Multiple ratio overdrive transmission

Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position

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Details

74688, 74752C, 74867, 74763, F16H 4700, B60K 4122

Patent

active

043477658

ABSTRACT:
A multiple ratio automotive vehicle transmission having a hydrokinetic torque converter and a compound planetary gear unit that establish a plurality of underdrive ratios, a direct drive ratio and an overdrive ratio, the ratio changes from the first underdrive ratio to a second underdrive ratio from the second underdrive ratio to the direct drive ratio each being established by engagement by a single torque establishing device, brake means for controlling application and release of the torque establishing devices to effect transmission of reaction torque from a reaction element of the gearing to a stationary portion of the mechanism, said controlling means being adapted to establish optimum shift points during ratio changes regardless of the magnitude of the torque being delivered at the instant a ratio shift occurs.

REFERENCES:
patent: 3000230 (1961-09-01), Froslie
patent: 3314307 (1967-04-01), Egbert
patent: 3491617 (1970-01-01), Konrad
patent: 3497043 (1970-02-01), Leonard
patent: 3559669 (1971-02-01), Dach
patent: 3656373 (1972-04-01), Shimosaki
patent: 3670599 (1972-06-01), Nagamatsu
patent: 4008630 (1977-02-01), Murakami et al.
patent: 4090417 (1978-05-01), Burcz et al.
patent: 4106369 (1978-08-01), Taga
patent: 4125038 (1978-11-01), Hiramatsu

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