Patents by Inventor Marcus Hoefken

Marcus Hoefken 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: 10195573
    Abstract: A device for circulating wastewater is received in a tank, in which a conical or hyperboloid-like stirring body is mounted on a vertical stirring shaft, wherein the stirring body is composed from a plurality of segments produced from metal along radially extending joining zones.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: February 5, 2019
    Assignee: INVENT UMWELT-UND VERFAIIRENSTECHNIK AG
    Inventor: Marcus Hoefken
  • Patent number: 10130921
    Abstract: A stirring body has a hyperboloid-like or truncated cone-like form and a central connector piece for connection to a stirring shaft. To simplify the production of the stirring body and to reduce the transport outlay, it is proposed for the stirring body to be formed from a plurality of segments which are interconnected along joining zones extending from a peripheral edge in the direction of the connector piece.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: November 20, 2018
    Assignee: INVENT UMWELT—UND VERFAHRENSTECHNIK AG
    Inventor: Marcus Hoefken
  • Patent number: 10112161
    Abstract: A stirring device for wastewater includes a drive device having a drive shaft extending vertically in the assembled state, a stirring body mounted on the drive shaft, a safety bearing in which a free end of the drive shaft is rotatably held, a slide sleeve is mounted on the free end of the drive shaft, and a device for detecting a state of wear of the slide sleeve. The device for detecting the state of wear includes a sensor mounted on the safety bearing and an evaluation device for evaluating the signals delivered by the sensor.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: October 30, 2018
    Assignee: INVENT UMWELT—UND VERFAHRENSTECHNIK AG
    Inventor: Marcus Hoefken
  • Patent number: 10058832
    Abstract: A device for circulating a liquid received in a container, in particular for circulating wastewater received in a tank, has a hyperboloid-like or truncated cone-like stirring body mounted on a vertical shaft, wherein a plurality of transport ribs extending from the peripheral edge in the direction of the shaft are provided on an outer side of the stirring body, a centerline between two adjacent transport ribs is defined by points of equal minimum distance from each crest line of the two adjacent transport ribs, an aperture is provided in the stirring body between the two transport ribs, and an aperture area delimited by the edge of the aperture has a geometric center of gravity. The geometric center of gravity of the aperture area is disposed in a region between the centerline and the crest line of one of the two transport ribs.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: August 28, 2018
    Assignee: INVENT UMWELT- UND VERFAHRENSTECHNIK AG
    Inventor: Marcus Hoefken
  • Patent number: 9957800
    Abstract: The invention relates to a horizontal agitator for producing a flow in a clarifier, a submersible motor (1) and a propeller (3) drivingly connected thereto forming an assembly unit (M), wherein a receiving portion (A) for removably attaching the assembly unit (M) is provided and can be supported on the bottom (Bo) of the clarifier, and wherein a guide for guiding the assembly unit (M) along a substantially vertical movement path between a surfacing position above a maximum nominal sewage level (N) defined for the clarifier and the receiving portion (A) is provided. In order to improve the efficiency of the horizontal agitator and to reduce complexity of manufacture, the guide is formed by at least one first cable (S) extending between the surfacing position and the receiving portion (A).
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: May 1, 2018
    Assignee: INVENT UMWELT-UND VERFAHRENSTECHNIK AG
    Inventors: Marcus Hoefken, Thomas Hagspiel
  • Patent number: 9687798
    Abstract: The invention relates to a horizontal agitator for producing a flow in a clarifier, a propeller being connected to a submersible motor which is axially offset in relation thereto, wherein the propeller and the submersible motor are designed such that a flow in a direction from the propeller towards the submersible motor is produced when the submersible motor is operated, and wherein plate-shaped flow guide elements are provided downstream of the propeller and extend in at least an axial plane that runs substantially parallel to the propeller axis. In order to improve the efficiency of the horizontal agitator, it is proposed in accordance with the invention to support the submersible motor on a bottom of the clarifier via at least two first flow guide elements.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: June 27, 2017
    Assignee: INVENT UMWELT-UND VERFAHRENSTECHNIK AG
    Inventor: Marcus Hoefken
  • Patent number: 9604162
    Abstract: A rotary disc filter device includes a rotor rotatable about an axis of rotation, having a plurality of disc-shaped filter members. Each disc-shaped filter member has two walls extending outwardly form the axis of rotation. At least one of the walls has the form of a frustum.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: March 28, 2017
    Assignee: ADVANCED FILTRATION TECHNOLOGIES INC.
    Inventors: Marcus Hoefken, Thomas Hagspiel
  • Publication number: 20170065945
    Abstract: The invention relates to a stirring device for wastewater includes a drive device having a drive shaft extending vertically therefrom in the assembled state, a stirring body mounted on the drive shaft, and a safety bearing, in which a free end of the drive shaft is rotatably held. In order to avoid damage to the stirring device, in accordance with the invention a slide sleeve to be mounted on the free end of the drive shaft, and for a device for detecting a state of wear of the slide sleeve is provided.
