Patents Assigned to Freudenberg
  • Method for the production of a sealing ring
    Patent number: 9816615
    Abstract: A method for producing a sealing ring comprises cutting a sheet-metal strip to a length of a ring circumference using laser cutting; forming the sheet-metal strip into a ring shape having first and second mutually contacting edge surfaces; and joining the first and second mutually contacting edges using laser welding so as to form a substance-to-substance bond.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: November 14, 2017
    Assignee: CARL FREUDENBERG KG
    Inventor: Hermann Stahl
  • Elastomeric body for vibration damping
    Patent number: 9803092
    Abstract: An elastomeric body for vibration damping and/or suspension, has a base body and a flame-retarding coating which covers at least one section of the base body, wherein the flame-retarding coating has at least two intumescent fire protection systems and the first fire protection system contains expandable graphite which comprises at least a first fraction with an average grain size of more than 180 ?m and at least a second fraction with an average grain size of less than 180 ?m, and the second fire protection system forms a support structure in the expanded state, which structure at least partially fixes the expanded graphite in the expanded state.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: October 31, 2017
    Assignee: CARL FREUDENBERG KG
    Inventors: Michael Gutsch, Martin Heber, Bjoern Hellbach, Daniela Beyer, Thomas Schnetz
  • Expandable introducer sheath
    Patent number: 9801657
    Abstract: An expandable introducer sheath for use in inserting a medical device into a body vessel of a patient includes a body which extends from a proximal end to a distal end along an axis. The body includes an inner layer, an outer layer, and an expandable reinforcement member which is disposed between said inner and outer layers. The expandable reinforcement member is configured to radially expand as the medical device is axially advanced or retracted through said introducer sheath. Once the medical device has exited the introducer sheath, the expandable reinforcement member facilitates a return of the introducer sheath to its original or unexpanded condition.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: October 31, 2017
    Assignee: FREUDENBERG MEDICAL, LLC
    Inventors: Simon Furnish, Anthony Appling
  • Bearing
    Patent number: 9797445
    Abstract: A bearing with a core and a sheath which surrounds the core, wherein the core is supported against the sheath by at least one elastomer or a plurality of elastomers, wherein at least two functional chambers which contain a working fluid are formed between the core and the sheath, and wherein the functional chambers are bounded at least partially by the elastomer or elastomers, characterized, with respect to the problem of configuring a bearing in such a way that a drop in rigidity of the bearing is as small as possible at low temperatures, in that at least one equalizing chamber is provided for an equalizing fluid, from which the equalizing fluid can be diverted into the functional chambers, wherein the equalizing fluid in the equalizing chamber is separated from a gas-filled space or a plurality of gas-filled spaces by a movable or elastic separating element.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: October 24, 2017
    Assignee: CARL FREUDENBERG KG
    Inventor: Detlef Cordts
  • Bioresorbable wound dressing
    Patent number: 9782511
    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: Grant
    Filed: January 15, 2016
    Date of Patent: October 10, 2017
    Assignees: Biopharm Gesellschaft Zur Biotechnologischen Entwicklung von Pharmaka MBH, Carl Freudenberg KG
    Inventors: Frank Plöger, Denis Reibel, Dirk Grafahrend, Daniel Neumüller
  • Rotary coupling
    Patent number: 9777874
    Abstract: A rotary coupling includes an annular outer section which has a female end, a threaded portion, and a Z-ring relief. A connector pipe has a connection end, a shoulder, and a seal end. A Z-ring is housed within the Z-ring relief and packing seals are housed within a packing chamber; and a retainer ring is threadably received into the threaded portion of the outer section. The retainer ring receives compression screws there-through, wherein in the engaged position the compression screws urge a packing end of the Z-ring longitudinally against packing seals thereby compressing the packing seals into the packing chamber creating a seal. The compression screws are movable between an engaged and disengaged position in order that in the disengaged position the compression pressure against the Z-ring and packing seals is released by backing off the compression screws without disassembly of the rotary coupling.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: October 3, 2017
    Assignee: Freudenberg Oil & Gas, LLC
    Inventors: Steven Williams, Anton Marincic, Zvonko Milanovic
  • Mop cover
    Patent number: 9770154
    Abstract: A mop cover for cleaning surfaces, having a main body, configured and modified in such a way that the mop cover has an abrasive surface by which hairs and particles of dirt can be reliably picked up, wherein flock material is assigned to the main body, the flock material being disposed on a surface which can face a floor surface to be cleaned.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: September 26, 2017
    Assignee: CARL FREUDENBERG KG
    Inventors: Sabine Wilmes, Karl-Ludwig Gibis, Dieter Philipp, Christian Mast, Lars Schmitt, Susanne Walter
