Patents by Inventor Willi Rott

Willi Rott 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: 10238998
    Abstract: A backflush filter for liquid media, having a filter housing, which is formed by means of at least one supporting cage, which has at least two groups of slot-type apertures, and at least one filtering means supported on the supporting cage, where-in the apertures of each group extend in parallel alignment with one another and are separated from one another by ribs, and having a backflushing device, which is arranged in the interior of the filter insert, is rotatable and has at least one slit, said backflushing device being designed for flushing of the filtering means via the slit and apertures. The direction of motion of the backflushing device can be reversed during the backflush cycle and a filter insert therefore, wherein the backflush filter and the filter insert include a filtering means having a pleated, preferably multi-ply, filter fabric or filter cloth with pleating folds, and the ribs fit by means of a rib front into respective pleating folds.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: March 26, 2019
    Assignee: Boll & Kirch Filterbau GmbH
    Inventors: Karsten Cartarius, Andreas Finsel, Willi Rott
  • Patent number: 10035085
    Abstract: A backflush filter for liquid media, having a filter housing formed by supporting cage(s) having at least two groups of apertures, and a filtering means supported on the supporting cage, the apertures of each group extend in parallel and are separated by ribs, and having a backflushing device arranged in the interior of the filter insert, is rotatable and has a slit, the backflushing device for flushing the filtering means via the slit and apertures, the direction of the backflushing device being reversible during the backflush cycle, the backflushing device having at least two separated flushing chambers having a corresponding slit, and also a hollow shaft, capable of limited rotary motion relative to the flushing chambers, which shaft having first and second radial outlets, the direction of the backflushing device being reversible during backflushing, and driving means for movement of the flushing chambers and the hollow shaft, are provided for both directions of motion.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: July 31, 2018
    Assignee: BOLL & KIRCHFIL TERBAU GMBH
    Inventors: Karsten Cartarius, Andreas Finsel, Willi Rott
  • Publication number: 20170128860
    Abstract: A backflush filter for liquid media, having a filter housing, which is formed by means of at least one supporting cage, which has at least two groups of slot-type apertures, and at least one filtering means supported on the supporting cage, where-in the apertures of each group extend in parallel alignment with one another and are separated from one another by ribs, and having a backflushing device, which is arranged in the interior of the filter insert, is rotatable and has at least one slit, said backflushing device being designed for flushing of the filtering means via the slit and apertures. The direction of motion of the backflushing device can be reversed during the backflush cycle and a filter insert therefore, wherein the backflush filter and the filter insert include a filtering means having a pleated, preferably multi-ply, filter fabric or filter cloth with pleating folds, and the ribs fit by means of a rib front into respective pleating folds.
    Type: Application
    Filed: June 10, 2015
    Publication date: May 11, 2017
    Applicant: Boll & Kirch Filterbau GmbH
    Inventors: Karsten Cartarius, Andreas Finsel, Willi Rott
  • Publication number: 20160151726
    Abstract: A backflush filter for liquid media, having a filter housing formed by supporting cage(s) having at least two groups of apertures, and a filtering means supported on the supporting cage, the apertures of each group extend in parallel and are separated by ribs, and having a backflushing device arranged in the interior of the filter insert, is rotatable and has a slit, the backflushing device for flushing the filtering means via the slit and apertures, the direction of the backflushing device being reversible during the backflush cycle, the backflushing device having at least two separated flushing chambers having a corresponding slit, and also a hollow shaft, capable of limited rotary motion relative to the flushing chambers, which shaft having first and second radial outlets, the direction of the backflushing device being reversible during backflushing, and driving means for movement of the flushing chambers and the hollow shaft, are provided for both directions of motion.
    Type: Application
    Filed: June 11, 2014
    Publication date: June 2, 2016
    Applicant: Boll & Kirch Fillerbau GmbH
    Inventors: Karsten Cartarius, Andreas Finsel, Willi Rott
  • Publication number: 20130306546
    Abstract: A reversible-flow filter with a filter insert in a filter housing, the inner space of which being connected to a fluid inlet, an outlet and a backwash device being rotatable and having a backwash body with a washing gap, reaching near the surface of the filter wall, for cleaning off the filter wall in backwash operation. The backwash device is coupled at one axial end to a rotary drive and at its other end to a sludge discharge. The backwash body having a suckaway slot openable into the inner space, separate from the washing gap and having a larger opening cross-section than the washing gap, wherein the backwash device has a hollow shaft partially movable in relation to the backwash body and rotatable for connecting the washing gap or suckaway slot to the sludge discharge as a function of the relative position between the backwash body and the hollow shaft.
