Patents by Inventor Wolf-Dietmar Schulze

Wolf-Dietmar Schulze 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 valve for an oscillating motor adjuster
    Patent number: 8752514
    Abstract: The invention relates to a hydraulic valve for an oscillating motor adjuster that utilizes camshaft alternating torques by means of non-return valves for more rapid adjustment. The non-return valve that is not used for the respective rotation is additionally closed by means of the piston of the hydraulic valve.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: June 17, 2014
    Assignee: Hilite Germany GmbH
    Inventors: Wolf-Dietmar Schulze, Andre Selke
  • Hydraulic valve
    Patent number: 8505582
    Abstract: A hydraulic valve for oscillating-motor camshaft adjuster is provided. The valve has a bush and a hollow piston with a piston bottom. The piston is axially movable within the bush by means of an actuator against the force of a screw-type pressure spring. The actuator is applied to the piston bottom. A sleeve secured in the bush is disposed inside the hollow piston and can be displaced relative to the piston. The wall of this sleeve has at least one through-opening, which leads to at least one opening of the hollow piston, which opening can guide a supply pressure (P) applied inside the sleeve alternatively to two sets of pressure chambers of the oscillating-motor camshaft adjuster. The sleeve has a sleeve bottom that seals off the inside space of hollow piston.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: August 13, 2013
    Assignee: Hilite Germany GmbH
    Inventors: Patrick Gautier, Marc Hohmann, Wolf-Dietmar Schulze, Andre Selke, Markus Todt
  • HYDRAULIC VALVE FOR AN OSCILLATING MOTOR ADJUSTER
    Publication number: 20120152195
    Abstract: The invention relates to a hydraulic valve for an oscillating motor adjuster that utilizes camshaft alternating torques by means of non-return valves for more rapid adjustment. The non-return valve that is not used for the respective rotation is additionally closed by means of the piston of the hydraulic valve.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 21, 2012
    Applicant: Hilite Germany GmbH
    Inventors: Wolf-Dietmar Schulze, Andre Selke
  • Hydraulic valve
    Publication number: 20110266479
    Abstract: The invention relates to a hydraulic valve for oscillating-motor camshaft adjuster The valve has a bush and a hollow piston with a piston bottom. The piston is axially movable within the bush by means of an actuator against the force of a screw-type pressure spring. The actuator is applied to the piston bottom. A sleeve secured in the bush is disposed inside the hollow piston and can be displaced relative to the piston. The wall of this sleeve has at least one through-opening, which leads to at least one opening of the hollow piston, which opening can guide a supply pressure (P) applied inside the sleeve alternatively to two sets of pressure chambers of the oscillating-motor camshaft adjuster. The sleeve has a sleeve bottom that seals off the inside space of hollow piston.
    Type: Application
    Filed: April 28, 2011
    Publication date: November 3, 2011
    Applicant: Hydraulik-Ring GmbH
    Inventors: Patrick Gautier, Marc Hohmann, Wolf-Dietmar Schulze, Andre Selke, Markus Todt