Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1992-08-17
1993-12-14
Braun, Leslie A.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74866, B60K 4106
Patent
active
052692043
ABSTRACT:
A hydraulic control system for a vehicular automatic transmission includes a first servomotor, actuated by hydraulic pressure from a hydraulic pressure source, for engaging or releasing frictional engagement elements of the transmission; a second servomotor, actuated by the hydraulic pressure, for applying an engine brake; a manual valve and a shift valve, both connected between the hydraulic pressure source and the first and second servomotors, for controlling the hydraulic pressure; a cut-off valve interposed in a line extending between the manual valve and the shift valve; a solenoid valve for controlling the cut-off valve; and an electronic controller for receiving as inputs vehicular running conditions and a gear-shift mode and for outputting solenoid signals to control the shift valve and the cut-off valve responsive to the inputs. The controller outputs a solenoid signal to the cut-off valve to control communication between the manual valve and the shift valve through the line.
REFERENCES:
patent: 4631982 (1986-12-01), Miki et al.
patent: 4727773 (1988-03-01), Sumiya et al.
patent: 4727774 (1988-03-01), Sumiya et al.
patent: 4987792 (1991-01-01), Mueller
patent: 5050459 (1991-09-01), Ishikawa et al.
Fukatsu Hironari
Imai Norio
Inuzuka Takeshi
Moroto Shuzo
Sakakibara Shiro
Aisin Aw Co. Ltd.
Braun Leslie A.
Wittels Daniel
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