    Type: Application
    Filed: January 24, 2012
    Publication date: November 21, 2013
    Applicant: BOLL & KIRCH FILTERBAU GMBH
    Inventors: Karsten Cartarius, Willi Rott
  • Patent number: 7250109
    Abstract: In the backflush filter (10) according to the invention, in which the flushing back of the filter inserts (15) which are received in several filter chambers takes place by means of flushing filtrate loaded by compressed air, the flush valve (35) and the mud drain valve (39) are actuated by a common drive, whereas the valves or the valve bores (45, 46) are dimensioned in such a manner that the flush valve only releases the connection to the filtrate chamber (19?) of the filter inserts (15?) to be flushed back, when the mud drain valve has already at least partially released the connection between the mud chamber (24?) of the affected filter chamber (14?) with a mud outlet (40). By this, it is ensured in a particularly simple manner that at the backflush process the pressure level in the mud chamber has already dropped before the filtrate for the backflush is loaded with compressed air (see FIG. 2).
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: July 31, 2007
    Assignee: Boll & Kirch Filterbau GmbH
    Inventors: Rudiger Lennartz, Heinz Sindorf, Willi Rott
  • Patent number: 6890434
    Abstract: A backflushing filter for filtering oil includes filter candles 22 which are open at both ends 24, 34 and disposed around a rotary shaft 1 in a filter housing. A cleaning device is moved in conjunction with the rotary shaft and includes upper and lower flushing cocks communicating with an outflow valve via the shaft for cleaning the candles during a backflushing operation. The upper flushing cock 27 is offset by an angle in the direction of rotation in relation to the lower flushing cock 37. A lower closure element 38 moves in conjunction with the upper flushing cock at the opposite end of a filter candle(s) selected for backflushing. Likewise, an upper closure element is associated with the lower flushing cock. The candles can be reverse-flushed in opposite directions and at different times by the flushing cocks and closure elements. The flushing cocks and closure elements are moved inside annular deflection hoods 60, 70.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: May 10, 2005
    Assignee: Boll & Kirch Filterbau GmbH
    Inventors: Willi Rott, Wilhelm Vieten, Heinz Heinrich Leonhard Sindorf, RĂ¼diger Lennartz, Sivagnanam Kandiah
  • Publication number: 20040245160
    Abstract: In the backflush filter (10) according to the invention, in which the flushing back of the filter inserts (15) which are received in several filter chambers takes place by means of flushing filtrate loaded by compressed air, the flush valve (35) and the mud drain valve (39) are actuated by a common drive, whereas the valves or the valve bores (45, 46) are dimensioned in such a manner that the flush valve only releases the connection to the filtrate chamber (19′) of the filter inserts (15′) to be flushed back, when the mud drain valve has already at least partially released the connection between the mud chamber (24′) of the affected filter chamber (14′) with a mud outlet (40). By this, it is ensured in a particularly simple manner that at the backflush process the pressure level in the mud chamber has already dropped before the filtrate for the backflush is loaded with compressed air (see FIG. 2).
    Type: Application
    Filed: June 4, 2004
    Publication date: December 9, 2004
    Inventors: Rudiger Lennartz, Heinz Sindorf, Willi Rott
  • Publication number: 20030136715
    Abstract: This invention relates to a backflushing filter, particularly for filtering lubricating oil. Filter candles 22 which are open at both ends 24, 34 are disposed around a rotary shaft 1 in the filter housing 11, 12, the interior space of which filter candles can be acted upon in filtration operation by a sludge which flows into the backflushing filter 10. A cleaning device is moved in conjunction by means of the rotary shaft 1, and comprises an upper flushing cock 27 and a lower flushing cock, which communicate with an outflow valve via the rotary shaft 1, for cleaning the filter candles 22′ during a backflushing operation. The upper flushing cock 27 is offset by an angle in the direction of rotation in relation to the lower flushing cock 37.
    Type: Application
    Filed: November 6, 2002
    Publication date: July 24, 2003
    Inventors: Willi Rott, Wilhelm Vieten, Heinz Heinrich Leonhard Sindorf, Rudiger Lennartz, Sivagnanam Kandiah
  • Patent number: 4518501
    Abstract: The flush-back filter according to the invention uses as supporting element for at least one filter element a support cage which is arranged firmly on the inside of the filter housing and is penetrated from the interior to the exterior by the medium to be filtered. At the interior of the support cage a lifting or rotating flush-back device is located which upon its movement passes over the slot-type windows of the support cage in succession. The slot-type windows are arranged on the support cage in several groups in such a way that the windows of the one group are offset against those of the other group(s) in the direction of movement of the flush-back device, in such a way that the windows of the one group lie at least with the webs of another group on a common plane. In this way the entire filter area is subjected to the flush-back operation during this operation only over very small surface areas, with the result that small flush-back volumes can be used and the pressure drop is slight.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: May 21, 1985
    Assignee: Firma Boll & Kirch, Filterbau GmbH
    Inventors: Rudiger Lennartz, Willi Rott, Heinz Sindorf