Patents by Inventor Alfred Richter

Alfred Richter 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).

  • Patent number: 9017220
    Abstract: A method for operating a brake system for a work machine that includes at least one operating brake acting directly or indirectly on at least one ground engagement element of the work machine and at least one operating brake actuator which is movable between a fully engaged position and a fully released position and an accelerator actuator for activating propulsion of the work machine. In an activated state of the brake system the operating brake actuator is moved automatically to its fully engaged position when the accelerator actuator is released.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: April 28, 2015
    Assignee: Volvo Construction Equipment AB
    Inventors: Alfred Richter, Frederic Lastre
  • Patent number: 8749080
    Abstract: An electric operating system for operating at least one electric equipment article for a work machine is provided. This electric operating system includes a flywheel generator for generating electric power needed for the operation of the at least one electric equipment article. Further, the system includes a power electronic device connected to the output of the flywheel generator for adapting a voltage level provided by the flywheel generator to a voltage level required for the operation of the at least one electric equipment article. Finally, the system includes a connector device adapted for to be connectable to the power electronic device and the at least one electric equipment article when the at least one electric equipment article is attached to, or arranged at, the work machine for providing the at least one electric equipment article with electric power at the adapted voltage level.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: June 10, 2014
    Assignee: Volvo Construction Equipment AB
    Inventors: Oliver Bichler, Alfred Richter, Günther Steinbrecher
  • Patent number: 8656711
    Abstract: A hydraulic circuit for operating a tool is provided that is particularly useful in construction equipment such as an excavator, crane, wheel loader, drilling machine, or others. Furthermore, a control unit and a method for controlling the hydraulic circuit and construction equipment including such a hydraulic circuit is disclosed.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: February 25, 2014
    Assignee: Volvo Construction Equipment AB
    Inventors: Alfred Richter, Frederic Lastre
  • Publication number: 20120292918
    Abstract: An electric operating system for operating at least one electric equipment article for a work machine is provided. This electric operating system includes a flywheel generator for generating electric power needed for the operation of the at least one electric equipment article. Further, the system includes a power electronic device connected to the output of the flywheel generator for adapting a voltage level provided by the flywheel generator to a voltage level required for the operation of the at least one electric equipment article. Finally, the system includes a connector device adapted for to be connectable to the power electronic device and the at least one electric equipment article when the at least one electric equipment article is attached to, or arranged at, the work machine for providing the at least one electric equipment article with electric power at the adapted voltage level.
    Type: Application
    Filed: August 13, 2009
    Publication date: November 22, 2012
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Oliver Bichler, Alfred Richter, Günther Steinbrecher
  • Publication number: 20120133157
    Abstract: A door locking arrangement is provided for a door of a work machine for holding the door in an open position, wherein the door is pivotably connected to a cab wall. The door locking arrangement includes a first holding element and a second holding element forming a releasable connection for holding the door in its open position, wherein one of the two holding elements is arranged at an outside of the door facing the cab wall when the door is in its open position and the other holding element is arranged at the cab wall. An electric actuator is provided for releasing the releasable connection by separating the first holding element from the second holding element when the door is to be moved from its open position to its closed position.
    Type: Application
    Filed: August 13, 2009
    Publication date: May 31, 2012
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Oliver Bichler, Alfred Richter
  • Publication number: 20120080247
    Abstract: An invalid vehicle having a drive comprising an electric machine (3) which comprises an output shaft (4), and with an axle (2) which is operatively connected to the output shaft (4) via a drive transmission region (7) of the axle (2), wherein the output shaft (4) of the electric machine (3) is arranged substantially parallel to the axle (2), and the drive transmission region (7) is arranged substantially in the center of the axle (2).
    Type: Application
    Filed: October 5, 2010
    Publication date: April 5, 2012
    Inventors: Egon Schmid, Alfred Richter
  • Publication number: 20110300992
    Abstract: A method for operating a brake system for a work machine that includes at least one operating brake acting directly or indirectly on at least one ground engagement element of the work machine and at least one operating brake actuator which is movable between a fully engaged position and a fully released position and an accelerator actuator for activating propulsion of the work machine. In an activated state of the brake system the operating brake actuator is moved automatically to its fully engaged position when the accelerator actuator is released.
    Type: Application
    Filed: September 8, 2008
    Publication date: December 8, 2011
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Alfred Richter, Frederic Lastre
  • Publication number: 20100083650
    Abstract: A hydraulic circuit for operating a tool is provided that is particularly useful in construction equipment such as an excavator, crane, wheel loader, drilling machine, or others. Furthermore, a control unit and a method for controlling the hydraulic circuit and construction equipment including such a hydraulic circuit is disclosed.
    Type: Application
    Filed: February 6, 2007
    Publication date: April 8, 2010
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Alfred Richter, Frederic Lastre