Cnh America LLC

Douglas R Otto

Robert L Fackler

Kenneth W McLean

Charles H Hoffman

Richard Paul Strosser

Philip J Ehrhart

Donald L Osborne

David Michael DeChristopher

David G Lutz

Michael L Bandi

Zachary Scmook

Dennis L Coates

Sean P Kopp

Stephen V Paulin

A control system is provided to control the rate of pressure rise in a hydraulic lift and flotation system. When a hydraulic cylinder of the hydraulic lift and flotation system is to be adjusted, the pressure in the hydraulic lift and flotation system has to be increased to a predetermined pressure controlled by a relief valve before the hydraulic cylinder can be operated. The unload valve of the hydraulic lift and flotation system can be closed in a controlled or regulated manner in order to control the rate at which pressure rises in the hydraulic lift and flotation system.

Pressure control system for a hydraulic lift and flotation system

A system and apparatus for controlling height of a header of a work machine such as an agricultural windrowing machine or a harvesting machine, which includes height control cylinders jointly or individually operable for raising or lowering the opposite ends of a header to achieve a desired overall height or angle of tilt in relation to the surface of a field or pasture to be cut, and which allow the header to be raised, and lowered to the previously selected cut height, without changing the lengths of the cylinders, so as to be usable in combination with an optional header lift and/or float system.

Header height control system and apparatus

A method and apparatus for automatically controlling a header lift system of an agricultural harvesting machine, particularly a windrower, to put a header of the machine into a transport mode wherein the header is raised to an elevated transport position, under certain specific conditions. Such conditions can include, but are not limited to, the machine operating in a high-speed range, the header not operating, the speed of the machine being above a predetermined level, and the last inputted control command being a header raise command. When in the transport mode, the lift system can also be operated in a float mode. Further, the header lift system can be returned to a normal mode when certain criteria are present for doing so.

Method and apparatus to put a windrower header in the transport mode under specified conditions

A control system for the header flotation and lift hydraulics of an agricultural windrower that manages the effective and efficient removal of the header.

System for removal of agricultural header

A system and method for managing the electrical control system of a header flotation and lift system of an agricultural harvesting machine, particularly one using only once fluid cylinder in connection with each respective side of the header, which system and method, in addition to executing header raise and lower commands, provides several automatically executable operating modes for the flotation and lift system, including a wake-up mode; a normal mode, which can include float; a charge accumulator mode; a transport mode; and a header remove mode, and the ability to seamlessly and easily transition between the modes.

Method for managing the electrical control system of a windrower header flotation and lift system

A scraper device for connection to the knife connector in a rotary cutterhead and for rotation therewith that prevents debris from accumulating in the space between the knife and the cutterhead housing and which also dislodges accumulated debris from areas adjacent to the space between the knife and the cutterhead housing.

Device for reducing debris accumulation in a rotary cutterhead

System and method for managing the electrical control system of a windrower header flotation and lift system

A non-contact neutral sensing apparatus with directional feedback in a vehicle directional control system for an agricultural or construction vehicle.

Non-contact neutral sensing with directional feedback

An adjustable hydrostatic control system that adjusts in length to locate mutual neutral locations while transmitting the necessary torque through mating sliding spines.

Adjustable hydrostatic control system

A hydraulic lift/flotation system for the header of a crop harvesting machine wherein each side of the header is supported by a single cylinder, which performs both the flotation and lift functions. For even lifting and flotation of an unbalanced header, each cylinder has its own control valve, pump, and accumulator. The operator sets the desired flotation force by actuating rocker switches; one switch position allows hydraulic oil to enter an accumulator to reduce header contact force with the ground. The other position allows oil to exit the accumulator to increase header contact force with the ground. To evenly float an unbalanced header, separate switches adjust each side independently. Once the flotation forces are set, the control valves will return to this preset flotation condition whenever float mode is selected, regardless of subsequent header lift and lower operations.

Independent hydraulic header lift and flotation system

A neutral start interlock for a hydrostatic drive system that uses potentiometers to electronically monitor at least the position of the hydrostatic displacement control such that the engine will not start unless such control is in the neutral position.

Neutral start interlock

A hydraulic lift/flotation system for the header of a crop harvesting machine wherein each side of the header is supported by a single cylinder, which performs both the flotation and lift functions. To accommodate unbalanced headers (center of gravity not centered between the lift arms), hydraulic oil is sent to the return side of the lift cylinder on the lighter side of the header, thus resulting in even raising, lowering and float.

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Ephrata, PA, United States of America

Douglas R Otto