Patents Represented by Attorney Nate F. Marshall, O'Toole, Gerstein, Murray & Borun Scarpelli

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  • Fuel injection control valve
    Patent number: 5407131
    Abstract: A control valve assembly for a fuel injector includes a valve seat with fluid inlet and fluid outlet and a flat seating surface. A poppet valve has a concave end portion with knife edge for sealingly engaging the flat seating surface on the valve seat. The poppet valve is operated to close by a solenoid coil and is opened and maintained open by a return spring or a permanent magnet. Faster valve closing and faster valve opening is obtained.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: April 18, 1995
    Assignee: Caterpillar Inc.
    Inventors: Dale C. Maley, Oded E. Sturman, Matthew S. Touvelle