Patents by Inventor David Guetschow

David Guetschow 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).

  • Hydromechanical power management of fixed displacement boost pumps
    Patent number: 9404573
    Abstract: A hydraulic apparatus and a method of controlling the hydraulic apparatus are disclosed. The hydraulic apparatus includes a first pump having a first fixed displacement, a second pump having a second fixed displacement, and a diverter. The diverter includes a first diverter inlet port fluidly coupled to a discharge of the second pump, a first diverter outlet port fluidly coupled to a discharge of the first pump, and a second diverter outlet port fluidly coupled to a low pressure system, the low pressure system having a fluid pressure lower than a fluid pressure of the discharge of the first pump. The diverter is operable to selectively vary fluid communication between the first diverter inlet port and either the first diverter outlet port or the second diverter outlet port based on a reference pressure.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: August 2, 2016
    Assignee: Caterpillar Inc.
    Inventors: Timothy Hand, Ryan Harken, Robert Jackson, David Guetschow, Jeffrey Jones
  • Hydromechanical Power Management of Fixed Displacement Boost Pumps
    Publication number: 20140325971
    Abstract: A hydraulic apparatus and a method of controlling the hydraulic apparatus are disclosed. The hydraulic apparatus includes a first pump having a first fixed displacement, a second pump having a second fixed displacement, and a diverter. The diverter includes a first diverter inlet port fluidly coupled to a discharge of the second pump, a first diverter outlet port fluidly coupled to a discharge of the first pump, and a second diverter outlet port fluidly coupled to a low pressure system, the low pressure system having a fluid pressure lower than a fluid pressure of the discharge of the first pump. The diverter is operable to selectively vary fluid communication between the first diverter inlet port and either the first diverter outlet port or the second diverter outlet port based on a reference pressure.
    Type: Application
    Filed: May 1, 2013
    Publication date: November 6, 2014
    Applicant: Caterpillar Inc.
    Inventors: Timothy Hand, Ryan Harken, Robert Jackson, David Guetschow, Jeffrey Jones