Machine element or mechanism – Gearing – With fluid drive
Reexamination Certificate
2007-11-20
2007-11-20
Wright, Dirk (Department: 3681)
Machine element or mechanism
Gearing
With fluid drive
Reexamination Certificate
active
11034297
ABSTRACT:
A method of reducing speed in a hydrostatic drive work machine, and a hydrostatic drive work machine are provided. The method includes the steps of retarding the work machine by at least one of, upstroking a variable displacement hydraulic motor thereof, and downstroking a variable displacement pump coupled with the motor. An offgoing clutch pressure is dropped after each of the motor and pump displacements reaches a predetermined point. The steps of slowing the work machine are carried out by adjusting the respective displacements at rates based on a predetermined acceleration limit and/or a predetermined jerk limit of the work machine. The hydrostatic drive work machine further includes an electronic control module having a control algorithm recorded thereon for to neutral.
REFERENCES:
patent: 4193323 (1980-03-01), Bubula et al.
patent: 5435131 (1995-07-01), Hausman et al.
patent: 5529546 (1996-06-01), Ishino et al.
patent: 5624339 (1997-04-01), Coutant et al.
patent: 5784883 (1998-07-01), Ohkura et al.
patent: 5996343 (1999-12-01), Kuras
patent: 6519937 (2003-02-01), Nanri et al.
patent: 6988571 (2006-01-01), Okamoto et al.
patent: 1053434 (1967-01-01), None
patent: 1285543 (1972-08-01), None
Caterpillar Inc.
Liell & McNeil
LandOfFree
Method of slowing a hydrostatic drive work machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of slowing a hydrostatic drive work machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of slowing a hydrostatic drive work machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3809577