Adjustable transmission

Details Adjustable transmission Adjustable transmission

1988-02-26

1989-08-15

Diehl, Dwight G.

Machine element or mechanism

Gearing

In series plural interchangeably locked nonplanetary units

74190, 74796, 384536, F16H 3702

Patent

active

048563749

ABSTRACT:
In known combinations of a planetary gear transmission with a continuously variable friction drive transmission, unsatisfactory accuracy in operation and excessive overall dimensions are found to be disadvantageous.
The transmission according to the invention comprises a planetary gear transmission (11) operatively connected to a continuously variable friction drive transmission (12) with spherical rolling members (19).
The transmission according to the invention is finely or infinitesimally adjustable over a wide range of positive or negative transmission ratios and particularly suitable for employ in a closed control system.

REFERENCES:
patent: 2803507 (1957-08-01), Mempel et al.
patent: 3420122 (1969-01-01), Okabe
patent: 3504574 (1970-04-01), Okabe
patent: 4089569 (1978-05-01), Rempel
patent: 4424726 (1984-01-01), Galbraith
patent: 4489992 (1984-12-01), Brandenstein et al.
patent: 4592247 (1986-06-01), Mutschler
patent: 4593574 (1986-06-01), Sinn et al.
patent: 4667525 (1987-05-01), Schottler
patent: 4693134 (1987-09-01), Kraus
patent: 4718781 (1988-01-01), Gerard

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