Mower hydraulic leak detection system
AssigneeDeere & Company
InventorsPaul R. Heide, Bradley P. Aldridge, Brent G. Rinholm, David A. Straka
Life of this patent
Estimating the term…
Abstract
A hydraulic leak detection system includes a leak detection switch responsive to a level of hydraulic fluid in a tank used by a hydraulic mowing circuit and a lift and lower circuit of a grass mowing machine. The system includes a controller that activates a warning indicator if the leak detection switch indicates the level of hydraulic fluid in the tank is low, but allows the hydraulic mowing circuit and the lift and lower circuit to continue operating until the lift and lower circuit reaches a fully raised position. A solenoid valve may control the level of hydraulic fluid in the tank based on temperature of the hydraulic fluid.
Claims9
A hydraulic leak detection system, comprising:
- a vehicle controller electrically connected to a leak detection switch, a warning device, a hydraulic mowing circuit, and a lift and lower circuit for a plurality of grass cutting units;
- the vehicle controller configured to receive a signal if the leak detection switch detects a hydraulic fluid level is low, activate the warning device in response to the signal, allow operation of the hydraulic mowing circuit until the plurality of grass cutting units are fully raised by the lift and lower circuit, and then stop the hydraulic mowing circuit and block the lift and lower circuit from lowering the grass cutting units.
A hydraulic leak detection system, comprising:
- a leak detection switch responsive to a level of hydraulic fluid in a tank used by a hydraulic mowing circuit and a lift and lower circuit of a grass mowing machine;
- and
- a controller connected to the leak detection switch, a warning indicator, the hydraulic mowing circuit, and the lift and lower circuit;
- the controller configured to activate the warning indicator if the leak detection switch indicates the level of hydraulic fluid in the tank is low, allow the hydraulic mowing circuit and the lift and lower circuit to continue operating until the lift and lower circuit reaches a fully raised position, and disable the hydraulic mowing and the lift and lower circuits thereafter.
Dependencies are inferred from the claim text.