Automatic transmission

Details Automatic transmission Automatic transmission

1990-11-13

1993-04-20

Lorence, Richard M.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

475278, 475284, B60K 4106

Patent

active

052032345

ABSTRACT:
An automatic transmission which includes a device for selecting and temporarily setting such one of other speed stages, if any, between a present speed stage and a target speed stage as can have a small number of fluctuating revolutions of rotary members of planetary gear sets of the automatic transmission and two or less frictional engagement elements to be switched.

REFERENCES:
patent: 4733580 (1988-03-01), Kubo et al.
patent: 4742733 (1988-05-01), Schreiner
patent: 4793216 (1988-12-01), Hiramatsu et al.
patent: 4823643 (1989-04-01), Koshizawa
patent: 4963124 (1990-10-01), Takahashi et al.
patent: 4989477 (1991-02-01), Hunter et al.
patent: 5007887 (1991-04-01), Asada
patent: 5030187 (1991-07-01), Asada

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