Patents Assigned to Freudenberg
  • Arrangement with a radial shaft seal having a sinusoidally curved sealing edge
    Patent number: 9482344
    Abstract: An arrangement includes a radial shaft seal (2) that surrounds a shaft (1), wherein an elastomer body (4) forms a sealing lip (5) for bearing against the shaft (1), wherein the sealing lip (5) has a sinusoidally curved sealing edge (6) on its side which faces the shaft (1), which sealing edge runs around along the inner circumference of the sealing lip (5), and wherein the sealing edge (6) bears against the circumferential face (7) of the shaft (1). The radial shaft seal as a single component is able to produce high dynamic seal tightness in a plurality of different applications.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: November 1, 2016
    Assignee: CARL FREUDENBERG KG
    Inventors: Holger Sattler, Erich Prem
  • Integrally molded gasket for a fuel cell assembly
    Patent number: 9484581
    Abstract: A fuel cell membrane electrode assembly (MEA) comprising first and second gas diffusion layers and an ion exchange membrane disposed between the diffusion layers. Each diffusion layer includes an inner surface facing the membrane, an outer surface opposite the inner surface, and a side surface defining a perimeter of the diffusion layers. An outboard region extends about the diffusion layers at the perimeter. The outboard region surrounds an inboard region. The outboard region has a low density region proximate to the side surface and a high density region between the low density region and the inboard portion. A seal is mounted at the low density region. The high density region prevents portions of the seal from entering the inboard region thereby damaging the MEA. The seal includes a first rim having a smaller radius than a second rim.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: November 1, 2016
    Assignee: FREUDENBERG-NOK GENERAL PARTNERSHIP
    Inventor: Mark A. Belchuk
  • Slide ring seal
    Patent number: 9476506
    Abstract: A slide ring seal has a slide ring, supported such that the slide ring is axially movable, and a counter ring. The slide ring and the counter ring have respective sealing surfaces contacting one another. The slide ring sealing surface faces the counter ring sealing surface. The slide ring is pressed against the counter ring by a bellows-like spring element. The slide ring seal may be designed so the slide ring seal has an especially flexible slide ring and/or counter ring after economical and trouble-free production, the slide ring seal has at least one sealing surface with elevations or unevenness of a magnitude from 0.1 ?m to W mm, W conforms to the formula W=0.03 Dm/s, wherein the average diameter Dm is the average of the circular-ring-shaped sealing surface's outside (Da) and inside (Di) diameter, and s is the slide ring or counter ring thickness.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: October 25, 2016
    Assignee: CARL FREUDENBERG KG
    Inventors: Soeren Neuberger, Eberhard Bock, Alexander Guentert, Klaus Lang
  • Filter assembly and filtering system having the same
    Patent number: 9474995
    Abstract: Filter assemblies and filtering systems including the same are disclosed. In some embodiments the filter assemblies and systems include a diffusion member and first and second pleated parts, wherein the first and second pleated parts include different first and second peak heights h1 and h2, respectively. In some instances h1 is greater than h2, and h2 and the thickness of the diffusion member are set such that an upper surface of the diffusion member does not extend past said first upper peaks when the diffusion member is seated in a seating place defined by a seating place that is at least partly defined by the second pleated part. The filter assemblies and systems may also be configured such that an air flow filtered by said second pleated part passes through said diffusion member.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: October 25, 2016
    Assignee: CARL FREUDENBERG KG
    Inventors: Kyungho Hwang, Sunguk Cho
  • High-strength lightweight non-woven fabric made of spunbonded non-woven, method for the production thereof and use thereof
    Patent number: 9458558
    Abstract: The invention relates to a high-strength light-weight non-woven fabric made of spunbonded non-woven, particularly for use as a reinforcement or strengthening material, comprising at least one ply of melt-spun synthetic filaments, which are bonded by means of high-energy water jets, characterized in that it includes a thermally activatable binding agent, which is applied onto the ply of melt-spun filaments in the form of at least one thin layer. The invention further relates to a method for producing such a non-woven fabric.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: October 4, 2016
    Assignee: CARL FREUDENBERG KG
    Inventors: Ivo Ruzek, Ararad Emirze
  • Mop
    Patent number: 9427130
    Abstract: A mop comprising a mop head (1) that has at least one cleaning strip (2) is disclosed. The cleaning strip (2) comprises at least one cleaning surface (5) on which raised cleaning islands (6) made of flock fibers are arranged. The cleaning strip (2) is attached to the mop head (1) at one of its ends (3) and has a free end (4). The raised cleaning islands (6) on the at least one cleaning surface (5) of the cleaning strip (2) are arranged at certain distances (7) from each other and are surrounded on all sides by storage spaces (8) for holding dirt. The size of the storage spaces (8) steadily decreases from the end (3) of the cleaning surface (5) facing the mop head (1) in the mopping direction (9) of the free end (4).
