Patents by Inventor Frank Ramm

Frank Ramm 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 output drive shaft generator
    Patent number: 8646266
    Abstract: The invention relates to a mobile machine having a traction drive and working hydraulics. The drive unit has a radial piston pump which is driven by a drive set and supplies working hydraulics. The radial piston pump is arranged on the axis of the output drive shaft of the drive set, between the drive set and a gearbox which is connected thereto via the output drive shaft. The drive set, the radial piston pump and the gearbox in this case form a compact drive unit.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: February 11, 2014
    Assignee: Sauer-Danfoss Inc.
    Inventors: Jeff Rea, Olaf Koltoff, Frank Ramm, Eckhard Skirde
  • Hydraulic drive with an independent charge pump
    Patent number: 8443596
    Abstract: The invention relates to a hydraulic drive (2) having a main pump (8), which can be adjusted in terms of delivery volume and delivery direction, and having a hydraulic motor (9), which main pump (8) and hydraulic motor (9) are connected to one another in a closed circuit via pressure lines (10A, 10B), and having a charge pump (14, 15) for charging into the closed circuit and for supplying pressurized fluid to at least one controlling device (11, 12), wherein the charge pump (15) has a separate drive motor (19) whose power/rotational speed can be specified independently of the rotational speed of the drive (3) of the main pump (8). In this way, the charge pump (15) can be of smaller dimensions than previously conventional, and the power balance of the hydraulic drive can be improved.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: May 21, 2013
    Assignee: Sauer Danfoss Inc.
    Inventor: Frank Ramm
  • Hydraulic output drive shaft generator
    Patent number: 8312715
    Abstract: The invention relates to a mobile machine having a traction drive and working hydraulics. The drive unit has a radial piston pump which is driven by a drive set and supplies working hydraulics. The radial piston pump is arranged on the axis of the output drive shaft of the drive set, between the drive set and a gearbox which is connected thereto via the output drive shaft. The drive set, the radial piston pump and the gearbox in this case form a compact drive unit.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: November 20, 2012
    Assignee: Sauer-Danfoss Inc.
    Inventors: Jeff Rea, Olaf Koltoff, Frank Ramm, Eckhard Skirde
  • HYDRAULIC OUTPUT DRIVE SHAFT GENERATOR
    Publication number: 20120279208
    Abstract: The invention relates to a mobile machine having a traction drive and working hydraulics. The drive unit has a radial piston pump which is driven by a drive set and supplies working hydraulics. The radial piston pump is arranged on the axis of the output drive shaft of the drive set, between the drive set and a gearbox which is connected thereto via the output drive shaft. The drive set, the radial piston pump and the gearbox in this case form a compact drive unit.
    Type: Application
    Filed: July 17, 2012
    Publication date: November 8, 2012
    Applicant: SAUER-DANFOSS INC.
    Inventors: Jeff Rea, Olaf Koltoff, Frank Ramm, Eckhard Skirde
  • HYDRAULIC DRIVE WITH AN INDEPENDENT CHARGE PUMP
    Publication number: 20100293937
    Abstract: The invention relates to a hydraulic drive (2) having a main pump (8), which can be adjusted in terms of delivery volume and delivery direction, and having a hydraulic motor (9), which main pump (8) and hydraulic motor (9) are connected to one another in a closed circuit via pressure lines (10A, 10B), and having a charge pump (14, 15) for charging into the closed circuit and for supplying pressurized fluid to at least one controling device (11, 12), wherein the charge pump (15) has a separate drive motor (19) whose power/rotational speed can be specified independently of the rotational speed of the drive (3) of the main pump (8). In this way, the charge pump (15) can be of smaller dimensions than previously conventional, and the power balance of the hydraulic drive can be improved.
    Type: Application
    Filed: November 10, 2009
    Publication date: November 25, 2010
    Applicant: SAUER-DANFOSS INC.
    Inventor: Frank Ramm
  • HYDRAULIC OUTPUT DRIVE SHAFT GENERATOR
    Publication number: 20090308065
    Abstract: The invention relates to a mobile machine having a traction drive and working hydraulics. The drive unit has a radial piston pump which is driven by a drive set and supplies working hydraulics. The radial piston pump is arranged on the axis of the output drive shaft of the drive set, between the drive set and a gearbox which is connected thereto via the output drive shaft. The drive set, the radial piston pump and the gearbox in this case form a compact drive unit.
    Type: Application
    Filed: May 4, 2009
    Publication date: December 17, 2009
    Applicant: Sauer-Danfoss Inc.
    Inventors: Jeff Rea, Olaf Koltoff, Frank Ramm, Eckhard Skirde