Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid controlled mechanical clutch or brake
Patent
1993-01-07
1994-07-12
Braun, Leslie A.
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid controlled mechanical clutch or brake
137593, 13762569, 475116, F15B 13044
Patent
active
053278003
ABSTRACT:
A manual valve for an automotive transmission includes a valve spool defining lands having a relatively large diameter and a land having a relatively smaller diameter. Regulated line pressure supplied to the manual valve is selectively connected to and disconnected from passages that are pressurized when the gear selector is moved among a reverse drive range, overdrive range, and several manual ranges. Friction elements, supplied with hydraulic pressure through these passages, are engaged and disengaged to produce the various gear ratios of the transmission. When each friction element is disengaged, it is vented through an exhaust passage extending from the manual valve to a point that is vertically high in relation to the other passages of the circuit.
REFERENCES:
patent: 3426997 (1969-02-01), Vanderlaan
patent: 3473566 (1969-10-01), Peppel
patent: 3589401 (1971-06-01), Harding
patent: 3785614 (1974-01-01), Enomoto
patent: 4009730 (1977-03-01), Starling
patent: 4056991 (1977-11-01), Sakai et al.
patent: 4161895 (1979-07-01), Ushijima et al.
patent: 4827981 (1989-05-01), Livecchi et al.
patent: 4856381 (1989-08-01), Funahashi et al.
patent: 4903551 (1990-02-01), Hiramatsu et al.
patent: 4919012 (1990-04-01), Bolz
patent: 4943921 (1990-07-01), Baltusis et al.
patent: 5247965 (1993-09-01), Oka et al.
Braun Leslie A.
Ford Motor Company
May Roger L.
McKenzie Frank G.
Ta Khoi Q.
LandOfFree
System using vertical exhaust passage for maintaining primed con does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System using vertical exhaust passage for maintaining primed con, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System using vertical exhaust passage for maintaining primed con will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-389071