Hydraulic coupling for vehicle drivetrain

Details Hydraulic coupling for vehicle drivetrain Hydraulic coupling for vehicle drivetrain

1994-03-03

1996-07-16

Wright, Dirk

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Control of differential planetary gearing

F16H 4704

Patent

active

055362150

ABSTRACT:
A hydraulic coupling (32) includes a control valve (80) that controls pumping from a casing inlet port (58) by a hydraulic pump (48) through a casing outlet port (78) to control operation of a clutch (68) for coupling between two rotary members. The casing (34) is connected to one of the rotary members while a pumping component embodied by an impeller (50) is connected to the other rotary member and meshed with an internal ring gear (54) having one more tooth than the number of impeller teeth to provide sufficient pumping capacity so that the pump can act as a brake while still having relatively constant pumping pressure. The control valve (80) includes a by metallic valve element (82) mounted within a recess (98) to provide accurate temperature compensated control of its closure when the pumped hydraulic fluid reaches a predetermined pressure corresponding to a predetermined extent of relative rotation between the two drivetrain members. The outlet port (78) is disclosed as extending through an actuating piston (72) of the clutch in certain embodiments and also through the casing back to the hydraulic pump in another embodiment to provide a supercharged circuit.

REFERENCES:
patent: 2004929 (1935-06-01), Centervall
patent: 2026777 (1936-01-01), Dumble
patent: 2775141 (1956-12-01), Ronning
patent: 2922319 (1960-01-01), Burner
patent: 3230795 (1966-01-01), Mueller
patent: 3251244 (1966-05-01), Nickell
patent: 3299550 (1966-01-01), Nickell
patent: 3350961 (1967-11-01), Dodge
patent: 3361008 (1968-01-01), Fallon
patent: 3393582 (1968-07-01), Mueller
patent: 3407599 (1968-10-01), Ulbricht
patent: 3490312 (1970-01-01), Seitz et al.
patent: 3686976 (1972-08-01), Philippi
patent: 3724289 (1973-04-01), Kennicutt
patent: 3748928 (1973-07-01), Shiber
patent: 3752280 (1973-08-01), Cheek
patent: 3835730 (1974-09-01), Pemberton
patent: 3894446 (1975-07-01), Snoy et al.
patent: 3923113 (1975-12-01), Pagdin
patent: 3987689 (1976-10-01), Engle
patent: 4012968 (1977-03-01), Kelbel
patent: 4041804 (1977-08-01), Clark
patent: 4258588 (1981-03-01), Yum
patent: 4263824 (1981-04-01), Mueller
patent: 4272993 (1981-06-01), Kopich
patent: 4388196 (1983-06-01), Lucia
patent: 4445400 (1984-05-01), Sullivan et al.
patent: 4493387 (1985-01-01), Lake et al.
patent: 4548096 (1985-10-01), Giocastro et al.
patent: 4601359 (1986-07-01), Weismann et al.
patent: 4606428 (1986-08-01), Giere
patent: 4630505 (1986-12-01), Williamson
patent: 4644822 (1987-02-01), Batchelor
patent: 4650028 (1987-03-01), Eastman et al.
patent: 4679463 (1987-07-01), Ozaki et al.
patent: 4714129 (1987-12-01), Mueller
patent: 4719998 (1988-01-01), Hiramatsu et al.
patent: 4727966 (1988-03-01), Hiramatsu et al.
patent: 4730514 (1988-03-01), Shikata et al.
patent: 4732052 (1988-03-01), Dewald
patent: 4821604 (1989-04-01), Asano
patent: 4867012 (1989-09-01), McGarraugh
patent: 4876921 (1989-10-01), Yasui et al.
patent: 4884470 (1989-12-01), Onoue
patent: 4905808 (1990-03-01), Tomita et al.
patent: 4909371 (1990-03-01), Okamoto et al.
patent: 4919006 (1990-04-01), Willett et al.
patent: 4957473 (1990-09-01), Takemura et al.
patent: 4960011 (1990-10-01), Asano
patent: 4966268 (1990-10-01), Asano et al.
patent: 4974471 (1990-12-01), McGarraugh
patent: 5005131 (1991-04-01), Imaseki et al.
patent: 5087228 (1992-02-01), Johansson
patent: 5189930 (1993-03-01), Kameda
patent: 5310388 (1994-05-01), Okcuoglu et al.
patent: 5320586 (1994-06-01), Baxter, Jr.

Affiliated with

Also associated with

Rating

Hydraulic coupling for vehicle drivetrain 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 coupling for vehicle drivetrain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic coupling for vehicle drivetrain will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1781145