Patents Assigned to NOK
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Patent number: 10801526Abstract: A sealing device includes: an annular seal that is disposed on an outer periphery of a rod of a hydraulic cylinder further on a side of an extending direction than a cylinder head of the hydraulic cylinder and that has a pair of opposing first facing surfaces; a holding member disposed on an outer periphery of the seal; and a fixing member disposed on an outer periphery of the holding member, the fixing member having a tapered inner surface that contacts an outer surface of the holding member and that has an inner diameter increasing toward a retracting direction.Type: GrantFiled: January 17, 2019Date of Patent: October 13, 2020Assignees: KOMATSU LTD., NOK CORPORATIONInventors: Yoshio Hoshino, Hisatoshi Odaka, Kenichi Ajiki, Takafumi Nakamura, Yoshiyuki Abe
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Publication number: 20200316582Abstract: A liquid injection attachment is provided that includes an attachment body having an insertion opening into which a liquid injecting implement is inserted and a liquid flow outlet; a gasket mounting portion formed on the periphery on the front end side of the attachment body; and a gasket mounted to the gasket mounting portion and brought into close contact with the peripheral portion of the liquid flow outlet, wherein the gasket mounting portion has an engaging recess and/or engaging protrusions, the gasket has an engaging protrusion 19 and/or engaging recesses, and the engagement direction thereof is in a direction toward a central axis of the attachment body.Type: ApplicationFiled: May 11, 2017Publication date: October 8, 2020Applicant: NOK CORPORATIONInventors: Ryo FUTASHIMA, Hiroshi UMEBAYASHI, Toru UDA
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Patent number: 10793706Abstract: A fluororubber composition comprising 10 to 50 parts by weight of wollastonite and 0.5 to 10 parts by weight of organic peroxide based on 100 parts by weight of peroxide-crosslinkable fluororubber, the wollastonite being needle-like or fibrous wollastonite having an average fiber diameter of 5 ?m or less and an average fiber length of 40 to 80 ?m, and the wollastonite being surface-treated with an amino silane coupling agent or an epoxy silane coupling agent. The fluororubber composition that can be suitably used as, for example, a molding material for normal/reverse rotation oil seals that allow continuous excellent sealing of fluid in the operation of normal and reverse rotation.Type: GrantFiled: November 25, 2016Date of Patent: October 6, 2020Assignee: NOK CORPORATIONInventor: Tomonori Furukawa
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Patent number: 10794428Abstract: There are provided a sealing device and a hub bearing that can reduce torque. Pear-skin-like projections and depressions are provided on each of a sliding surface in a lip for foreign object (a side lip 121a and a middle lip 121b) and a sliding surface in a lip for grease 122. Roughness of the pear-skin-like projections and depressions provided on the sliding surface of the lip for grease 122 is larger than roughness of the pear-skin-like projections and depressions provided on the sliding surface of the lip for foreign object.Type: GrantFiled: November 24, 2017Date of Patent: October 6, 2020Assignee: NOK CORPORATIONInventors: Yuichi Shuto, Kei Sasaki, Shohei Yamane, Yuichi Tarukawa, Takuya Kato
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Patent number: 10794488Abstract: A sealing device for sealing between a valve body which is movably disposed in a valve box and which controls the flow of a fluid, and a tube which is connected to the valve box or is a part of the valve box and through which the fluid flows, is provided. The sealing device includes: a first seal portion which is a resin annular plate or film and is to be closely contacted with the outer surface of the valve body; and a cylindrical second seal portion which is formed from a material more flexible than that of the first seal portion, contacts the inner outer surface of the tube, and prevents the fluid from leaking from the tube. The first seal portion and the second seal portion are integrally joined. A flange joined to the first seal portion is formed on an edge of the second seal portion.Type: GrantFiled: September 27, 2017Date of Patent: October 6, 2020Assignee: NOK CORPORATIONInventor: Masaaki Yagi
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Patent number: 10798087Abstract: A system, apparatus, method, and machine readable medium are described for implementing a composite authenticator. For example, an apparatus in accordance with one embodiment comprises: an authenticator for authenticating a user of the apparatus with a relying party, the authenticator comprising a plurality of authentication components; and component authentication logic to attest to the model and/or integrity of at least one authentication component to one or more of the other authentication components prior to allowing the authentication components to form the authenticator.Type: GrantFiled: January 26, 2018Date of Patent: October 6, 2020Assignee: Nok Nok Labs, Inc.Inventors: Rolf Lindemann, Davit Baghdasaryan
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Publication number: 20200305746Abstract: An object of the present invention is to provide a bioelectrode, which can stably measure biological information and is suitable for repeated use, and a method of manufacturing the bioelectrode. This object is solved by a bioelectrode comprising a silver coating layer provided on a conductive silicone rubber electrode, wherein the conductive silicone rubber electrode is composed of a silicone rubber containing conductive carbon particles, the silver coating layer is composed of silicone rubber and at least one of agglomerated silver powder and flake-like silver powder, and the silver coating layer has a thickness of 18 ?m to 80 ?m, and, preferably, in which the silver powder contains both the agglomerated silver powder and the flake-like silver powder.Type: ApplicationFiled: July 5, 2017Publication date: October 1, 2020Applicant: NOK CORPORATIONInventors: Ryo FUTASHIMA, Yasushi SUGIYAMA, Toru UDA
