawa
patent: 4220053 (1980-09-01), Barlow et al.

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