Patents by Inventor Bernd Weigand

Bernd Weigand 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).

  • Bushing for a hydraulic valve
    Patent number: 7121553
    Abstract: A bushing for a hydraulic valve has a bushing wall having openings allowing passage of a hydraulic medium to and from an interior of the bushing. The openings have an opening wall that at least across a portion of a circumference of the opening wall is formed as a molded bevel. The molded bevel is positioned at an acute angle to a radial plane of the bushing wall. The bushing wall has outer annular channels and the openings open into the outer annular channels, respectively.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: October 17, 2006
    Assignee: Hydraulik-Ring GmbH
    Inventors: Marius Cornea, Bernd Weigand
  • Check valve and valve arrangement comprising such a check valve
    Patent number: 6899126
    Abstract: A check valve is mounted in a valve arrangement having a valve member with an annular channel and at least one bore opening into the annular channel. The check valve has a closing element configured to close the at least one bore in the annular channel. The closing element is formed of a strip shaped as a ring. The strip of the check valve is arranged in the annular channel of the valve member.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: May 31, 2005
    Assignee: Hydraulik-Ring GmbH
    Inventors: Bernd Weigand, Marius Cornea, Lorenz Lippert, Edwin Palesch, Gerold Sluka
  • Valve having at least one screen
    Patent number: 6892759
    Abstract: A valve has a valve housing having a flow path for a medium with at least one bore. At least one screen is arranged in the flow path of the medium in the valve housing. The screen is a perforated plate having screen openings and is made of a strap. The valve housing has at least one annular channel and the screen is arranged on a support surface provided in the annular channel.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: May 17, 2005
    Assignee: Hydraulik-Ring GmbH
    Inventors: Marius Cornea, Lorenz Lippert, Bernd Weigand, Andreas Knecht
  • Bushing for a Hydraulic Valve
    Publication number: 20040244852
    Abstract: A bushing for a hydraulic valve has a bushing wall having openings allowing passage of a hydraulic medium to and from an interior of the bushing. The openings have an opening wall that at least across a portion of a circumference of the opening wall is formed as a molded bevel. The molded bevel is positioned at an acute angle to a radial plane of the bushing wall. The bushing wall has outer annular channels and the openings open into the outer annular channels, respectively.
    Type: Application
    Filed: April 30, 2004
    Publication date: December 9, 2004
    Applicant: HYDRAULIK-RING GMBH
    Inventors: Marius Cornea, Bernd Weigand
  • Valve Having At Least One Screen
    Publication number: 20040118459
    Abstract: A valve has a valve housing having a flow path for a medium with at least one bore. At least one screen is arranged in the flow path of the medium in the valve housing. The screen is a perforated plate having screen openings and is made of a strap. The valve housing has at least one annular channel and the screen is arranged on a support surface provided in the annular channel.
    Type: Application
    Filed: December 18, 2002
    Publication date: June 24, 2004
    Applicant: HYDRAULIK-RING GMBH
    Inventors: Marius Cornea, Lorenz Lippert, Bernd Weigand, Andreas Knecht