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Patent number: 10788129Abstract: A sealing device that is applicable to high-speed rotation applications and has an increased pressure resistance is provided. The sealing device includes: a first side discharge valve located on a first side, on which a fluid is to be sealed, of an outer circumferential sealing surface, the first side discharge valve extending radially outward toward the first side for allowing a gas in a space between an inner circumferential surface of a housing and an outer circumferential sealing surface to be discharged toward the first side while blocking a gas from entering the space from the first side; and a second side discharge valve located on an atmosphere side that is opposite to the first side with respect to the outer circumferential sealing surface, the second side discharge valve extending radially outward toward the atmosphere side for allowing the gas in the space to be discharged toward the atmosphere side while blocking a gas from entering the space from the atmosphere side.Type: GrantFiled: July 17, 2018Date of Patent: September 29, 2020Assignee: NOK CORPORATIONInventor: Kazunori Jinbo
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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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Publication number: 20200300370Abstract: The seal ring is annular around an axis x and includes an annular outer peripheral surface facing an outer periphery side, and a plurality of recessed parts. The recessed parts are formed in such a way as to be spaced apart from each other in a circumferential direction and are recessed from the outer peripheral surface toward an inner periphery side. The recessed parts expand, in the axis x direction, from one side surface to a position which does not reach another side surface. The outer peripheral surface includes a annular contact surface between the another side surface and the position, and rib surfaces respectively between mutually neighboring recessed parts in the circumferential direction. Each of the rib surfaces extends between the one side surface and the position in the axis x direction.Type: ApplicationFiled: June 9, 2020Publication date: September 24, 2020Applicant: NOK CORPORATIONInventors: Yusuke YOSHIDA, Koji WATANABE
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Publication number: 20200298186Abstract: The obtained hollow fiber membrane has high water permeability, and has, when used as a humidifying membrane, a linear relationship between supply humidity and humidification amount. Therefore, the hollow fiber membrane is effectively used, for example, as a humidifying membrane for fuel cells. The method for producing a polyphenylsulfone hollow fiber membrane according to present invention can provide a humidifying membrane that suppresses segregation and crosslinking of hydrophilic polymers associated with the operation of the humidifying membrane, and that prevents the deterioration of humidification performance due to the operation. In addition, the producing method of the present invention can produce a polyphenylsulfone hollow fiber membrane for humidifying membranes, wherein the hollow fiber membrane has high water permeability, and has, when used as a crosslinked humidifying membrane, a linear relationship between water vapor supply humidity and humidification amount.Type: ApplicationFiled: September 20, 2018Publication date: September 24, 2020Applicant: NOK CORPORATIONInventors: Kensuke WATANABE, Takatoshi SATO
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Patent number: 10780610Abstract: Provided is a structure in which an inserted article is easily inserted and a product is easily released from a die after molding. The structure includes a positioning mechanism which is vertically arranged on one split die, includes a positioning pin having a tapered distal end, and positions the inserted article by engaging the inserted article with the positioning pin, a stop mechanism that has a spring means assembled with the one split die and a stopper portion held by the spring means, and temporarily stops movement of the other split die when the other split die comes into contact with the stopper portion at the time of mold clamping, and a pressing mechanism that has a spring assembled with the other split die, a pusher pin, a spring assembled with the one split die, and a pusher pin, and elastically presses the inserted article by the pusher pin.Type: GrantFiled: May 11, 2015Date of Patent: September 22, 2020Assignee: NOK CORPORATIONInventors: Takeshi Masaka, Shigeru Watanabe
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Patent number: 10781321Abstract: A coating agent for oil seal comprising 10 to 160 parts by weight of a filler having a particle size of 0.5 to 30 ?m based on 100 parts by weight of isocyanate group-containing 1,2-polybutadiene and being prepared as an organic solvent solution, wherein a contact angle between a substrate surface coated with the coating agent and engine oil is less than 35°. The coating agent can improve wettability with oil and reduce dynamic friction coefficient in oil, while increasing the roughness of the coating surface. Thus, low torque characteristics can be achieved, while maintaining excellent seal performance inherent in oil seal.Type: GrantFiled: February 10, 2016Date of Patent: September 22, 2020Assignee: NOK CORPORATIONInventors: Natsumi Kimura, Katsumi Abe
