Manual motion control override apparatus
AssigneeVermeer Manufacturing Company
InventorStephen D. Wright
Life of this patent
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Abstract
An override control system for a ground-supported machine. A hand lever is used to adjust the equilibrium position of a self-centering device which is interconnected to a drive system of the machine so that a principal ground speed of the machine is selected and set by adjustment of the hand lever. A second control lever is connected to the drive system through the self-centering device and is operable to adjust the speed and direction of motion of the machine away from that set by the hand lever. Upon release of the second control lever, the self-centering device returns the ground speed of the machine to the preselected principal value.
Claims16
An override control system for a ground traveling machine, comprising:
- (a) means for driving the machine in a forward and reverse direction over a first, high range of speeds and a second, low range of speeds;
- (b) first control means for said high and said low range of speeds operable to select and maintain a selected speed within said speed ranges;
- (c) second control means;
- (d) self-centering means operably connected to said second control means and said driving means, said second control means being operable to adjust the speed of the machine above and below said selected speed;
- and
- (e) said self-centering means operable to return the speed of the machine to said selected speed upon release of said second control means.
Dependencies are inferred from the claim text.