Patents by Inventor Robert Hasenfratz

Robert Hasenfratz 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: 9759170
    Abstract: A filter element (10) comprises filter bellows (16), in particular open filter bellows made of a filter medium (18), which has an oncoming flow side (28) and an outgoing flow side (30) for the fluid to be filtered. The filter element (10) is disposed in the filter housing (11) in such a way that it separates at least one inlet (15) from at least one outlet (17). An element axis (14) of the filter element (10) and a housing axis (25) of the filter housing (11) may be aligned in parallel with or axially to the installation direction (12) in the filter housing (11) for installing the filter element (10). The filter element (10) has at least one outer support section (38), which protrudes axially beyond the filter bellows (16) on the oncoming flow side (28) or the outgoing flow side (30) with respect to the element axis (14) and protrudes into an axial projection of the oncoming flow side (28) or the outgoing flow side (30) with respect to the element axis (14).
    Type: Grant
    Filed: July 13, 2014
    Date of Patent: September 12, 2017
    Assignee: MANN+HUMMEL GMBH
    Inventors: Robert Hasenfratz, Fabian Wagner, André Roesgen, Christian Thalmann, Frank Pflueger
  • Publication number: 20170216748
    Abstract: A filter element has a filter element housing with first and second outwardly open receiving pockets. A first filter medium body is disposed in the first receiving pocket. A second filter medium body is disposed in the second receiving pocket. The first and second filter medium bodies delimit a common clean chamber that communicates with an outflow opening for purified fluid. The first receiving pocket has a circumferential first support rim on which the first medium body is supported. The second receiving pocket has a circumferential second support rim on which the second filter medium body is supported. The first receiving pocket has a first receiving wall partially enclosing the first filter medium body and extending outwardly away from the first support rim. The second receiving pocket has a second receiving wall partially enclosing the second filter medium body and extending outwardly away from the second support rim.
    Type: Application
    Filed: April 13, 2017
    Publication date: August 3, 2017
    Inventors: Robert Hasenfratz, Fabian Wagner
  • Publication number: 20170216749
    Abstract: A filter element has, on a filter element housing, a first and a second filter medium body, which are arranged at an angle to each other.
    Type: Application
    Filed: April 13, 2017
    Publication date: August 3, 2017
    Inventors: Robert Hasenfratz, Fabian Wagner
  • Publication number: 20170182448
    Abstract: A plate-type filter element for gas filtration has a filter medium body with a circumferentially extending seal that contacts seal-tightly a first sealing surface of a filter housing extending in a filter element plane of the filter element. A sealing bracket is connected to the seal and contacts seal-tightly a second sealing surface of the filter housing extending at least partially outside of the filter element plane. A filter device has a filter housing with first and second sealing surfaces. A plate-type filter element is mountable exchangeably in the filter housing. The filter element has a filter medium body, a circumferentially extending seal, and a sealing bracket connected to the seal. The first sealing surface extends in the filter element plane; the second sealing surface extends partially outside of the filter element plane. The seal contacts seal-tightly the first sealing surface; the sealing bracket seal-tightly contacts the second sealing surface.
    Type: Application
    Filed: March 13, 2017
    Publication date: June 29, 2017
    Inventors: Arthur Sudermann, Marcel Hofmeister, Daniel Schmid, Stefan Walz, Matthias Krohlow, Thomas Sieber, Michael Kolmeder, Frank Pflueger, Christian Thalmann, André Roesgen, Robert Hasenfratz, Fabian Wagner
  • Patent number: 9687768
    Abstract: A filter device has a filter housing and a plate-shaped filter element that is arranged in the filter housing. The filter element has oppositely positioned lateral surfaces that form an inflow side for a fluid to be filtered and an outflow side for the clean fluid. A first clean fluid outflow opening is introduced into the filter housing for discharging the clean fluid. An outflow pipe passes through the filter element for discharging the clean fluid through a second clean fluid outflow opening provided at the outflow pipe. The first clean fluid outflow opening is arranged at a spacing relative to the outflow pipe.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: June 27, 2017
    Assignee: MANN+HUMMEL GMBH
    Inventors: Fabian Wagner, Robert Hasenfratz, André Roesgen, Christian Thalmann, Frank Pflueger
  • Patent number: 9644580
    Abstract: A filter element (10) is provided with open filter bellows (16) of a filter medium (18). The filter element (10) has at least one longitudinal mating surface (40) which is directed with at least one direction component axially to an element axis (14) of the filter element (10) and which is in contact with a corresponding longitudinal mating surface of the filter housing (11) for securing the filter element (10) axially to the element axis (14). The filter element (10) has at least one transverse retaining surface (52) which is directed with at least one direction component across the element axis (14). The transverse retaining surface (52) is separated from the at least one longitudinal retaining surface (40) and may be in contact with a corresponding transverse mating surface (56) of the filter housing (11) for securing the filter element (10) across the element axis (14).