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: August 30, 2016
    Assignee: Carl Freudenberg KG
    Inventors: Karl-Ludwig Gibis, Norbert Weis, Dieter Philipp, Lars Schmitt
  • Reduced inertia valve stem seal flange
    Patent number: 9416690
    Abstract: A valve stem seal including a radially outwardly extending flange that includes one or more circumferential grooves to allow the flange to flex and lay flat against a support surface and protect the flange from fatigue.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: August 16, 2016
    Assignee: FREUDENBERG-NOK GENERAL PARTNERSHIP
    Inventors: John A. London, Patrick L. Scheib
  • Sealing frame for use in a battery
    Patent number: 9401503
    Abstract: A battery includes at least two sealing frames and at least one cell. The sealing frames include a base body defining an opening wherein the base body includes a first sealing surface embodied to be elastically compressible and positioned against opposite sides of a tapered area of the at least one cell.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: July 26, 2016
    Assignee: Carl Freudenberg KG
    Inventors: Peter Kritzer, Thomas Kramer, Helmut Zischka
  • BIORESORBABLE WOUND DRESSING
    Publication number: 20160199530
    Abstract: The present invention is directed to novel non-woven fabrics containing growth and differentiation factor proteins. Said fabrics are specifically designed to accelerate tissue regeneration and wound healing processes of mammalian tissues. Furthermore, the invention provides wound dressings, pads or implants comprising the novel non-woven fabrics.
    Type: Application
    Filed: January 15, 2016
    Publication date: July 14, 2016
    Applicants: BIOPHARM GESELLSCHAFT ZUR BIOTECHNOLOGISCHEN ENTWICKLUNG VON PHARMAKA MBH, CARL FREUDENBERG KG
    Inventors: Frank Plöger, Denis Reibel, Dirk Grafahrend, Daniel Neumüller
  • Plug-in piece
    Patent number: 9388921
    Abstract: A plug-in piece 1 for sealing connection of two mutually assigned cylindrical surfaces includes an essentially tubular support body 2, which on its ends exhibits annularly encircling sealing elements, which can be made to engage to produce a sealing connection with the cylindrical surfaces to be sealed, wherein at least one of the sealing elements is configured as an annularly encircling sealing bead 3, 30 on the outer surface of the support body 2, with a spherically curved sealing surface. Provision is made that the spherical radius of the sealing surface (3, 30) is chosen so that the center of the sphere is roughly at the axis of support body (2) symmetry. Thus, the compression forces are ensured to remain largely constant, independent of the angular setting over the entire surface of the sealing bead.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: July 12, 2016
    Assignee: Carl Freudenberg KG
    Inventors: Hans Unger, Ralf Heldmann, Ingo Stephan, Markus Clemens, Carsten Hartmann, Ernst Jakob, Stephan Reddig
  • Gasket, in particular for a pressurised liquid
    Patent number: 9388904
    Abstract: A gasket, in particular for a pressurized liquid, includes: a support ring (2) having an axial flange (3) and a radial flange (4); and a PTFE washer (5) arranged on the ring (2), the washer at least partially covering the outer face (3?) of the axial flange (3) and forming a flexible inner sealing lip (6) intended to be applied against an element to be sealed, such as a shaft. The sealing lip (6) includes an annular portion bearing mostly on the element to be sealed and a curved annular connecting portion. The sealing lip (6) has a small thickness (EL), typically less than 0.8 mm, and, in the absence of stress, substantially forms a frustoconical ring or sleeve having a vertex angle of between 40° and 80°.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: July 12, 2016
    Assignee: CARL FREUDENBERG KG
    Inventors: Thierry Girardot, Dominique Lutaud, Arnaud Soudet
  • Seal for a disk valve
    Patent number: 9383022
