Patents Assigned to Freudenberg-NOK General Partnership
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Publication number: 20250084257Abstract: A barrier coating having high temperature resistance and insulating properties includes an insulating resin, a flame retardant, and a reinforcing fiber. The insulating resin includes high-consistency silicone rubber, epoxy, or a combination of high-consistency silicone rubber and epoxy. The flame retardant includes a first flame retardant and a second flame retardant, one of the first and second flame retardants including an intumescent. The intumescent includes melamine powder, expandable graphite, or a combination of melamine powder and expandable graphite. The other flame retardant includes ammonium polyphosphate. The reinforcing fiber includes aromatic polyamide, poly-paraphenyleneterephthalamide, or a combination of aromatic polyamide and poly-paraphenyleneterephthalamide.Type: ApplicationFiled: September 12, 2023Publication date: March 13, 2025Applicant: Freudenberg-NOK General PartnershipInventors: Ursula OYER, Raymond L. SZPARAGOWSKI, Paul J. HOCHGESANG
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Publication number: 20250020211Abstract: Elastomeric compositions, and associated methods of manufacturing seals using such compositions, and methods of use, comprising an elastomeric material and lubricant material. In various embodiments, the elastomeric material comprises an FKM or HNBR elastomer. The lubricant material may be methyl hydroxy stearate, hydroxystearamide, or mixture thereof. Compositions may further comprise a conductive filler, such as conductive carbon black.Type: ApplicationFiled: July 14, 2023Publication date: January 16, 2025Applicant: Freudenberg-NOK General PartnershipInventors: Ahmad H. NAJAFABADI, Darin BATTLES, Christopher BELLER
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Patent number: 12188561Abstract: A sealing system includes an outer member having a bore and an inner member received in the bore, the inner member including an outer surface with a shoulder. A seal member includes an outer annular insert having a first diameter and an inner annular insert having a second smaller diameter. An elastomeric body includes an outer portion over-molded on the outer annular insert and an inner portion over-molded on the inner annular insert and including an inner seal member extending radially inward from the inner annular insert. The elastomeric body including a webbing connecting the outer portion to the inner portion. the elastomeric body including a plurality of ribs extending radially outward from the inner portion of the elastomeric body along an interface between the webbing and the inner portion of the elastomeric body. The inner portion of the elastomeric body is against the shoulder on the inner member.Type: GrantFiled: October 13, 2022Date of Patent: January 7, 2025Assignee: Freudenberg-NOK General PartnershipInventors: Eduardo Hernandez-Vazquez, William Aron Whaley
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Patent number: 12110920Abstract: A bearing for use between an outer member and an inner member that is movable relative to the outer member. The bearing includes a generally cylindrical plastic body having a plurality of undulations that form gradual radially inward and radially outward waves relative to a circular path.Type: GrantFiled: June 27, 2022Date of Patent: October 8, 2024Assignee: Freudenberg-NOK General PartnershipInventors: Raymond L. Szparagowski, Saikrishna Sundararaman, Simon Watling
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Patent number: 11933402Abstract: A gasket includes a plurality of compression limiters each including a plastic body having a fastener aperture extending there through and a plurality of flow holes extending there through. An elastomeric body defines a perimeter sealing body molded around the plurality of compression limiters at spaced locations around the perimeter sealing body. The elastomeric body extends through the plurality of flow holes in the plurality of compression limiters.Type: GrantFiled: January 26, 2022Date of Patent: March 19, 2024Assignee: Freudenberg-NOK General PartnershipInventors: Christopher Chin, James Grady, Michael Blake, Saikrishna Sundararaman
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Patent number: 11760933Abstract: Thermally conductive electrically insulating compositions and structures and devices comprising such materials. In various embodiments, such materials comprise liquid crystal polymer and fillers, wherein the fillers comprise boron nitride and glass fiber. In various embodiments, the liquid crystal polymer is selected from the group consisting of semi-aromatic copolyesters, copolyamides, polyester-co-amides, and mixtures thereof.Type: GrantFiled: August 26, 2021Date of Patent: September 19, 2023Assignee: Freudenberg-NOK General PartnershipInventors: Raymond L. Szparagowski, Michael Blake, Saikrishna Sundararaman
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Patent number: 11754188Abstract: A cassette seal arrangement for sealing between a shaft and a housing includes a sleeve configured to be mounted to the shaft and including a cylindrical portion and a radially extending portion extending radially outward from the cylindrical portion. A retainer cartridge includes a main retainer configured to be mounted to the housing and supporting a seal member that includes a main seal lip and an exclusionary retainer connected to the main retainer and supporting an exclusionary seal configured to engage the shaft. An electrically conductive non-woven element is disposed longitudinally between the seal member and the exclusionary seal and engages the retainer cartridge and is configured to engage the shaft.Type: GrantFiled: October 29, 2021Date of Patent: September 12, 2023Assignee: Freudenberg-NOK General PartnershipInventors: D. Anthony Manley, Darin Battles, Christopher Beller
