Machine element or mechanism – Elements – Gear casings
Patent
1985-05-28
1987-01-27
Braun, Leslie A.
Machine element or mechanism
Elements
Gear casings
74740, F16H 3706, F16H 3700
Patent
active
046386874
ABSTRACT:
A transmission of the two-regime, toroidal race rolling traction type. The output disc of the variator is supported by a rotary thrust bearing including rollers mounted in a rotatable cage. In the second regime, which is in action during the higher-speed ranges of forward drive, the output disc is connected to the final drive through an epicyclic. In the first regime, in action during the whole of reverse drive and the lower-speed ranges of forward drive, the cage of the thrust bearing is connected to the final drive by way of a one-way clutch and a lock arranged in parallel: in the reverse part of the regime the lock is engaged to prevent the clutch overriding, and in the remaining forward part of the regime the lock is open and the clutch operates directly because of the reversal of direction. The cage may contain an array of single rollers symmetrically arranged, each rotatable about an axis which intersects the axis of the cage itself obliquely. Alternatively the roller units within the cage may rotate about axes which intersect the cage axis at right angles, but each roller unit may comprise a stack of individual rollers capable of rotating at different speeds so as to accommodate the different radii at which they bear against their co-operating thrust races.
REFERENCES:
patent: 2283759 (1942-05-01), Pollard
patent: 2646696 (1953-07-01), Kepes
patent: 3406597 (1968-10-01), De Brie Perry
patent: 3494224 (1970-02-01), Fellows et al.
patent: 3620101 (1971-11-01), Abbott et al.
patent: 3684065 (1972-08-01), Scheiter
patent: 3713353 (1973-01-01), Scheiter
patent: 3822610 (1974-07-01), Erban
patent: 3823613 (1974-07-01), Abbott
Braun Leslie A.
National Research Development Corporation
Wright Dirk
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