Traction-drive transmission

Details Traction-drive transmission Traction-drive transmission

1978-06-29

1980-01-29

Chandler, Lance

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

74194, 74690, F16H 1508, F16H 3706

Patent

active

041855094

ABSTRACT:
The invention contemplates an improved mechanical traction drive providing a single control whereby a desired range of speed ratios between input and output shafts is selectively available, without requiring clutch connection to the power source, such as an internal-combustion engine. The transmission involves a combination of completely mechanical friction-roller and meshing-gear planetary systems which are connected at all times, whether the single control is operated to call for a forward drive, a stop or a reverse drive of the output shaft. For the particular disclosed forms, provision is made for automatic downshifting reaction to increasing load, and major axial-reaction forces are self-contained by rotating mechanism, thus (a) avoiding substantial axial force components on main-bearings of the mechanism, and (b) reducing to very small magnitudes the requisite force for selective control actuation.

REFERENCES:
patent: 2560180 (1951-07-01), Lesueur
patent: 2962909 (1960-12-01), Jaquith et al.
patent: 3087348 (1963-04-01), Kraus
patent: 3153938 (1964-10-01), Perry
patent: 3165937 (1965-01-01), Tomaszek
patent: 3412622 (1968-11-01), Rhodes et al.
patent: 3486391 (1969-12-01), Kraus
patent: 3820408 (1974-06-01), Louis
patent: 3933054 (1976-01-01), Iseman
patent: 3986414 (1976-10-01), Peterson et al.
patent: 4098146 (1978-07-01), McLarty

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