    Type: Application
    Filed: March 2, 2015
    Publication date: March 9, 2017
    Inventor: Marcus Hoefken
  • Patent number: 9586161
    Abstract: A device for decanting a supernatant includes a decanter which is pivotally attached to a clarifier and which includes a decanter head that has a water inlet opening, a pivoting device which is connected to the decanter via an actuator with an adjustable length for raising and lowering the water inlet opening relative to a floor of the clarifier, a first measuring device for measuring a fill level of the wastewater received in the clarifier, a device for determining a length of the actuator, an evaluating device with which a distance of the water inlet opening of the decanter to the floor of the clarifier can be determined from the length of the actuator, and a controller for controlling the pivoting device such that a water inlet opening immersion depth, which results from the difference between the fill level and the distance, is kept in a specified range.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: March 7, 2017
    Assignee: INVENT UMWELT—UND VERFAHRENSTECHNIK AG
    Inventor: Marcus Hoefken
  • Patent number: 9556047
    Abstract: A device for gassing liquids, in particular for aerating sewage and the like, includes a lower housing element, which has a substantially round opening area and a gas inlet port, a disc-shaped upper housing element, corresponding to the opening area, for covering the opening area, the upper housing element having an upper side facing away from the lower housing element, a number of gas through-openings provided in the vicinity of a peripheral edge of the upper housing element, passing through the upper side, and a perforated gassing membrane, covering over the upper side of the upper housing element.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: January 31, 2017
    Assignee: INVENT UMWELT-UND VERFAHRENSTECHNIK AG
    Inventor: Marcus Hoefken
  • Patent number: 9555349
    Abstract: A rotary disc filter device includes a rotor rotatable about an axis of rotation. The rotor includes a plurality of disc-shaped filter members, each disc-shaped filter member having a frame. The frame is made of sheet metal elements which are connected with each other by rivets.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: January 31, 2017
    Assignee: ADVANCED FILTRATION TECHNOLOGIES INC.
    Inventors: Marcus Hoefken, Thomas Hagspiel
  • Publication number: 20170021313
    Abstract: The invention relates to a stirring body, in particular for generating a current in a wastewater treatment tank, stirring body having a hyperboloid-like or truncated cone-like form and a central connector piece for connection to a stirring shaft. To simplify the production of the stirring body and to reduce the transport outlay, it is proposed in accordance with the invention for the stirring body to be formed from a plurality of segments which are interconnected along joining zones extending from a peripheral edge in the direction of the connector piece.
    Type: Application
    Filed: October 15, 2014
    Publication date: January 26, 2017
    Inventor: Marcus HOEFKEN
  • Publication number: 20170001156
    Abstract: The invention relates to a device for circulating wastewater received in a tank, in which device a conical or hyperboloid-like stirring body is mounted on a vertical stirring shaft, wherein the stirring body is composed from a plurality of segments produced from metal along radially extending joining zones.
    Type: Application
    Filed: October 27, 2014
    Publication date: January 5, 2017
    Inventor: Marcus HOEFKEN
  • Publication number: 20160339401
    Abstract: A device for circulating a liquid received in a container, in particular for circulating wastewater received in a tank, has a hyperboloid-like or truncated cone-like stirring body mounted on a vertical shaft, wherein a plurality of transport ribs extending from the peripheral edge in the direction of the shaft are provided on an outer side of the stirring body, a centerline between two adjacent transport ribs is defined by points of equal minimum distance from each crest line of the two adjacent transport ribs, an aperture is provided in the stirring body between the two transport ribs, and an aperture area delimited by the edge of the aperture has a geometric center of gravity. The geometric center of gravity of the aperture area is disposed in a region between the centerline and the crest line of one of the two transport ribs.
    Type: Application
    Filed: October 27, 2014
    Publication date: November 24, 2016
    Inventor: Marcus HOEFKEN
  • Patent number: 9433879
    Abstract: The invention relates to a decanter (2) for separating a supernatant arranged above a sludge in a settlement tank (1), wherein a withdrawal device (5, 16) with a receiving pipe (9, 18), which extends in the manner of a T-piece approximately perpendicular to a discharge pipe (4, 17), is attached to one end of the discharge pipe (4, 17). To reduce the production cost, it is proposed in accordance with the invention for the receiving pipe (9, 18) to be a polygonal pipe produced from sheet metal.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: September 6, 2016
    Assignee: INVENT UMWELT-UND VERFAHRENSTECHNIK AG
    Inventor: Marcus Hoefken
  • Patent number: 9393534
    Abstract: The invention relates to a horizontal agitator for producing a substantially horizontal flow in a wastewater treatment tank, a propeller being installed on a polygonal shaft driven by means of a submersible motor, wherein the propeller is produced form a first material, which is formed from a polymer reinforced with first fibers, and as hub has a sleeve which corresponds to the outer shape of the polygonal shaft and which is produced from a second material which is different from the first material.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: July 19, 2016
    Assignee: INVENT UMWELT-UND VERFANRENSTECHNIK AG
    Inventors: Marcus Hoefken, Thomas Hagspiel
  • Publication number: 20150290564
    Abstract: A rotary disc filter device includes a rotor rotatable about an axis of rotation, having a plurality of disc-shaped filter members. Each disc-shaped filter member has two walls extending outwardly form the axis of rotation. At least one of the walls has the form of a frustum.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 15, 2015
    Applicant: Advanced Filtration Technologies Inc.
    Inventors: Marcus HOEFKEN, Thomas HAGSPIEL
  • Publication number: 20150290565
    Abstract: A rotary disc filter device includes a rotor rotatable about an axis of rotation. The rotor includes a plurality of disc-shaped filter members, each disc-shaped filter member having a frame. The frame is made of sheet metal elements which are connected with each other by rivets.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 15, 2015
    Applicant: Advanced Filtration Technologies Inc.
    Inventors: Marcus HOEFKEN, Thomas HAGSPIEL
  • Patent number: D733839
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: July 7, 2015
    Assignee: INVENT UMWELT-UND VERFAHRENSTECHNIK AG
    Inventor: Marcus Hoefken
  • Patent number: D735291
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: July 28, 2015
    Assignee: INVENT UMWELT-UND VERFAHRENSTECHNIK AG
    Inventor: Marcus Hoefken