Power take-off unit with selectively engaged brake

Details Power take-off unit with selectively engaged brake Power take-off unit with selectively engaged brake

1996-12-30

2000-11-07

Marmor, Charles A.

192 clutches and power-stop control

Clutch and brake

Sliding operation

192 12C, 74 1586, F16D 6704

Patent

active

061422746

ABSTRACT:
A power take-off unit includes a hydraulically actuated brake assembly which is automatically engaged when a hydraulically actuated clutch assembly is disengaged, and further which is automatically disengaged when the clutch assembly is engaged. The power take-off unit includes a housing which contains an input gear and an output shaft. The input gear is adapted to be connected to an engine or transmission of a vehicle or other source of rotational power so as to be rotatably driven in a conventional manner. The output shaft is adapted to be connected to rotatably driven accessory, such as a hydraulic pump. The power take-off unit includes a clutch assembly for selectively providing a driving connection between the input gear and the output shaft and a brake assembly for selectively exerting a braking force to retard rotation of the output shaft. When pressurized fluid is provided from a source to a clutch chamber, the clutch assembly is engaged to cause the output shaft to be rotatably driven by the input gear. Simultaneously, the pressurized fluid is fed to a brake chamber to disengage the brake assembly and permit free rotation of the output shaft. When pressurized fluid is not provided from the source to the clutch chamber, the clutch assembly is disengaged to prevent the output shaft from being rotatably driven by the input gear. At the same time, the lack of pressurized fluid in the brake chamber to engages the brake assembly and exert the braking force to retard rotation of the output shaft.

REFERENCES:
patent: 2402052 (1946-06-01), Johansen
patent: 3224538 (1965-12-01), Ward
patent: 3441114 (1969-04-01), Pensa
patent: 3507372 (1970-04-01), Gilbertson et al.
patent: 3669229 (1972-06-01), Ronayne et al.
patent: 3698524 (1972-10-01), Schubert
patent: 3770085 (1973-11-01), Cottingham
patent: 3805931 (1974-04-01), Portmann
patent: 3872954 (1975-03-01), Nordstrom et al.
patent: 4066157 (1978-01-01), Gibbs
patent: 4275607 (1981-06-01), Snoy
patent: 4399715 (1983-08-01), Dziuba et al.
patent: 4613024 (1986-09-01), Irikura et al.
patent: 5415257 (1995-05-01), Shimamura et al.
patent: 5437355 (1995-08-01), Takagi et al.
patent: 5542306 (1996-08-01), Fernandez
patent: 5573092 (1996-11-01), Gabilondo
patent: 5806641 (1998-09-01), Sommer
patent: 5873444 (1999-02-01), Kozhevnikov et al.
patent: 5921361 (1999-07-01), Sommer

Affiliated with

Also associated with

Rating

Power take-off unit with selectively engaged brake does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power take-off unit with selectively engaged brake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power take-off unit with selectively engaged brake will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1632296