  • Mechanical face seal with a rotating counter ring and precisely defined clamping
    Patent number: 9759331
    Abstract: A mechanical face seal includes a rotating counter ring having a sealing surface and two radial planes. Each of the radial planes is associated with a clamping cam. A stationary face seal ring has a sealing surface opposite from the sealing surface of the counter ring. The sealing surfaces of the counter ring and the face seal ring bear against each other.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: September 12, 2017
    Assignee: CARL FREUDENBERG KG
    Inventors: Martin Kirchhof, Armin Laxander, Guenther Lederer, Thomas Keller
  • Energy saving seal with rocking dust lip
    Patent number: 9759330
    Abstract: A seal includes an annular mounting portion having an axial leg extending axially from the annular mounting portion toward the air side. A radial leg portion extends radially inward from an end of the axial leg. A lay down sealing lip extends radially inward and axially toward the oil side from an end of the radial leg portion. A dust lip extends from the end of the radial leg portion in a direction opposite the lay down sealing lip. When the oil side is under negative pressure and when the lay down sealing lip begins to lift radially off the shaft, there is a counterbalance force applied to the axial leg that is designed to be flexible enough that the oil side vacuum “rocks” the seal bringing the dust lip into contact with the shaft and blocking airflow.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: September 12, 2017
    Assignee: Freudenberg-NOK General Partnership
    Inventors: Alexander Berdichevsky, Rohit Seshadri
  • Flat wiping cloth having an antimicrobial or antibacterial finish
    Patent number: 9750384
    Abstract: A flat wiping cloth for arrangement on a wiping cloth holder includes an elongated base body and an active ingredient that inhibits or suppresses the growth of bacteria or viruses. The active ingredient is allocated to the base body. The base body has at least one of fibers, yarns or fringe, which have free ends that can be oriented to face a surface to be cleaned during use. The active ingredient is distributed within a material of which the fibers, yarns or fringe is made, or is distributed in a component of the base body.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: September 5, 2017
    Assignee: Carl Freudenberg KG
    Inventors: Andreas Eisenhut, Petra Bargon, Hilmar Eichelbroenner, Thorsten Gleich, Ulla Reiman, Frédéric Petit
  • Low load offset seal
    Patent number: 9746081
    Abstract: A seal is provided for insertion in a bore in an outer member and engaging an inner member received in the bore. The seal includes an outer annular insert having a first diameter and an inner annular insert having a second diameter smaller than the first diameter. An elastomeric body includes an outer portion over-molded on the outer annular insert and an inner seal over-molded on the inner annular insert and including an intermediate web extending between the outer portion and the inner portion. The web extends both axially and radially relative to a center axis of the outer annular insert. The inner seal includes an inboard sealing surface and the outer portion including an outboard sealing surface.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: August 29, 2017
    Assignee: FREUDENBERG-NOK GENERAL PARTNERSHIP
    Inventor: John B. Wagner
  • Modular handle assembly for a steerable catheter
    Patent number: 9737688
    Abstract: A modular handle assembly for supporting and controlling a steerable catheter having at least one deflection wire includes a handle portion which extends along an axis for being secured about a portion of the steerable catheter. The modular handle assembly includes at least one barrel that is rotatably connected to the handle portion for rotation about said axis and at least one actuation screw shaft that is disposed within said handle portion and which extends through the barrel for connection with the deflection wire of the steerable catheter. At least one pinion gear is disposed radially between the actuation screw shaft and the barrel and is threadedly interconnected with the actuation screw shaft and the barrel for translating rotational movement of the barrel about the axis into axial movement of the actuation screw shaft to provide for movement of the deflection wire to curl the steerable catheter.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: August 22, 2017
    Assignee: FREUDENBERG MEDICAL, LLC
    Inventor: Greg Furnish
  • Filter element
    Patent number: 9737836
    Abstract: A filter element includes a first bellows which is produced from a first filter medium, in view of the object of providing a filter element which after some service life can be readily modified in such a manner that said filter element again achieves an adequate filtration effect, is characterized in that a second bellows which is produced from a second filter medium is provided, wherein the second bellows is inserted into a recess of the first bellows and the periphery of the second bellows is partly or completely surrounded by the first bellows or wherein the second bellows is placed onto the first bellows in such a manner that the recess is covered by the second bellows and the fold tips of the bellows are aligned with one another.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: August 22, 2017
    Assignee: CARL FREUDENBERG KG
    Inventors: Knuth Fickartz, Volker Braeunling
  • Sealing ring
    Patent number: 9719597
