Patents by Inventor Harald Mees

Harald Mees 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: 10639565
    Abstract: A method for producing a filter element for filtering fluids, such as hydraulic fluids, lubricants or fuels, includes the following steps: a) providing at least one section of a filter mat web (14) made of one or more layers of at least one filter medium; b) connecting the ends of the at least one section to form an annular body (12) and placing that annular body onto a support pipe (16); c) wrapping at least one cutout of a film web (8) around the outside of the annular body (12) located on the support pipe (16) and d) placing end areas (24) of the at least one cutout of the film web (8) one on top of the other and connecting the overlapping end areas (24).
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: May 5, 2020
    Assignee: HYDAC FILTERTECHNIK GMBH
    Inventor: Harald Mees
  • Patent number: 9827515
    Abstract: A filter element (20) includes individual components (2, 4, 8), such as a filter medium (8) as one component and further filter element components (2, 4), of which at least one component (4) is made of a material that is at least partially transparent to laser light and at least one further component (2), in the manner of a barrier layer, is made of a material that is at least partially opaque to laser light to perform a transmission welding method by laser light for connecting associable components to each other. At least some of the components of the filter element that are exposed to the laser light during the transmission welding method are at least partially electrically conductive.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: November 28, 2017
    Assignee: HYDAC FILTERTECHNIK GMBH
    Inventors: Giuseppe Galifi, Harald Mees
  • Patent number: 8696857
    Abstract: A method for forming a filter mat (1) suitable for filter fluids includes forming at least one web section (39) of a mat web (9) and at least one welding line (13, 15, 41) that seals the layers of at least one web section (39) of the mat web (9) to each other. Subsequently, at least one cut (19, 37) is carried out along the at least one welding line (13, 15, 41) such that the at least one web section (39) is cut forming at least one sealed edge region (43).
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: April 15, 2014
    Assignee: Hydac Filtertechnik GmbH
    Inventor: Harald Mees
  • Publication number: 20130062271
    Abstract: The invention relates to a filter element (20), comprising individual components (2, 4, 8), such as a filter medium (8) as one component and further filter element components (2, 4), of which at least one component (4) is made of a material that is at least partially transparent to laser light and at least one further component (2), in the manner of a barrier layer, is made of a material that is at least partially opaque to laser light in order to perform a transmission welding method by means of laser light for the purpose of connecting associable filter elements to each other, wherein said method is characterized in that at least some of the components of the filter element that are exposed to the laser light during the transmission welding method are at least partially electrically conductive.
    Type: Application
    Filed: December 8, 2010
    Publication date: March 14, 2013
    Inventors: Giuseppe Galifi, Harald Mees
  • Publication number: 20130015121
    Abstract: The invention relates to a method for producing a filter element for filtering fluids, such as hydraulic fluids, lubricants, or fuels, comprising the following steps: a) providing at least one section of a filter mat web (14) made of one or more layers of at least one filter medium; b) connecting the ends of the at least one section in order to form an annular body (12) and placing said annular body onto a support pipe (16); wherein said method is characterized by: c) wrapping at least one cutout of a film web (8) around the outside of the annular body (12) located on the support pipe (16) and d) placing end areas (24) of the at least one cutout of the film web (8) one on top of the other and connecting the overlapping end areas (24).
    Type: Application
    Filed: January 25, 2011
    Publication date: January 17, 2013
    Inventor: Harald Mees
  • Publication number: 20120205044
    Abstract: The invention relates to a method for forming a filter mat (1) suitable for filtering fluids, comprising at least one web section (39) of a mat web (9), at least one welding line (13, 15, 41) that seals the layers of at least one web section (39) of the mat web (9) to each other being formed. The invention is characterized in that subsequently at least one cut (19, 37) is carried out along the at least one welding line (13, 15, 41) such that the at least one web section (39) is cut forming at least one sealed edge region (43).
    Type: Application
    Filed: November 19, 2010
    Publication date: August 16, 2012
    Inventor: Harald Mees
  • Publication number: 20100084334
    Abstract: 1. A method for the production of a filter element. 2. A method for the production of a filter element (1) comprising the steps: a) Providing a filter medium (3) surrounding an inner filter cavity (7) and comprising a heat-sealable material; b) Providing at least one end cap (9, 13) made of thermoplastic, laser-permeable material, forming a covering of the filter cavity (7) on at least one end; c) Forming a laser-impermeable barrier layer (31) between the end cap (9, 13) and the adjacent end of the filter medium (3) and d) Welding the end cap (9, 13) and filter medium (3) by irradiating laser-permeable material adjacent to the barrier layer (31) with laser energy such that, by heating the region adjacent to the barrier layer (31), a welding volume is provided as a joining element for the welded joint created by laser-transmission welding.
    Type: Application
    Filed: December 6, 2007
    Publication date: April 8, 2010
    Inventors: Giuseppe Galifi, Harald Mees
  • Patent number: 7462282
    Abstract: A filter element includes a filter cylinder whose outer side rests against a fluid-permeable supporting tube (15). The inside (3) of the filter cylinder can be flown through by the fluid to be filtered. The filter cylinder is formed by a filter mat web. The filter mat web has a series of folds (9) that rest against one another at least in areas. Both ends of the filter mat web are joined to one another at a junction (5) to form an annular body (1). The filter element includes a device that acts upon the junction (5) to prevent, in the area of the junction (5), a bulging of the folds (9) caused by the flow of the fluid.
