Patents by Inventor David Sprinkle

David Sprinkle 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).

  • Publication number: 20060021338
    Abstract: Hydraulic flow to tractor attachments such as a sweeper, snow thrower, breaker, auger or cold planer may be increased by diverting pressurized hydraulic fluid from the auxiliary pump. A diverter valve between the auxiliary pump and the auxiliary circuit of the loader hydraulic system may direct flow to either the backhoe hydraulic system, the rockshaft hydraulic system, or the auxiliary circuit of the loader hydraulic system. The additional flow from the auxiliary pump is provided at a mid-inlet position and is not available to the loader boom or bucket circuits, to preserve tractive horsepower needed during loader work.
    Type: Application
    Filed: July 30, 2004
    Publication date: February 2, 2006
    Inventors: David Sprinkle, Daniel Goodman, Philip Fernandez
  • Publication number: 20050115760
    Abstract: A speed control system for a utility vehicle, the vehicle having a forward-facing driving position and a rearward-facing seat, includes a creep control system for moving the utility vehicle, controlled from the rearward-facing seat. The vehicle includes a speed-controllable transmission operable to output power to drive a wheel. The vehicle includes a creep speed control actuator located adjacent to the rearward-facing seat and a creep speed control system operatively connected to the actuator and to the transmission. The system converts movement of the actuator to speed change of the transmission. The transmission can be a mechanically or electronically controlled hydrostatic transmission, or an electronically controlled reverser transmission.
    Type: Application
    Filed: December 22, 2004
    Publication date: June 2, 2005
    Inventors: David Sprinkle, John Sundberg