    Abstract: The invention relates to a seal on a disk valve, in which a sealing collar consisting of elastomeric material is used for both the static flange seals and the dynamic seals on the valve disk and on the switching pin, the sealing function of the static flange seals (14) being separate from the sealing function of the dynamic disk seal.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: July 5, 2016
    Assignee: Carl Freudenberg KG
    Inventors: Frank Lauer, Thomas Kramer
  • TORSION WRINGER
    Publication number: 20160183760
    Abstract: A torsion wringer has a receiving device for receiving the head of a mop, the receiving device having an upper part and a lower part which can be interconnected by elements. The design and to development of the torsion wringer can provide a mop that can be freed from liquid in a problem-free manner. The torsion wringer has elements designed in such a manner and/or are articulated on the parts of the container such that the parts can be rotated with respect to each other.
    Type: Application
    Filed: July 2, 2014
    Publication date: June 30, 2016
    Applicant: Carl Freudenberg KG
    Inventors: Norbert Weis, Uwe Dingert, Johannes Hohenhaus, Reiner Wallbaum
  • Broom head
    Patent number: 9375076
    Abstract: In respect of the problem of indicating a broom head (1) which can be produced such that its individual parts are easy to store, wherein the individual parts are fixed to one another following production of the broom head, said broom head (1) comprising a basic body (2) with a plate (3), from which project first cleaning elements (4) for directing towards a surface which is to be cleaned, wherein the plate (3) also has second cleaning elements (5), which assist the cleaning performance of the first cleaning elements (4), projecting from it, is characterized in that the second cleaning elements (5) are arranged on a module (6) which can be introduced, as a separate individual part, into an aperture (9) of the plate (3) such that the second cleaning elements (5) engage through the plate (3).
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: June 28, 2016
    Assignee: Carl Freudenberg KG
    Inventors: Norbert Weis, Hans-Jörg Clemen, Marc Hunger
  • Drive system for a cleaning unit, and cleaning unit
    Patent number: 9364129
    Abstract: The invention relates to a drive system (1) for driving an automatic cleaning unit, comprising: —a carrier unit (7, 10); —a drive motor (2), which is fastened on the carrier unit (7, 10); —a driveshaft (4), which is arranged in a rotatable manner on the carrier unit (7, 10) and can be driven by the drive motor (2); —an advancement device (15), which is arranged on the driveshaft (4) and can be rotated about the driveshaft, wherein the advancement device (15) is coupled to the driveshaft (4) in order to generate advancement transversely to the extent of the driveshaft (4) and in order, when advancement is stopped, to cause the advancement device (15) to rotate in relation to the carrier unit.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: June 14, 2016
    Assignee: Carl Freudenberg KG
    Inventors: Norbert Weis, Johannes Flath, Karl-Ludwig Gibis
  • Floor cleaner
    Patent number: D764128
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: August 16, 2016
    Assignee: Carl Freudenberg KG
    Inventor: Simon Kindler
  • Floor cleaner
    Patent number: D764129
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: August 16, 2016
    Assignee: Carl Freudenberg KG
    Inventor: Simon Kindler
  • Broom head
    Patent number: D764131
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: August 16, 2016
    Assignee: Freudenberg Household Products LP
    Inventors: Joseph Seifts, Balaji Kandasamy
  • Broom block
    Patent number: D764733
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: August 23, 2016
    Assignee: Freudenberg Household Products LP
    Inventors: Balaji Kandasamy, Joseph Seifts
  • Mop
    Patent number: D770119
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: October 25, 2016
    Assignee: Carl Freudenberg KG
    Inventor: Diana Troger