    Abstract: A radial shaft sealing ring for the sealing separation of an internal space (6), from an external space (5), with a sealing lip (2) delimited by a first and a second annular surface (3, 4) of a cone frustum, wherein, the first annular surface (3) is oriented towards the external space (5), and the second annular surface (4) is oriented towards the internal space (6), wherein the annular surfaces (3, 4) are connected to each other via a ring-shaped contact surface (23) of the sealing lip (2), which rests on the shaft (7), wherein the first annular surface (3) forms with the shaft (7) a first angle (??) of 23-40° in the installed position, wherein an inner diameter (24) of the ring-shaped contact surface (23) is 1-15 mm in the installed position.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: August 1, 2017
    Assignee: Carl Freudenberg KG
    Inventors: Rolf Drucktenhengst, Udo Eping
  • Energy saving self-contact seal with pushing bead
    Patent number: 9714710
    Abstract: An energy saving seal seals between a bore and a shaft for separating an oil side from an air side of the seal. The seal includes an annular mounting portion having a bellows portion extending axially and radially inward from the mounting portion. An axial leg extends axially from the bellows portion toward the air side. A lay down sealing lip extends radially inward and axially toward the oil side from an end of the axial leg. The sealing lip includes a bead on an outer surface. A dust lip extends from the end of the axial leg in a direction opposite the lay down sealing lip. When the oil side is under a negative pressure, the axial leg flexes inward in response to the negative pressure and engages the bead to provide a self-contact feature that holds the lay down sealing lip in engagement with the shaft.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: July 25, 2017
    Assignee: FREUDENBERG-NOK GENERAL PARTNERSHIP
    Inventors: Neoh Kah Fei, Muhammad Mujahid Azni, Alexander Berdichevsky
  • Modular handle assembly for a steerable catheter
    Patent number: 9700699
    Abstract: A modular handle assembly for supporting and controlling a steerable catheter having at least one deflection wires includes a handle extending along an axis for being secured about a portion of the steerable catheter. The modular handle assembly includes at least one barrel rotatably connected to the handle for rotation about the axis, and at least one spindle disposed in and connected with said barrel for rotation about the axis with the barrel. At least one guide cable extends from an anchored end being anchored to the spindle to a distant end for connection with one of the deflection wires of the steerable catheter. The guide cable is wrapped about the spindle for axially moving the deflection wires in response to rotation of the first spindle about the axis by the barrel to curl the distal tip of the elongated body of the steerable catheter.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: July 11, 2017
    Assignee: FREUDENBERG MEDICAL, LLC
    Inventors: Ben Morris, Brian Keith Wells, Adwait Kumar, Anthony Appling
  • U-joint seal
    Patent number: 9695881
    Abstract: A universal joint includes a trunnion including an annular recess in an outer surface. A bearing cup is disposed on the trunnion and includes an inner diameter surface having a retention recess therein. A needle bearing assembly is disposed between an outer surface of the trunnion and the inner diameter surface of the bearing cup. A seal assembly is disposed at an open end of the bearing cup and includes a seal support insert including a radially outwardly protruding retention member engaged with the retention recess of the bearing cup. An elastomeric seal is molded to the seal support insert and includes a plurality of radially inwardly extending seal lips engaging the outer surface of the trunnion and a dust lip extending axially from the seal support insert and including a dust lip retention feature received in an annular recess of the trunnion.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: July 4, 2017
    Assignee: FREUDENBERG-NOK GENERAL PARTNERSHIP
    Inventor: David Garner
  • Energy saving seal with vacuum induced counter-balance and rocking feature
    Patent number: 9695937
    Abstract: A seal includes an annular mounting portion having a bellows portion extending axially and radially inward from the mounting portion. An axial leg extends axially from the bellows portion. A lay down sealing lip extends radially inward and axially from an end of the axial leg. A dust lip extends from the end of the axial leg in a direction opposite the lay down sealing lip. When the oil side is under negative pressure and when the lay down sealing lip begins to lift radially off the shaft there is a counterbalance force applied to the axial leg through the bellows geometry which maintains the lay down sealing lip in contact with the shaft. In addition, the seal is designed to be flexible enough that the oil side vacuum “rocks” the seal bringing the dust lip into contact with the shaft and blocking airflow.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: July 4, 2017
    Assignee: Freudenberg-NOK General Partnership
    Inventors: Alexander Berdichevsky, Muhammad Mujahid Azni
  • Bucket
    Patent number: D789638
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: June 13, 2017
    Assignee: CARL FREUDENBERG KG
    Inventor: Markus Rueckheim
  • Torsion wringer
    Patent number: D789640
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: June 13, 2017
    Assignee: CARL FREUDENBERG KG
    Inventor: Markus Rueckheim