Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent
1976-09-20
1978-05-23
Herrmann, Allan D.
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
180 648, G05G 900
Patent
active
040904113
ABSTRACT:
A skid-steered tractor vehicle is driven by right and left hydrostatic transmissions having separate steering levers, one for each transmission. A centering device acting directly on the transmission controls is longitudinally shiftable against the force of a spring in response to pivotal movement of either steering lever from a neutral or idle position for returning the steering lever upon release.
Also, there is a second pivotal mounting for one or both steering levers in a plane at right angles to the pivot axis of the levers for controlling auxiliary functions without interfering with the steering movements of the levers.
REFERENCES:
patent: 3605519 (1971-09-01), Heggen
patent: 3741031 (1973-06-01), Schwerdtfeger
patent: 3811336 (1974-05-01), Pulskamp
patent: 4027547 (1977-06-01), Rahman et al.
Albright Larry E.
Bauer James J.
Cramton Earl W.
Clark Equipment Company
Herrmann Allan D.
Thibault Harry G.
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