Machine element or mechanism – Gearing – Interchangeably locked
Reexamination Certificate
2007-02-16
2009-10-20
Le, David D. (Department: 3655)
Machine element or mechanism
Gearing
Interchangeably locked
C074S337500, C074S473110
Reexamination Certificate
active
07603923
ABSTRACT:
Described herein is a hydraulic servo for a gear change provided with a control shaft; the servo has: a frame; a first hydraulic actuator, which is carried by the frame and has two first chambers, which are alternatively filled with a pressurized fluid for displacing the control shaft axially in the two directions; two first solenoid valves, which control filling of the two first chambers; a second hydraulic actuator, which is carried by the frame and has at least one second chamber that is filled with a pressurized fluid for rotating the control shaft about its central axis; a second solenoid valve, which controls filling of the second chamber; and a supporting body, which is fixed to the frame, houses the solenoid valves, and has inside it a series of hydraulic circuits, which connect the solenoid valves themselves both to the chambers of the actuators and to a supply of the pressurized fluid.
REFERENCES:
patent: 4653352 (1987-03-01), Nakao et al.
patent: 5473959 (1995-12-01), Lasoen
patent: 6102829 (2000-08-01), Muddell et al.
patent: 6422104 (2002-07-01), Kamiya
patent: 7464617 (2008-12-01), Baldascini et al.
patent: 2001/0037696 (2001-11-01), Meyer et al.
patent: 20 29 338 (1971-05-01), None
patent: 28 55 086 (1980-02-01), None
patent: 0 271 234 (1988-06-01), None
patent: 0 541 035 (1993-05-01), None
patent: 1 544 492 (2005-06-01), None
patent: WO 01/51829 (2001-07-01), None
European Search Report, EP 06 42 5096, Jul. 31, 2006, 3 pp.
Giorgini Stefano
Lorenzoni Marcello
Mengoli Nerio
Le David D.
Magneti Marelli Powertrain S.p.A.
Myers Andras Sherman LLP
Sherman, Esq. Kenneth L.
LandOfFree
Hydraulic servo for a gear change 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 servo for a gear change, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic servo for a gear change will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4124176