    Type: Grant
    Filed: July 13, 2014
    Date of Patent: May 9, 2017
    Assignee: MANN+HUMMEL GMBH
    Inventors: Pascal Neef, Werner Blossey, Mario Rieger, Robert Hasenfratz, Nadine Sorger, Andreas Weber
  • Publication number: 20170120166
    Abstract: A filter device includes in a filter housing a hollow cylindrical filter element having frontal end plates, a flow opening being made in one of the end plates. In order to interlockingly secure a pipe connection piece that communicates with the flow opening, a cover has a radial collar which forms an axial stop for the pipe connection piece.
    Type: Application
    Filed: December 26, 2016
    Publication date: May 4, 2017
    Inventors: Dieter Schreckenberger, Christian Christian Thalmann, Robert Hasenfratz, Fabian Wagner, Frank Pflueger, André Roesgen
  • Publication number: 20170120167
    Abstract: A filter device includes in a filter housing a hollow cylindrical filter element having frontal end plates. A port having a first sealing element is incorporated into a cover the filter housing, said sealing element being arranged coaxially relative to a second sealing element in a flow opening in the end plate.
    Type: Application
    Filed: December 26, 2016
    Publication date: May 4, 2017
    Inventors: Dieter Schreckenberger, Christian Christian Thalmann, Robert Hasenfratz, Fabian Wagner, Frank Pflueger, André Roesgen
  • Patent number: 9638147
    Abstract: A filter housing (11) has at least one inlet (15) and at least one outlet (17) for the fluid. The filter element (10) includes an open filter bellows (16) of a filter medium (18).The filter element (10) is arranged in a filter housing (11) separating the at least one inlet (15) from the at least one outlet (17). An element axis (14) of the filter element (10) and a housing axis (25) of the filter housing (11) can be aligned parallel or axially to an installation direction (12) of the filter element for installing the filter element (10) into the filter housing. The filter element (10) includes at least one guide crosspiece (46, 48) which extends axially and radially outward on a peripheral exterior side (26), relative to the element axis (14), of the filter element (10).
    Type: Grant
    Filed: July 13, 2014
    Date of Patent: May 2, 2017
    Assignee: MANN+HUMMEL GMBH
    Inventors: Robert Hasenfratz, Fabian Wagner, André Roesgen, Christian Thalmann, Frank Pflueger, Nadine Sorger, Werner Blossey, Mario Rieger, Andreas Weber, Pascal Neef
  • Publication number: 20170014739
    Abstract: A filter system (100) for filtering a fluid, with a front-end inlet (102) and outlet (104), and comprising: at least one filter element (10); a filter housing (108); a coupling device (30) for coupling the filter system (100) to a receiving means (32) external to the filter system; and a seal holder (16) having a seal (18) for sealing the filter system at the receiving means (32). In addition, the coupling device (30) has one or more coupling elements (36) that can be at least partially introduced in an axial direction (L) into a coupling contour (34) arranged in the receiving means (32), by means of a sliding-rotating movement, such that the 20 filter system (100) is held and locked in the receiving means (32) in an end position (38). Also disclosed is a combination of a filter system (100) together with a receiving means (32).
    Type: Application
    Filed: August 31, 2016
    Publication date: January 19, 2017
    Inventors: André Roesgen, Robert Hasenfratz, Fabian Wagner, Christian Thalmann, Frank Pflueger, Petra Skorpková
  • Patent number: 9511318
    Abstract: A filter element, in particular a flat filter element (10) for installation in a filter housing of a filter for a fluid, in particular an air filter, in particular for an internal combustion engine, in particular in a motor vehicle, and a filter are described. The filter element (10) comprises open filter bellows (16) made of a filter medium (18), which has an oncoming flow side (28) and an outgoing flow side (30) for the fluid to be filtered. The filter element (10) has at least two hand grip elements (46) for gripping the filter element (10).
    Type: Grant
    Filed: July 13, 2014
    Date of Patent: December 6, 2016
    Assignee: MANN+HUMMEL GMBH
    Inventors: Nadine Sorger, Michael Heim, Gelase Mbadinga Mouanda, Pascal Neef, Mario Rieger, Werner Blossey, Robert Hasenfratz
  • Publication number: 20160339364
    Abstract: A filter device for treating fluids, in particular for filtering fluids such as fuel, oil, or water, has a housing (56) with a housing pot (58), a housing cover (60), at least one inlet (88) for the fluid to be treated, and at least one outlet (82) for the treated fluid. A connecting head (12) has at least one feed (16) for the fluid to be treated and connectable to the at least one inlet (88), and/or at least one discharge (18). The connecting head (12) and the treatment element (14) can be connected to each other by means of a releasable bayonet-type connecting device (34) through the execution of a rotational/plug-in movement about a connecting axis (20) of the treatment device (10).
