Patent ID: 6062331
Filing Date: 2000-05-16
Classification: B60K,E02F

Abstract:
A control system for controlling the flow of hydraulic fluid within an auxiliary hydraulic circuit associated with a work machine wherein the work machine includes an implement system and an auxiliary hydraulic circuit for controlling the operation of certain attachments or tools which are mountable to the implement system, said auxiliary hydraulic control system comprising:a first switch actuatable to control the direction of fluid flow within the auxiliary hydraulic circuit, said first switch being actuatable in a first manner to output a signal indicative of directing flow in a first direction within the auxiliary hydraulic circuit and said first switch being actuatable in a second manner to output a signal indicative of directing flow in a second direction within the auxiliary hydraulic circuit, said first switch outputting said signals for directing flow in one of said first and second directions for as long as said switch is held in its actuated position;a second switch actuatable to output a signal indicative of providing continuous flow in one of said first and second directions within the auxiliary hydraulic circuit based upon the direction of flow selected by actuation of said first switch;an electronic controller coupled to said first and second switches for receiving signals therefrom, said controller being operable to receive a signal corresponding to said first switch being actuated in one of said first and second manners, a signal corresponding to said second switch being actuated, and a signal corresponding to when said first switch has been released;said controller outputting a signal to initiate continuous flow within the auxiliary hydraulic circuit in one of said first and second directions when said controller receives the signal corresponding to said first switch being actuated to direct flow in one of said first and second directions, the signal corresponding to said second switch being actuated to provide continuous flow in the selected direction, and the signal corresponding to said first switch being released within a predetermined period of time after said second switch has been actuated.