Hydraulic diverting system for utility vehicle
AssigneeDeere & Company
InventorsDavid Laverne Sprinkle, Robert D. Cork
Life of this patent
Estimating the term…
Abstract
A hydraulic fluid diverting arrangement for a utility vehicle provides additional pressurized hydraulic fluid supply to an installed backhoe attachment by diverting hydraulic fluid from the unused rockshaft or three-point hitch of the utility vehicle. A solenoid operated valve manifold is switch actuated by contact from the backhoe during installation of the backhoe to the utility vehicle and diverts hydraulic fluid flow from rockshaft hydraulic cylinders to backhoe hydraulic cylinders. The system increases the available horsepower to the backhoe by using hydraulic fluid otherwise dedicated to the idle rockshaft.
Claims16
In a utility vehicle, a selection system for providing pressurized hydraulic fluid to a rockshaft hydraulic system and an implement hydraulic system, comprising:
- a diverter valve;
- a first pump hydraulically connected for providing a first flow of pressurized hydraulic fluid to said diverter valve, said diverter valve configured to control direction of said first flow to operate either a rockshaft hydraulic system, or an implement hydraulic system on the utility vehicle.
In a utility vehicle, a selection system for providing pressurized hydraulic fluid to a rockshaft hydraulic system and an implement hydraulic system, comprising:
- a diverter valve;
- a first pump hydraulically connected for providing a first flow of pressurized hydraulic fluid to said diverter valve, said diverter valve configured to control direction of said first flow to operate either a rockshaft hydraulic system, or an implement hydraulic system on the utility vehicle;
- wherein said rockshaft hydraulic system comprises at least one first hydraulic cylinder and said implement hydraulic system comprises at least one second hydraulic cylinder, and said diverter valve comprises a solenoid valve, and said selection system comprises a switch connected between a source of power and to said solenoid valve, changing the state of said switch changes the state of said solenoid valve to cause diversion of said first flow of pressurized hydraulic fluid from said at least one first hydraulic cylinder to said at least one second hydraulic cylinder;
- and
- wherein said implement comprises a backhoe attachment and said switch comprises a trigger mounted to said utility vehicle to be actuated by contact from said backhoe attachment during installation of said backhoe attachment to said utility vehicle.
A method of supplying pressurized hydraulic fluid to a rockshaft and to a backhoe on a utility vehicle, comprising the steps of:
- before a backhoe is installed onto the vehicle, supplying a first flow quantity of pressurized hydraulic fluid to at least one first hydraulic cylinder operating a rockshaft;
- and
- when the backhoe is installed onto the vehicle, automatically diverting the first flow quantity of pressurized hydraulic fluid to at least one second hydraulic cylinder operating the backhoe.
In a tractor, a selection system for providing pressurized hydraulic fluid to a hitch hydraulic system and a backhoe hydraulic system, comprising:
- a hitch having a hitch hydraulic system and a backhoe having a backhoe hydraulic system;
- a diverter valve;
- a first pump hydraulically connected for providing a first flow of pressurized hydraulic fluid to said diverter valve, said diverter valve configured to control direction of said first flow to operate either a hitch hydraulic system, or a backhoe hydraulic system on the tractor;
- wherein said hitch hydraulic system comprises at least one first hydraulic cylinder for adjusting an elevation of said hitch and said backhoe hydraulic system comprises at least one second hydraulic cylinder, and said diverter valve comprises a solenoid valve, and said selection system comprises a switch connected between a source of power and to said solenoid valve, changing the state of said switch changes the state of said solenoid valve to cause diversion of said first flow of pressurized hydraulic fluid from said at least one first hydraulic cylinder to said at least one second hydraulic cylinder;
- and
- wherein said backhoe comprises a backhoe attachment and said switch comprises a trigger mounted to said utility vehicle to be actuated by contact from said backhoe attachment during installation of said backhoe attachment to said tractor.
Dependencies are inferred from the claim text.