Machine element or mechanism – Control lever and linkage systems – Multiple controlling elements for single controlled element
Patent
1980-06-27
1982-08-31
Herrmann, Allan D.
Machine element or mechanism
Control lever and linkage systems
Multiple controlling elements for single controlled element
G05G 1100, G05G 114
Patent
active
043466176
ABSTRACT:
A drive control is disclosed which is particularly useful for machines having a hydrostatic transmission or ground drive pump, such as a tractor. A shift assembly controls the input to the hydrostatic transmission, and it includes a shift lever which is movable by a bellcrank mechanism in opposite directions from a neutral position into forward or reverse. The drive control further includes a rocking foot pedal which is connected by an actuating linkage to both the shift lever and the hydrostatic transmission. The desired direction of operation is set with the shift assembly, and the speed of movement in the selected direction is proportional to the amount the foot pedal is depressed. The foot pedal assembly includes a heel tab actuator which can be used as a manual override for the purpose of braking by bringing the hydrostatic transmission back to neutral while maintaining the transmission in the selected directional position. An automatic override mechanism is also provided such that when the foot pedal is released, for any reason, the automatic override mechanism returns the hydrostatic transmission to neutral without affecting the directional position setting. A further feature of the invention resides in the selector plate for directional control which includes a projection for actuating a neutral start switch.
REFERENCES:
patent: 3316773 (1967-05-01), Findlay
patent: 3541878 (1970-11-01), Haffner
patent: 4040306 (1977-08-01), Jensen
patent: 4217789 (1980-08-01), Larson
patent: 4237752 (1980-12-01), Hildebrecht
Lindstrom Edgar K.
Schroeder Philip W.
Herrmann Allan D.
J. I. Case Company
LandOfFree
Ground drive control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ground drive control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground drive control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2179915