    Type: Grant
    Filed: July 26, 2003
    Date of Patent: December 9, 2008
    Assignee: Hydac Filtertechnik GmbH
    Inventors: Harald Mees, Michael Sakraschinsky
  • Publication number: 20080257483
    Abstract: A process for production of a filter element includes forming a cylinder by bending a flexible filter mat having a series of folds adjacent to one another at least in individual end areas on longitudinal end edges thereof such that the end areas overlap with end edges being aligned along a length of the cylinder, joining the end areas on an exterior of the cylinder along a junction seam, and reversing the cylinder inside out such that an annular filter element is formed with the junction seam on an interior thereof.
    Type: Application
    Filed: May 30, 2008
    Publication date: October 23, 2008
    Inventors: Harald Mees, Michael Sakraschinsky
  • Patent number: 7018493
    Abstract: A method produces a connection interface in a tubular filter element for filtering liquids, including a filter mat (10). The opposite ends (14) of the filter mat are interconnected in a connection position by a planar weld seam (28) provided with an embossed strip in the region of the free ends (14) of the filter mat. A region is provided between the embossed weld seam (30) and the beginning of the transition towards the tubular filter mats, in which a smooth weld seam (32) is applied without embossing in a flat strip along the ends (14) of the filter mat. This arrangement enables the ends of the filter mat to be welded together in a strong and long-lasting manner. The embossed weld seam is simultaneously unloaded of any stress by the smooth weld seam.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: March 28, 2006
    Assignee: Hydac Filtertechnik GmbH
    Inventors: Gerd Altmeyer, Jurgen Lang, Harald Mees
  • Publication number: 20050284807
    Abstract: The invention relates to a filter element comprising a filter cylinder whose outer side rests against a fluid-permeable supporting tube (15). The inside (3) of the filter cylinder can be flown through by the fluid to be filtered, and the filter cylinder is formed by a filter mat web. The filter mat web has a series of folds (9) that rest against one another at least in areas. Both ends of the filter mat web are joined to one another at a junction (5) in order to form an annolar body (1). The inventive filter element comprises a device that acts upon the junction (5) in order to prevent, in the area of the junction (5), a bulging of the folds (9) that is caused by the flow of the fluid.
    Type: Application
    Filed: July 26, 2003
    Publication date: December 29, 2005
    Inventors: Harald Mees, Michael Sakraschinsky
  • Patent number: 6949155
    Abstract: A tubular filter element and a device for producing the same for filtering fluids includes a filter mate. The facing ends of the filter mat are fixed in position by a connecting device which at least partially overlaps the filter mat.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: September 27, 2005
    Assignee: Hydac Filtertechnik GmbH
    Inventors: J├╝rgen Lang, Harald Mees, Michael Sakraschinsky
  • Patent number: 6863758
    Abstract: A method of assembling a filter element includes the initial step of forming a plastic filter casing with openings from a flat blank with opposite ends thereof bent towards one another and joining these opposite ends together by a sealing seam. Also, a resilient mat filter is folded into a cylindrical shape and pushed open on a fluid-permeable supporting pipe to surround and engage the surrounding pipe. The cylindrical shape of the mat filter has an exterior diameter prior to introduction into the casing that is larger than an interior diameter of the filter casing along the entire axial length of the mat filter. The mat folder is folded into a conical shape to facilitate its introduction thereof into the filter casing. After the axial end is formed, the mat filter and supporting pipe are introduced into the filter casing to define a filter chamber. Finally, two end caps are joined to the filter casing.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: March 8, 2005
    Assignee: Hydac Filtertechnik GmbH
    Inventors: Gerd Altmeyer, Harald Mees, Herbert Mohr, Ute Lehmann
  • Publication number: 20040173303
    Abstract: The invention relates to a method for producing a connection interface in a tubular filter element for filtering liquids, comprising a filter mat (10), the opposite ends (14) of said filter mat being interconnected in a connection position by means of a plane weld seam (28) which is provided with an impressed strip in the region of the free ends (14) of the filter mat. A region is provided between the impressed weld seam (30) formed in such a way and the beginning of the transition towards the tubular filter mats, in which a smooth weld seam (32) is applied without impression in a flat strip along the ends (14) of the filter mat. This enables the ends of the filter mat to be welded together in a strong and long-lasting manner, the impressed weld seam being simultaneously unloaded of any stress by means of the smooth weld seam. The invention also relates to a device for carrying out the method.
    Type: Application
    Filed: January 8, 2004
    Publication date: September 9, 2004
    Inventors: Gerd Altmeyer, Jurgen Lang, Harald Mees
  • Patent number: 6347712
    Abstract: A filter with a multi-piece filter body has a filter head connected to a filter pot and has at least one filter element. The filter element has a support tube surrounded by a filter mat. The filter mat free ends have element mountings. One of the element mounting is rigidly connected to the support tube and can be placed in contact with the filter head. An intermediate member is arranged, at least at that end of the filter element mounting connected to the filter head, between that element mounting and that end of the filter mat, and can be removed along with the filter mat from the support tube which remains connected to the filter head.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: February 19, 2002
    Assignee: Hydac Filtertechnik GmbH
    Inventors: Harald Mees, Michael Sakraschinsky
  • Patent number: 6117312
    Abstract: A filter device has a bypass valve which releases a fluid-conveying path to an outlet when a filter element becomes clogged. The bypass valve includes a closure part on which at least one closure spring acts. To adjust the spring pretension and the opening force for the closure part, an adjusting device is provided for adjusting the opening force of the closure spring. The filter device can be economically adapted without any structural modifications to very different applications in a predetermined pressure range.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: September 12, 2000
    Assignee: Hydac Filtertechnik GmbH
    Inventors: Harald Mees, Michael Sakraschinsky