Patents by Inventor Stefan Drechsler

Stefan Drechsler 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: 11719605
    Abstract: The invention shows and describes a vibration mill for at least two grinding beakers performing vibrations in the horizontal position, with at least one multi-part pendulum drive, wherein the pendulum drive has at least one eccentric shaft mounted to rotate about a vertical eccentric axis, and at least two rockers each mounted so as to be capable of vibrating about a vertical vibration axis and connected by means of couplers to the eccentric shaft, said rockers holding the grinding beakers. The pendulum drive further has a motor unit coupled to the eccentric shaft as a drive for the eccentric shaft and optionally further components, wherein a rotary movement of the eccentric shaft via the couplers can be converted into a vibrating movement of the rockers. According to the invention, the centre of gravity of the pendulum drive in a horizontal centre of gravity plane is substantially equidistant from both vibration axes.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: August 8, 2023
    Assignee: Retsch GmbH
    Inventors: Uwe Orth, Stefan Drechsler, Frank Janetta, Alexander Mühlig
  • Publication number: 20200333219
    Abstract: The invention shows and describes a vibration mill for at least two grinding beakers performing vibrations in the horizontal position, with at least one multi-part pendulum drive, wherein the pendulum drive has at least one eccentric shaft mounted to rotate about a vertical eccentric axis, and at least two rockers each mounted so as to be capable of vibrating about a vertical vibration axis and connected by means of couplers to the eccentric shaft, said rockers holding the grinding beakers. The pendulum drive further has a motor unit coupled to the eccentric shaft as a drive for the eccentric shaft and optionally further components, wherein a rotary movement of the eccentric shaft via the couplers can be converted into a vibrating movement of the rockers. According to the invention, the centre of gravity of the pendulum drive in a horizontal centre of gravity plane is substantially equidistant from both vibration axes.
    Type: Application
    Filed: May 7, 2019
    Publication date: October 22, 2020
    Applicant: Retsch GmbH
    Inventors: Uwe Orth, Stefan Drechsler, Frank Janetta, Alexander Mühlig