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Publication number: 20230235821Abstract: A gasket includes a plurality of compression limiters each including a plastic body having a fastener aperture extending there through and a plurality of flow holes extending there through. An elastomeric body defines a perimeter sealing body molded around the plurality of compression limiters at spaced locations around the perimeter sealing body. The elastomeric body extends through the plurality of flow holes in the plurality of compression limiters.Type: ApplicationFiled: January 26, 2022Publication date: July 27, 2023Applicant: Freudenberg-NOK General PartnershipInventors: Christopher CHIN, James GRADY, Michael BLAKE, Saikrishna SUNDARARAMAN
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Publication number: 20230063020Abstract: Thermally conductive electrically insulating compositions and structures and devices comprising such materials. In various embodiments, such materials comprise liquid crystal polymer and fillers, wherein the fillers comprise boron nitride and glass fiber. In various embodiments, the liquid crystal polymer is selected from the group consisting of semi-aromatic copolyesters, copolyamides, polyester-co-amides, and mixtures thereof.Type: ApplicationFiled: August 26, 2021Publication date: March 2, 2023Applicant: Freudenberg-NOK General PartnershipInventors: Raymond L. SZPARAGOWSKI, Michael BLAKE, Saikrishna SUNDARARAMAN
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Patent number: 11359724Abstract: A sealing assembly including a housing including a bore and a shaft rotatably disposed in the bore. A primary radial shaft seal is secured to the housing and includes a sealing lip engaging the shaft. A buffer seal made of an electrically conductive non-woven fabric which is arranged adjacent to the primary radial shaft seal and in contact with the housing and the shaft. A secondary contaminant exclusion seal is secured to the housing and includes at least one dust lip. The buffer seal is sandwiched between the primary radial shaft seal and the secondary contaminant exclusion seal.Type: GrantFiled: December 12, 2019Date of Patent: June 14, 2022Assignee: Freudenberg-NOK General PartnershipInventor: Richard Wagner
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Patent number: 11255382Abstract: A seal assembly includes a housing defining a bore and a shaft received in the bore. A seal member is secured to the housing for sealing a gap between the housing and the shaft. A slinger is secured to the shaft. The slinger being made from plastic and including a first semi-circular part and a second semi-circular part that is secured to the first semi-circular part. The slinger includes a radially extending wall portion with a raised bumper feature at a radially outer surface opposing the seal member. The slinger further includes an axially protruding labyrinth feature extending from the radially extending wall portion and toward the seal member. The first semi-circular part and the second semi-circular part can be snap fit to one another.Type: GrantFiled: March 8, 2020Date of Patent: February 22, 2022Assignee: FREUDENBERG-NOK GENERAL PARTNERSHIPInventor: Kah Fei Neoh
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Publication number: 20220006136Abstract: An integrated battery unit includes a battery cell and a graphite matrix surrounding the battery cell, wherein the graphite matrix is soaked with a phase change material. Each of the integrated battery units include an integrated circuit board that manages charging and discharging of the battery cell based upon data received from adjacent integrated battery units and a communication from the sources external to the battery pack. A hybrid battery unit can also include a capacitor function that temporarily stores and discharges electric charge and can be controlled by the integrated circuit board.Type: ApplicationFiled: December 2, 2019Publication date: January 6, 2022Applicant: Freudenberg-NOK General PartnershipInventor: Alexander BERDICHEVSKY
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Patent number: 11125336Abstract: A sealing system includes a housing defining a bore having an internal surface. A rotatable shaft is rotatably disposed in the bore and includes an annular groove disposed in an exterior surface of the rotatable shaft. The annular groove includes a groove bottom and a pair of lateral sidewalls. A seal is formed as a cylindrical annular thermoplastic body having an axial length greater than an axial length of the annular groove and which is bent into a V-shaped cross-section and received in the annular groove so that opposite ends of the seal are disposed in opposite bottom corners of the annular groove. A peak portion of the V-shaped cross section extends radially outward of the annular groove and is engaged with the internal surface of the bore.Type: GrantFiled: June 17, 2019Date of Patent: September 21, 2021Assignee: Freudenberg-NOK General PartnershipInventor: Raymond L. Szparagowski
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Patent number: 11123852Abstract: A two-piece pinion shaft tool for disassembling a two-piece pinion shaft from a rack and pinion housing includes a tool body having an axial opening extending along an axis of the tool body and a transverse opening at least partially communicating with the axial opening. The tool body includes internal threads within the axial opening. A pin is inserted in the transverse opening for engaging a keyway in a first shaft portion of the two-piece pinion shaft. A slide hammer includes a slide portion having external threads engaged with the internal threads of the tool body and a hammer portion disposed on the slide portion. The tool body further includes a first end with a first plurality of fingers extending axially from the tool body and includes a second end with a second plurality of fingers extending axially from the tool body.Type: GrantFiled: August 8, 2019Date of Patent: September 21, 2021Assignee: Freudenberg-NOK General PartnershipInventor: Roger Lee Barnett, Jr.