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Publication number: 20200292081Abstract: A sealing device includes: a housing; a seal ring configured to be axially displaceably inserted along an inner circumference of the housing, the seal ring including a front-end surface and a rear-end surface which defines packing mounting space; a packing configured to establish sealing between the housing and the seal ring, the packing being disposed in the packing mounting space; and spring means disposed on the rear-end surface side of the seal ring to elastically bias the seal ring toward the front-end surface side.Type: ApplicationFiled: January 16, 2019Publication date: September 17, 2020Applicant: NOK CORPORATIONInventors: Kenichi NAKAYAMA, Masashi SUZUKI
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Publication number: 20200295452Abstract: A millimeter-wave radar cover housing a millimeter-wave radar including an antenna and an electronic circuit configured to drive the antenna includes: a first site provided in front of the millimeter-wave radar to protect the millimeter-wave radar and transmit millimeter waves emitted from the antenna; and a second site including a housing space in which the antenna and the electronic circuit except for the first site are housed. The first site is made of a stacked structural body obtained by stacking at least one layer of a first constituent material having a negative relative permittivity in the frequency band of the millimeter waves and a second constituent material having a positive relative permittivity in the frequency band of the millimeter waves, and the stacked structural body is curved in a convex shape in a direction centered at an emission source of the millimeter electromagnetic waves and departing from the emission source.Type: ApplicationFiled: June 4, 2020Publication date: September 17, 2020Applicant: NOK CORPORATIONInventors: Takeshi YAMADA, Kento TADA
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Publication number: 20200292080Abstract: The annular dust seal includes a circular annular dust lip, the annular dust seal being formed of an elastic material, being supported by a housing, and bringing a surface of the dust lip into contact with an outer peripheral surface of a reciprocating shaft that is disposed in the housing and includes a tip end side protruding toward an atmosphere side. In a longitudinal section of the dust lip, an average radius of curvature of a surface having a convex curvature on an inner side of the housing from a top portion of the dust lip is larger than an average radius of curvature of a surface having a convex curvature on the atmosphere side from the top portion of the dust lip.Type: ApplicationFiled: June 3, 2020Publication date: September 17, 2020Applicant: NOK CORPORATIONInventor: Wataru TOKUNAGA
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Publication number: 20200292079Abstract: A sealing apparatus includes a reinforcing ring, an elastic body portion formed of an elastic body having conductivity, and a conductive grease. The elastic body portion includes a base portion, a lip portion which extends from the base portion, and a tension force applying member which is an elastic member in an annular shape. The tension force applying member is mounted on an outer peripheral side of the lip portion at a lip tip end portion to apply a tension force which presses a lip contact end against an outer peripheral surface of a shaft. The conductive grease is applied to at least a portion of an inner peripheral surface of the elastic body portion which faces an inner periphery side.Type: ApplicationFiled: May 28, 2020Publication date: September 17, 2020Applicant: NOK CORPORATIONInventors: Takuya ITO, Masayuki TANIDA
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Publication number: 20200292082Abstract: Increase of contact pressure of lips on their contact surface can be prevented. A sealing device is configured to be interposed between exterior-side and interior-side members which rotate about a common axis relative to each other. The sealing device includes a metal ring and a lip portion. The metal ring is fitted into and fastened to an inner periphery of the exterior-side member. The lip portion is formed of a rubber-like elastic material and is fastened to the metal ring by vulcanization. The lip portion includes annular grease, side and intermediate lips. The annular grease lip extends toward a structurally interior side, and has a first end. The annular side lip extends toward an atmosphere side, and has a second end. The annular intermediate is arranged between the grease and side lips to extend toward the interior-side member, and has a third end. The first, second and third ends contact the interior-side member.Type: ApplicationFiled: June 25, 2019Publication date: September 17, 2020Applicant: NOK CORPORATIONInventor: Takuya KATO
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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
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Patent number: 10776464Abstract: A system, apparatus, method, and machine readable medium are described for adaptively implementing an authentication policy. For example, one embodiment of a method comprises: detecting a user of a client attempting to perform a current interaction with a relying party; and responsively identifying a first interaction class for the current interaction based on variables associated with the current interaction and implementing a set of one or more authentication rules associated with the first interaction class.Type: GrantFiled: March 18, 2014Date of Patent: September 15, 2020Assignee: Nok Nok Labs, Inc.Inventor: Brendon Wilson