Patents by Inventor Stuart L. Neagle

Stuart L. Neagle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Hydraulic system for a work vehicle
    Patent number: 4898078
    Abstract: The present invention is directed to a hybrid hydraulic system for a work vehicle having both an open center hydraulic circuit and a close center hydraulic circuit. An internal combustion engine drives a fixed displacement pump and a variable displacement pump. The fixed displacement pump provides hydraulic fluid to the open center circuit which directs hydraulic fluid to a steering circuit and the working circuit through a priority valve. The variable displacement pump provides hydraulic fluid to the close center circuit which directs hydraulic fluid to a braking circuit and a pressure reduction circuit. The pressure reduction circuit directs hydraulic fluid to a pilot control system, a clutch cutoff and a differential lock out. Both pumps receive hydraulic fluid from a common sump and a common suction line. The braking circuit comprises two independent braking circuits.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: February 6, 1990
    Assignee: Deere & Company
    Inventors: Douglas M. Gage, Stuart L. Neagle
  • Hydraulic system for a work vehicle
    Patent number: 4809586
    Abstract: The present invention is directed to a hybrid hydraulic system for a work vehicle having both an open center hydraulic circuit and a close center hydraulic circuit. An internal combustion engine drives a fixed displacement pump and a variable displacement pump. The fixed displacement pump provides hydraulic fluid to the open center circuit which directs hydraulic fluid to a steering circuit and the working circuit through a priority valve. The variable displacement pump provides hydraulic fluid to the close center circuit which directs hydraulic fluid to a braking circuit and a pressure reduction circuit. The pressure reduction circuit directs hydraulic fluid to a pilot control system, a clutch cutoff and a differential lock out. Both pumps receive hydraulic fluid from a common sump and a common suction line. The braking circuit comprises two independent braking circuits.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: March 7, 1989
    Assignee: Deere & Company
    Inventors: Douglas M. Gage, Stuart L. Neagle
  • Adjustable armrest with integral vehicle controls
    Patent number: 4702520
    Abstract: An armrest including a pivotal forward section containing hand controls and an adjustable second section to align with the forward section.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: October 27, 1987
    Assignee: Deere & Company
    Inventors: Edwin L. Whisler, Frederick D. Griswold, Jr., Stuart L. Neagle