Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1989-02-21
1992-01-07
Braun, Leslie A.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74869, F16H 5970
Patent
active
050780280
ABSTRACT:
A primary regulator valve has a cutback port which regulates a line pressure to increase, at the first speed of D range, a throttle pressure is applied to the cutback port through a cutback valve. The primary regulator valve sets the line pressure from a line pressure port higher. The cutback valve has a spool which is compressed in one direction. A first control chamber which is connected to a hydraulic servo (for example, a second brake hydraulic servo) which hydraulic pressure is applied at more than the second speed is formed against the pressing direction, a second control chamber which is connected to a hydraulic servo (for example, a second-coast brake hydraulic servo) to limit a coasting condition of the second speed is so formed as to follow the above pressing direction. At the second speed of second range, the cutback valve, as the first speed of D range, the throttle pressure is applied to the cutback port. Furthermore, the primary regulator valve has a control chamber which regulates the line pressure to decrease. A pressure control valve (for example, a linear solenoid valve to control a lock-up clutch) is connected to the control chamber to reduce the line pressure when a manual valve is selected from N range to D or R range.
REFERENCES:
patent: 3703110 (1972-11-01), Uozumi et al.
patent: 3714836 (1973-02-01), Pierce, Jr. et al.
patent: 4314488 (1982-02-01), Lauven
patent: 4325271 (1982-04-01), Iwanaga et al.
patent: 4432255 (1984-02-01), Borman et al.
patent: 4563918 (1986-01-01), Sugano
patent: 4727773 (1988-03-01), Sumiya et al.
patent: 4790217 (1988-11-01), Kawano et al.
patent: 4870877 (1989-10-01), Hasegawa et al.
patent: 4945482 (1990-06-01), Nishikawa et al.
Ishikawa Kaunori
Iwatsuki Kunihiro
Kashihara Yuji
Kondo Tadashi
Taniguchi Hiroji
Aisin Aw Co. Ltd.
Braun Leslie A.
Ta Khoi Q.
Toyota Jidosha & Kabushiki Kaisha
LandOfFree
Hydraulic control device with cutback valve for an automatic tra does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic control device with cutback valve for an automatic tra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic control device with cutback valve for an automatic tra will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-813604