    Type: Application
    Filed: June 18, 2016
    Publication date: November 24, 2016
    Inventors: Christian Thalmann, Robert Hasenfratz, Fabian Wagner, André Roesgen, Frank Pflueger
  • Patent number: 9498744
    Abstract: Disclosed are an air filter element, a filter housing, and an air filter in which the air filter elements have a high filtering capacity and a long service life by increasing the filter surface of an air filter element taking into account structural requirements for the air filter housing.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: November 22, 2016
    Assignee: MANN+HUMMEL GMBH
    Inventors: Robert Hasenfratz, Mario Rieger, Joerg Menssen, Michael Harenbrock, Duc Cuong Nguyen, Pascal Neef, Werner Blossey, André Roesgen, Thomas Jessberger, Pedro Miguel Pereira Madeira, Michael Heim, Mike Schmid, Martin Schmid, Gelase Mbadinga-Mouanda, Andreas Weber, Christian Thalmann
  • Publication number: 20160325212
    Abstract: A filter element for filtering a fluid is provided with a housing and a filter body arranged in the housing. A cover closes off one end of the housing. An inlet is arranged on the cover at a raw side of the filter element for inflow of a fluid into the filter element. An outlet is arranged on the cover at a clean side of the filter element for discharge of the fluid from the filter element. The cover has a connecting area connecting the filter element with a counter element of a filter system. The cover has a sealing area that seals between the filter element and a receptacle of the filter system. A seal is disposed in the sealing area and has two separate sealing surfaces that effect a sealing action in the connecting area in axial direction and in radial direction of the filter element.
    Type: Application
    Filed: July 24, 2016
    Publication date: November 10, 2016
    Inventors: Frank Pflueger, Robert Hasenfratz, Fabian Wagner, André Roesgen, Christian Thalmann
  • Publication number: 20160305376
    Abstract: A filter element comprises one first and at least one second filter media body disposed at a common carrier body. At least one filter media body is formed in a curved manner.
    Type: Application
    Filed: April 15, 2016
    Publication date: October 20, 2016
    Inventors: Robert Hasenfratz, Torsten Fritzsching
  • Publication number: 20160296860
    Abstract: A filter device for treating fluids, in particular for filtering fluids such as fuel, oil, or water, has a housing (56) with a housing pot (58), a housing cover (60), at least one inlet (88) for the fluid to be treated, and at least one outlet (82) for the treated fluid. A connecting head (12) has at least one feed (16) for the fluid to be treated and connectable to the at least one inlet (88), and/or at least one discharge (18). The connecting head (12) and the treatment element (14) can be connected to each other by means of a releasable bayonet-type connecting device (34) through the execution of a rotational/plug-in movement about a connecting axis (20) of the treatment device (10).
    Type: Application
    Filed: June 18, 2016
    Publication date: October 13, 2016
    Inventors: Christian Thalmann, Robert Hasenfratz, Fabian Wagner, André Roesgen, Frank Pflueger
  • Publication number: 20160263513
    Abstract: A filter element for filtering a fluid, including: a filter bellows made of a filter medium folded into zig-zag-shaped pleats along fold edges, each pleat extending between opposing end edges of the filter bel-lows, and being laterally sealed at the end edges by means of at least one sealant track or a sideband; wherein the filter bellows includes a first element section; and a second element section, which include each on opposing end faces end edge surfaces and that substantially run parallel to one another, wherein, from one element section to another element section, at least one of the end edge surfaces changes direction.
    Type: Application
    Filed: May 20, 2016
    Publication date: September 15, 2016
    Inventors: Frank Pflueger, Fabian Wagner, Christian Thalmann, André Roesgen, Robert Hasenfratz, Daniel Schmid, Timo Dirnberger
  • Patent number: 9415337
    Abstract: Disclosed are an air filter element, a filter housing, and an air filter in which the air filter elements have a high filtering capacity and a long service life by increasing the filter surface of an air filter element taking into account structural requirements for the air filter housing.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: August 16, 2016
    Assignee: MANN+HUMMEL GMBH
    Inventors: Robert Hasenfratz, Mario Rieger, Joerg Menssen, Michael Harenbrock, Duc Cuong Nguyen, Pascal Neef, Werner Blossey, André Roesgen, Thomas Jessberger, Pedro Miguel Pereira Madeira, Michael Heim, Mike Schmid, Martin Schmid, Gelase Mbadinga-Mouanda, Andreas Weber, Christian Thalmann
  • Publication number: 20160230715
    Abstract: A filter element, including: a first filter media body having a filter media and an inflow side and an outflow side; and a second filter media body having a filter media and an inflow side and an outflow side; wherein the first filter media body and the second filter media body are adapted for installation into a filter element housing shared by both filter media bodies; wherein the filter element has a longitudinal axis; wherein the filter media bodies in the filter element housing delimit a common clean chamber shared by both filter media bodies, the common clean chamber from which the cleaned fluid is to be discharged via at least one outflow aperture; wherein at least one of the filter media bodies is constructed from at least two sections, each section differing in size from other sections.
    Type: Application
    Filed: April 15, 2016
    Publication date: August 11, 2016
    Inventors: Robert Hasenfratz, Fabian Wagner
  • Publication number: 20160228804
    Abstract: A filter device having a filter housing and a filter element having a first and a second filter media body at a common filter element housing. Cooperating positive-locking elements are disposed at the filter housing and a the filter element housing, which engage in a positive-locking manner.
    Type: Application
    Filed: April 15, 2016
    Publication date: August 11, 2016
    Inventors: Robert Hasenfratz, Fabian Wagner, André Roesgen, Christian Thalmann, Frank Pflueger