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Patent number: 11028954Abstract: A diaphragm and a bladder for an accumulator each include a thermoplastic film formed in a dome or bulbous shape. A metallic vapor deposition layer is disposed on at least one side of the thermoplastic. Inner and outer rubber layers are adhered on opposite sides of the metallic coated film so that the metallized thermoplastic film provides a barrier film to effectively slow the permeation of a gas such as nitrogen through the diaphragm or bladder.Type: GrantFiled: June 20, 2019Date of Patent: June 8, 2021Assignee: Freudenberg-NOK General PartnershipInventors: Joe Walker, Paul J. Hochgesang, Nate Tuckerman
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Patent number: 10955006Abstract: A sealing arrangement includes a housing including a bore and a shaft extending through the bore in the housing. An inner annular sealing member includes an inner surface press fit on the shaft and having a plurality of radially outwardly projecting fins on an outer surface. An outer annular sealing member is press fit in the bore and includes a first end supporting a seal lip that sealingly engages an outer surface of the inner annular sealing member. The outer annular sealing member includes a second end that is disposed directly radially outward of and spaced from the radially outwardly projecting fins of the inner annular sealing member. When the shaft rotates, the radially outwardly projecting fins pro-actively/dynamically move air, contamination, particles, fluids etc. axially away from the sealing area.Type: GrantFiled: May 30, 2018Date of Patent: March 23, 2021Assignee: Freudenberg-NOK General PartnershipInventor: Robert P. Laplante
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Patent number: 10941829Abstract: A damper system includes a cylinder wall defining a cylindrical chamber and having an open end having an annular recess. A piston is reciprocatingly disposed in the cylinder and is connected to a piston rod that extends out of the open end of the cylinder. An annular wiper seal is mounted in the annular recess of the cylinder and engages the piston rod. The annular wiper seal is made from a thermoplastic material. The annular wiper seal has an S-shaped cross section with a wiper lip having a lip edge that engages the piston rod, wherein the wiper lip has a substantially constant thickness along a majority of its length from the lip edge to the second radially inwardly extending portion.Type: GrantFiled: June 29, 2018Date of Patent: March 9, 2021Assignee: Freudenberg-NOK General PartnershipInventor: Gonzalo Barillas
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Patent number: 10907689Abstract: A sealing arrangement includes a stationary spindle and a wheel hub rotatably mounted to the spindle. A seal assembly is disposed between the spindle and the wheel hub and includes an outer carrier case having a first cylindrical portion disposed in the inner bore of the wheel hub and a first radial portion extending radially inward from an end of the first cylindrical portion. An inner seal element has an inner metal case having cylindrical portion received on an outer surface of the stationary spindle and includes an annular portion extending radially outwardly from an end of the cylindrical portion and axially spaced from the first radial portion of the outer carrier case. An oil seal lip extends radially outwardly and axially from the annular portion of the inner metal case and engages the first radial portion of the outer carrier case.Type: GrantFiled: June 21, 2018Date of Patent: February 2, 2021Assignee: FREUDENBERG-NOK GENERAL PARTNERSHIPInventor: Keith Clark
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Patent number: 10788150Abstract: A tube seal includes a cylindrical tube and an elastomeric seal body molded to the cylindrical tube. The elastomeric seal body includes a pair of seal lip regions extending from opposite ends of the rigid cylindrical tube and inserted into a respective bore of a pair of opposing members for providing a sealing relationship there between. The seal lip regions each include, in an unassembled condition, an axially extending seal lip and a radially outwardly extending seal lip connected to the ends of the rigid cylindrical tube by an elastomeric hinge region.Type: GrantFiled: March 22, 2018Date of Patent: September 29, 2020Assignee: Freudenberg-NOK General PartnershipInventors: Adam K. Parsley, Zachary A. Schultz
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Patent number: 10774876Abstract: A thrust washer includes an annular body with an aperture therein and having a first axial face and a second axial face, an outer diameter edge and an inner diameter edge extending between the first and second axial faces. At least one of the first and second axial faces includes a plurality of recessed grooves extending at least partially between the inner edge and the outer edge and defining un-recessed lands between the recessed grooves. The plurality of recessed grooves include a transition region transitioning to the lands and a scoop region separated from the transition region by a stepped wall portion extending between the scoop region and the tapered region. The recessed grooves can include directional symmetric bi-directional grooves for use in systems with rotation in both directions.Type: GrantFiled: April 25, 2019Date of Patent: September 15, 2020Assignee: Freudenberg-NOK General PartnershipInventors: Saikrishna Sundararaman, Raymond L. Szparagowski, Raymond P. Hartzell