Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1984-09-13
1987-09-08
Braun, Leslie
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74867, 74868, B60K 4116
Patent
active
046915966
ABSTRACT:
An automatic transmission includes a mechanical transmission mechanism coupled to a fluid coupling such as a torque converter. The mechanical transmission mechanism has several power trains and several friction engagement mechanisms. By selective supply of actuating fluid pressure to selective ones of the friction engagement mechanisms, various speed stages are provided. A control system for this transmission includes an assembly for producing a signal representative of engine output, an anti creep device for varying the actuating hydraulic fluid pressure for a one of the friction engagement mechanisms which is engaged for providing the lowest speed stage, according to the signal representative of engine output, from a low value when engine output is low upward as engine output increases, and can include an assembly for inhibiting the action of the anti creep device so as to cause that actuating hydraulic fluid pressure for that one of the friction engagement mechanisms to be at its high value when the mechanical transmission mechanism is providing one of its speed stages higher than the lowest speed stage. Also, the control system can include a manually controllable assembly for, when so desired, inhibiting the action of the anti creep device so as to cause the actuating hydraulic fluid pressure for that one of the friction engagement mechanisms to be at its unaltered value.
REFERENCES:
patent: 3890856 (1975-06-01), Miyauchi et al.
patent: 4313353 (1982-02-01), Honig
patent: 4476745 (1984-10-01), Moan
patent: 4478108 (1984-10-01), Nishimura et al.
patent: 4501173 (1985-02-01), Honig
patent: 4513638 (1985-04-01), Nishikawa et al.
patent: 4513639 (1983-04-01), Hiramatsu
patent: 4526065 (1985-07-01), Rosen et al.
Nishikawa Masao
Sakurai Yoshimi
Braun Leslie
Honda Giken Kogyo Kabushiki Kaisha
Novais David
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